[media] media: Links setup
Create the following ioctl and implement it at the media device level to setup links. - MEDIA_IOC_SETUP_LINK: Modify the properties of a given link The only property that can currently be modified is the ENABLED link flag to enable/disable a link. Links marked with the IMMUTABLE link flag can not be enabled or disabled. Enabling or disabling a link has effects on entities' use count. Those changes are automatically propagated through the graph. Signed-off-by:Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by:
Sakari Ailus <sakari.ailus@iki.fi> Acked-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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