Re: [PATCH 1/2] ALSA: usb-audio: Add quirk flags for Feaulle Rainbow

[Takashi Iwai]

On Wed, 08 Apr 2026 20:33:05 +0200,
Rong Zhang wrote:
> 
> Feaulle Rainbow is a wired USB-C dynamic in-ear monitor (IEM) featuring
> active noise cancellation (ANC).
> 
> The supported sample rates are 48000Hz and 96000Hz at 16bit or 24bit,
> but it does not support reading the current sample rate and results in
> an error message printed to kmsg. Set QUIRK_FLAG_GET_SAMPLE_RATE to skip
> the sample rate check.
> 
> Its playback mixer reports val = -15360/0/128. Setting -15360 (-60dB)
> mutes the playback, so QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE is needed.
> 
> Add a quirk table entry matching VID/PID=0x0e0b/0xfa01 and applying
> the mentioned quirk flags, so that it can work properly.
> 
> Quirky device sample:
> 
>   usb 7-1: New USB device found, idVendor=0e0b, idProduct=fa01, bcdDevice= 1.00
>   usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>   usb 7-1: Product: Feaulle Rainbow
>   usb 7-1: Manufacturer: Generic
>   usb 7-1: SerialNumber: 20210726905926
> 
> Signed-off-by: Rong Zhang <i@xxxxxxxx>

Now applied only this one to for-next branch.


thanks,

Takashi