Hi Mark Cc Bard, Pierre-Louis
Current ASoC is supporting CPU/Codec = N:M (N < M) connection by using ch_map idea. This patch expand that all connection uses this idea, and no limit of N < M [1].
This patch is tested on Audio-Graph-Card2 with sample dtsi, but needs Tested-by, at least from Intel.
Link: https://lore.kernel.org/r/87fs6wuszr.wl-kuninori.morimoto.gx@renesas.com [1]
Kuninori Morimoto (4): ASoC: makes CPU/Codec channel connection map more generic ASoC: audio-graph-card2: add CPU:Codec = N:M support ASoC: audio-graph-card2-custom-sample: add CPU/Codec = N:M sample dt-bindings: audio-graph-port: ch_maps property
.../bindings/sound/audio-graph-port.yaml | 2 + include/sound/soc.h | 48 +++++- .../audio-graph-card2-custom-sample.dtsi | 138 +++++++++++++++--- sound/soc/generic/audio-graph-card2.c | 29 ++++ sound/soc/intel/boards/sof_sdw.c | 14 +- sound/soc/soc-core.c | 83 +++++++++++ sound/soc/soc-dapm.c | 47 +++--- sound/soc/soc-pcm.c | 73 ++++----- 8 files changed, 343 insertions(+), 91 deletions(-)