commit f8263902e9b5daf9d8b0eb38697722692c3be145
author Pin-chih Lin <johnylin@google.com> Wed Jan 26 05:46:51 2022 +0800
committer Pin-chih Lin <johnylin@google.com> Wed Jan 26 06:30:40 2022 +0800
tree 8d3549387d9dda879c06d404801e8d92b785f289
parent 6c8a7c4a9bdeff60cde84ce8236a1fca9e72824f

topology: sof-adl-max98357a-rt5682-waves-2way: add new topology

Add support for four max98357a speaker amplifiers running in TDM mode
which format is 8 slots with 32 bit slot/sample width on ADL boards.

To implement the 2-way woofer/tweeter speaker function in SOF, there is a demux
to create 2 streams for the branched pipelines. A Waves-codec widget is applied
before the demux for audio quality enhancement, and the other Waves-codec
widgets are located one per branch for EQ/DRC including band-split filters of
Woofer and Tweeter.

There is a mux before DAI to merge the branched Woofer and Tweeter streams into
one 4-channel stream which is fed into DAI then.

The formation of this split-and-merge pipeline is a bit tricky. The topology
graph is as following:

host PCM0 -> WAVES -> DEMUX -> WAVES ---+                         <PIPE#9>
                          |             |
                          +--> WAVES -> MUX -> DAI (Speaker SSP)  <PIPE#1>

There are two pipelines with ID #1 and #9, where PIPE#9 is set DAI#1 as the
scheduled component to make them being scheduled together. They are connected
via DEMUX#9 and MUX#1. The priority of PIPE#9 should be higher than PIPE#1 to
assure PIPE#9 is scheduled first (PCM should be the first component for the
copy process).

Moreover, the commit of mux_params() modification is required to support the
split-and-merge pipeline design.

Signed-off-by: Pin-chih Lin <johnylin@google.com>