On Wed, Feb 22, 2023 at 10:14:02AM +0200, Svyatoslav Ryhel wrote:

ср, 22 лют. 2023 р. о 00:41 Mark Brown [off-list ref] пише:

quoted

On Tue, Feb 21, 2023 at 08:32:10PM +0200, Svyatoslav Ryhel wrote:

quoted

FM34NE is digital sound processing chip used for active
noise suppression mainly on ASUS Transformers.

This looks like it should be fairly straightforward to support
within ASoC without too much work, and since it's in the audio
path it should probably be referenced from the sound card it'll
end up having an ABI impact on the card.  Take a look at wm9090

wm9090 is a sound codec, like rt5631 or wm8903 while fm34 is NOT a
sound codec. It is sound processing device which must be active only

The WM9090 is not a CODEC, it is an analog amplifier with no digital
inputs or outputs.  That is exactly the same from a system integration
point of view, it takes an audio stream in and routes it to an output
with some processing.

when DMIC is used. In all other cases it has to be bypassed. At the same time,
it has to be set up because else there will be no sound on the actual device.

DAPM can sort all that out for you.