[PATCH v1] ALSA: usb-audio: Add native DSD support for NiceHCK Octave

[Shengyu Qu <wiagn@4d2.org>]

NiceHCK Octave is an OEM of TTGK TT39039F01-PROMAX[1] and supports DSD64/
DSD128/DSD256/DSD512[2].

It advertises the UAC2 RAW_DATA format on altsetting 4 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 3302:39c3), so the altsetting
is exposed as DSD_U32_BE, enabling native DSD playback.

[1] https://www.audiosciencereview.com/forum/index.php?threads/nicehck-octave-dongle-dac.65535/post-2390027
[2] https://szttgk.com/product/HIFIAUDIOMODULE/846.html

Signed-off-by: Shengyu Qu <wiagn@4d2.org>
---
 sound/usb/quirks.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 4ec1f2a0b359a..d59eef24363ec 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2829,6 +2829,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_DSD_RAW),
 	DEVICE_FLG(0x3302, 0x17c2, /* TTGK Technology USB-C Audio */
 		   QUIRK_FLAG_FORCE_IFACE_RESET | QUIRK_FLAG_IFACE_DELAY),
+	DEVICE_FLG(0x3302, 0x39c3, /* NiceHCK Octave */
+		   QUIRK_FLAG_DSD_RAW),
 	DEVICE_FLG(0x339b, 0x3a07, /* Synaptics HONOR USB-C HEADSET */
 		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x3443, 0x930d, /* NexiGo N930W 60fps Webcam */
-- 
2.56.0