From ea6016c9ec61d9d728e468a2f13059d34d5115a4 Mon Sep 17 00:00:00 2001 From: "noble.yang" Date: Thu, 31 Jul 2025 19:06:14 +0800 Subject: [PATCH] ALSA: usb-audio: Add DSD support for Comtrue USB Audio device [ Upstream commit e9df1755485dd90a89656e8a21ec4d71c909fa30 ] The vendor Comtrue Inc. (0x2fc6) produces USB audio chipsets like the CT7601 which are capable of Native DSD playback. This patch adds QUIRK_FLAG_DSD_RAW for Comtrue (VID 0x2fc6), which enables native DSD playback (DSD_U32_LE) on their USB Audio device. This has been verified under Ubuntu 25.04 with JRiver. Signed-off-by: noble.yang Link: https://patch.msgid.link/20250731110614.4070-1-noble228@gmail.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/usb/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index f19c808444c9..def326ddef26 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -2305,6 +2305,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = { QUIRK_FLAG_DSD_RAW), VENDOR_FLG(0x2d87, /* Cayin device */ QUIRK_FLAG_DSD_RAW), + VENDOR_FLG(0x2fc6, /* Comture-inc devices */ + QUIRK_FLAG_DSD_RAW), VENDOR_FLG(0x3336, /* HEM devices */ QUIRK_FLAG_DSD_RAW), VENDOR_FLG(0x3353, /* Khadas devices */