From: Cryolitia PukNgae <cryolitia.pukngae@linux.dev>
Date: Thu, 2 Apr 2026 05:36:57 +0000 (+0800)
Subject: ALSA: usb-audio: apply quirk for MOONDROP JU Jiu
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4513d3e0bbc0585b86ccf2631902593ff97e88f5;p=thirdparty%2Flinux.git

ALSA: usb-audio: apply quirk for MOONDROP JU Jiu

It(ID 31b2:0111 JU Jiu) reports a MIN value -12800 for volume control, but
will mute when setting it less than -10880.

Thanks to my girlfriend Kagura for reporting this issue.

Cc: Kagura <me@mail.kagurach.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Cryolitia PukNgae <cryolitia.pukngae@linux.dev>
Link: https://patch.msgid.link/20260402-syy-v1-1-068d3bc30ddc@linux.dev
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 69026cf54979a..a25e8145af67e 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1204,6 +1204,13 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
 			cval->min = -11264; /* Mute under it */
 		}
 		break;
+	case USB_ID(0x31b2, 0x0111): /* MOONDROP JU Jiu */
+		if (!strcmp(kctl->id.name, "PCM Playback Volume")) {
+			usb_audio_info(chip,
+				       "set volume quirk for MOONDROP JU Jiu\n");
+			cval->min = -10880; /* Mute under it */
+		}
+		break;
 	}
 }