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| author |   Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-08-23 09:40:26 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-01-11 12:18:54 -0200 |
| commit | 2521fdac28d0ceea659be1620fef96b1cbff09b6 (patch) | |
| tree | e507ecce63e200abfbb9853c74f9ea182b73d7d2 /include/media/media-device.h | |
| parent | [media] media-device: add pads and links to media_device (diff) | |
| download | linux-dev-2521fdac28d0ceea659be1620fef96b1cbff09b6.tar.xz linux-dev-2521fdac28d0ceea659be1620fef96b1cbff09b6.zip | |
[media] media_device: add a topology version field
Every time a graph object is added or removed, the version
of the topology changes. That's a requirement for the new
MEDIA_IOC_G_TOPOLOGY, in order to allow userspace to know
that the topology has changed after a previous call to it.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'include/media/media-device.h')
| -rw-r--r-- | include/media/media-device.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/media/media-device.h b/include/media/media-device.h index 0d1b9c687454..1b12774a9ab4 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -41,6 +41,8 @@ struct device; * @bus_info: Unique and stable device location identifier * @hw_revision: Hardware device revision * @driver_version: Device driver version + * @topology_version: Monotonic counter for storing the version of the graph + * topology. Should be incremented each time the topology changes. * @entity_id: Unique ID used on the last entity registered * @pad_id: Unique ID used on the last pad registered * @link_id: Unique ID used on the last link registered @@ -74,6 +76,8 @@ struct media_device { u32 hw_revision; u32 driver_version; + u32 topology_version; + u32 entity_id; u32 pad_id; u32 link_id; |