No, what I was saying is that you need to define multiple streams e.g.
- headset capture (configured with or without click suppression)
- mic capture (configured with AMICs or DMICs)
- playback (or possibly different endpoint specific streams depending
on whether concurrency between endpoint is possible)
if you change the configuration, you have to tear down the stream and
reconfigure it - and for this we already have the required API and you
can guarantee that the configuration for that stream is consistent
between master and slave(s).
Yes, we make sure that new configuration is only applied before the
stream is started, and not in middle of already started stream.
ok, we are almost in agreement but...
All am saying is that codec can decide which ports it has to select
based on mixer setting before the stream is setup/started. This
updated mapping between slv port and master ports is passed as part
of the port_config in sdw_stream_add_slave().
if you completely remove the stream and re-add it with updated
configuration things should work.
That's exactly what we do currently!
The updated ports due to new configuration ex: for "mic capture" dailink
needs to be communicated from slave(codec) to master so that it can
allocate correct ports. That is what this patch is trying to do (share
current port map information).
.. we have a disconnect on how to do this configuration update.
The 'stream' support was designed so that a stream can be split across
multiple devices (both masters and slaves). With this design we need to
have a central configuration and distribute the information to all
devices taking part of the stream.
It seems you are in a different solution-space, where the codec driver
needs to notify the master of which ports it needs to use?
I also don't see where the mapping is actually set. Patch 2 uses a
mapping but there's no codec driver change that defines the mapping?
Do you actually call sdw_stream_add_slave() with a new mapping?
It feels we are missing the codec part to really see what you are trying
to do?
