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media: docs-rst: media: Document broken frame handling in stream stop for CSI-2 

Some CSI-2 transmitters will finish an ongoing frame whereas others will
not. Document that receiver drivers should not assume a particular
behaviour but to work in both cases.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sakari Ailus 2017-08-16 08:20:18 -04:00 committed by Mauro Carvalho Chehab
parent c67215263e
commit 3cdb977ec8
1 changed files with 10 additions and 0 deletions
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Documentation/media/kapi/csi2.rst
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@ -51,6 +51,16 @@ not active. Some transmitters do this automatically but some have to
be explicitly programmed to do so, and some are unable to do so
altogether due to hardware constraints.
Stopping the transmitter
^^^^^^^^^^^^^^^^^^^^^^^^
A transmitter stops sending the stream of images as a result of
calling the ``.s_stream()`` callback. Some transmitters may stop the
stream at a frame boundary whereas others stop immediately,
effectively leaving the current frame unfinished. The receiver driver
should not make assumptions either way, but function properly in both
cases.
Receiver drivers
----------------