Re: [PATCH] ALSA: usb-audio: Add native DSD support for Cambridge Audio streamers

From: Takashi Iwai

Date: Sat Oct 03 2026 - 05:14:06 EST


On Fri, 02 Oct 2026 14:52:37 +0200,
Matus Gajdos wrote:
>
> The Cambridge Audio streamer advertises the UAC2 RAW_DATA format on
> altsetting 2 of its playback interface, but without the DSD_RAW quirk
> flag the driver exposes it only as a SPECIAL format that cannot be
> used.
>
> Add QUIRK_FLAG_DSD_RAW for the device (USB ID 22e8:ca10), so the
> altsetting is exposed as DSD_U32_BE, enabling native DSD64/128/256
> playback.
>
> Tested with: gst-launch-1.0 filesrc location=file.dsf ! \
> avdemux_dsf ! dsdconvert ! \
> alsasink device=hw:2,0
>
> Signed-off-by: Matus Gajdos <matuszpd@xxxxxxxxx>

Applied now. Thanks.


Takashi