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[1.34.7.240]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b422bb0db0fsm1250492a12.61.2025.07.31.04.06.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Jul 2025 04:06:22 -0700 (PDT) From: noble228@gmail.com To: tiwai@suse.com Cc: perex@perex.cz, hulianqin@vivo.com, lina+kernel@asahilina.net, cyan.vtb@gmail.com, dan.carpenter@linaro.org, bsevens@google.com, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, "noble.yang" Subject: [PATCH] ALSA: usb-audio: Add DSD support for Comtrue USB Audio device Date: Thu, 31 Jul 2025 19:06:14 +0800 Message-ID: <20250731110614.4070-1-noble228@gmail.com> X-Mailer: git-send-email 2.48.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "noble.yang" 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 --- sound/usb/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index bd24f3a78ea9..cbb66125f839 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -2408,6 +2408,8 @@ static const struct usb_audio_quirk_flags_table quirk= _flags_table[] =3D { QUIRK_FLAG_DSD_RAW), VENDOR_FLG(0x2d87, /* Cayin device */ QUIRK_FLAG_DSD_RAW), + VENDOR_FLG(0x2fc6, /* Comture-inc devices */ + QUIRK_FLAG_DSD_RAW), =20 VENDOR_FLG(0x3336, /* HEM devices */ QUIRK_FLAG_DSD_RAW), VENDOR_FLG(0x3353, /* Khadas devices */ --=20 2.48.1