Hi Mark We already have Audio-Graph-Card which is Of-Graph base general sound card driver. Basically it supports basic CPU-Codec connection, and is also supporting DPCM connection. Because it was forcibly expanded to DPCM, DT parsing is very limited and very difficult to add new features on it, for example Multi-CPU/Codec support, Codec2Codec support, etc. This patch adds more flexible new Audio-Graph-Card2 driver for it. Audio-Graph-Card and Audio-Graph-Card2 are similar, but don't have full compatibility. The reason why I need Audio-Graph-Card2 instead of updating Audio-Graph-Card is that it is very difficult to keep compatibility. Audio-Graph-Card2 supports Normal/DPCM/Codec2Codec Connection wich Single/Multi DAIs. And it is possible to Customizing. This patch-set adds Audio-Graph-Card2 driver and its custom driver sample, and DT settings sample which can be used for testing. To enable testing/debuging, this patch-set also adds Test-Component driver. We already have Dummy Component and/or Dummy DAI on soc-utils, but 1) we can't use it from DT, 2) it do nothing. Added new Test-Component can be used from DT, and it can indicate called function name. We can use it to trace callback order, understanding ALSA SoC behavior, etc, etc... Sample DT settings of Audio Graph Card2 is using Test-Component as CPU/Codec DAI. You can easily try to use/test it if you added below line to your DT file. Your .config needs to have below CONFIGs to use/test it. It will probe sample Sound Card which has Normal/DPCM/Multi/Codec2Codec connections. #include "../../../../../sound/soc/generic/audio-graph-card2-custom-sample.dtsi" CONFIG_SND_AUDIO_GRAPH_CARD2 CONFIG_SND_AUDIO_GRAPH_CARD2_CUSTOM_SAMPLE CONFIG_SND_TEST_COMPONENT Because Audio Graph Card2 is still under experimental stage, it will indicate such warning when probing, and the DT might be updated/exchanged. It can use Codec2Codec, but it will start automatically when probed, and can't stop it so far. It should be updated. Link: https://lore.kernel.org/r/87k0xszlep.wl-kuninori.morimoto.gx@xxxxxxxxxxx Link: https://lore.kernel.org/r/871r8u4s6q.wl-kuninori.morimoto.gx@xxxxxxxxxxx Link: https://lore.kernel.org/r/87a6mhwyqn.wl-kuninori.morimoto.gx@xxxxxxxxxxx Link: https://lore.kernel.org/r/87tuitusy4.wl-kuninori.morimoto.gx@xxxxxxxxxxx Link: https://lore.kernel.org/r/87a6jn56x0.wl-kuninori.morimoto.gx@xxxxxxxxxxx v1 -> v2 - don't use "port" base for_each loop v2 -> v3 - Rename audio-graph-card2 to rich-graph-card - Rename DSP to DPCM not to confuse - Normal/DPCM/Codec2Codec can use Single/Multi DAIs. - use dpcm/multi/codec2codec node instead of using extra compatible - Sample DTSI patch is separated to Single/Multi. v3 -> v4 - Rename rich-graph-card to audio-graph-card2 - fixup custom sample driver's connection bug - test-component compatible uses "verbose" instead of "vv" v4 -> v5 - tidyup git-log comment at - tidyup Custom Sample comment Kuninori Morimoto (16): ASoC: test-component: add Test Component YAML bindings ASoC: test-component: add Test Component for Sound debug/test ASoC: simple-card-utils: add asoc_graph_is_ports0() ASoC: simple-card-utils: add codec2codec support ASoC: add Audio Graph Card2 driver ASoC: audio-graph-card2: add Multi CPU/Codec support ASoC: audio-graph-card2: add DPCM support ASoC: audio-graph-card2: add Codec2Codec support ASoC: add Audio Graph Card2 Yaml Document ASoC: add Audio Graph Card2 Custom Sample ASoC: audio-graph-card2-custom-sample.dtsi: add Sample DT for Normal (Single) ASoC: audio-graph-card2-custom-sample.dtsi: add Sample DT for Normal (Nulti) ASoC: audio-graph-card2-custom-sample.dtsi: add DPCM sample (Single) ASoC: audio-graph-card2-custom-sample.dtsi: add DPCM sample (Multi) ASoC: audio-graph-card2-custom-sample.dtsi: add Codec2Codec sample (Single) ASoC: audio-graph-card2-custom-sample.dtsi: add Codec2Codec sample (Multi) .../bindings/sound/audio-graph-card2.yaml | 57 + .../bindings/sound/test-component.yaml | 33 + include/sound/graph_card.h | 21 + include/sound/simple_card_utils.h | 4 + sound/soc/generic/Kconfig | 20 + sound/soc/generic/Makefile | 6 + .../generic/audio-graph-card2-custom-sample.c | 183 +++ .../audio-graph-card2-custom-sample.dtsi | 227 +++ sound/soc/generic/audio-graph-card2.c | 1281 +++++++++++++++++ sound/soc/generic/simple-card-utils.c | 46 +- sound/soc/generic/test-component.c | 659 +++++++++ 11 files changed, 2536 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/sound/audio-graph-card2.yaml create mode 100644 Documentation/devicetree/bindings/sound/test-component.yaml create mode 100644 sound/soc/generic/audio-graph-card2-custom-sample.c create mode 100644 sound/soc/generic/audio-graph-card2-custom-sample.dtsi create mode 100644 sound/soc/generic/audio-graph-card2.c create mode 100644 sound/soc/generic/test-component.c -- 2.25.1
