Hi, I'm not an expert and I'm sorry if this is the wrong place for thsi kind of requests.

I'm trying to add native DSD support for this integrated DAC/amplifier: https://www.mission.co.uk/778x/

Unfortunately, vendor is not collaborative. It should support up to 384kHz (PCM) and DSD256 and have a XMOS USB chip and a ESS Sabre32 ES9018K2M DAC chip.   I tried simply to add:    case USB_ID(0x2622, 0x0011): /* Mission 778X */ in the "switch" section under /* XMOS based USB DACs */ and it works with the DSD_U32_BE format (tried using MPD - Music Player Demo).

Is it possible to officially add this to source or do you need a request from OEM?

Thanks --