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ALSA: usb-audio: Add native DSD support for Cambridge Audio streamers

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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 <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Matus Gajdos authored and Takashi Iwai committed 2026-10-03 11:11:11 +02:00
1 parent b4e7fc36e3
commit 4e1462e7cd
1 file changed
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sound/usb/quirks.c
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@@ -2510,6 +2510,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
QUIRK_FLAG_DSD_RAW),
DEVICE_FLG(0x21b4, 0x0232, /* Ayre QX-5 Twenty */
QUIRK_FLAG_DSD_RAW),
DEVICE_FLG(0x22e8, 0xca10, /* Cambridge Audio streamers */
QUIRK_FLAG_DSD_RAW),
DEVICE_FLG(0x2522, 0x0007, /* LH Labs Geek Out HD Audio 1V5 */
QUIRK_FLAG_SET_IFACE_FIRST),
DEVICE_FLG(0x25aa, 0x600b, /* TAE1159 */