The ASUS SupremeFX Hi-Fi device is basically an "external sound card", a DAC+AMP.
You should be able to connect any digital audio output directly to it's digital audio inputs, treat it as a "black box" DAC+AMP. It shouldn't require any Windows driver code for any purpose outside Windows unless it implements the key to some sort of DRM/licensing lockout.
You might be able to interface audio from your RPi to the
ES9023 through I2S, or even through I2C/GPIO although you may need to use some sort of logic interface/adapter part (or create some RPi runcode with very precise hardware-event timings).
There are several major revisions of RPi, along with numerous clones and variants. It would help to know exactly which SBC you're working with.
https://audioberry.com/beginners-guide-raspberry-pi-i2s-audio/I've been able to interface my
JDS Labs O2+ODAC with my
ASUS Tinkerboard using both direct-audio and I2S methods. The same ES9023 and the same RPi architecture. (Although my audio parts have free open source schema vs ASUS stubborn lack of documentation.)
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