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soundwire: keep track of Masters in a stream

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A multi link bankswitch can be done if the hardware supports and
the stream is handled by multiple Master(s).

This preparatory patch adds support to track m_rt in a stream.
Modifying m_rt_count and usage is added as part of the next patch.

Signed-off-by: Shreyas NC <[email protected]>
Acked-by: Pierre-Louis Bossart <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
This commit is contained in:
Shreyas NC 2018-07-27 14:44:15 +05:30 • committed by Vinod Koul
commit 9b5c132a1e
2 changed files with 3 additions and 0 deletions
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1
drivers/soundwire/stream.c
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@ -865,6 +865,7 @@ struct sdw_stream_runtime *sdw_alloc_stream(char *stream_name)
stream->name = stream_name;
INIT_LIST_HEAD(&stream->master_list);
stream->state = SDW_STREAM_ALLOCATED;
stream->m_rt_count = 0;
return stream;
}