linux-kernel - [PATCH] ALSA: usb-audio: Add mute TLV for playback volumes on some devices

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Message-Id: <20250822-mixer-quirk-v1-1-b19252239c1c@uniontech.com>
Date: Fri, 22 Aug 2025 20:58:08 +0800
From: Cryolitia PukNgae via B4 Relay <devnull+cryolitia.uniontech.com@...nel.org>
To: Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org, 
 guanwentao@...ontech.com, niecheng1@...ontech.com, zhanjun@...ontech.com, 
 jeffbai@...c.io, Guoli An <anguoli@...ontech.com>, 
 Cryolitia PukNgae <cryolitia@...ontech.com>
Subject: [PATCH] ALSA: usb-audio: Add mute TLV for playback volumes on some
 devices

From: Cryolitia PukNgae <cryolitia@...ontech.com>

Applying the quirk of that, the lowest Playback mixer volume setting
mutes the audio output, on more devices.

Link: https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/2514
Tested-by: Guoli An <anguoli@...ontech.com>
Signed-off-by: Cryolitia PukNgae <cryolitia@...ontech.com>
---
 sound/usb/mixer_quirks.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 7cc27ae5512f07d5318443a7e03c1da7943bfb7a..6b47b3145d2cfd84bbadbe9e2b3e4383ed6828b4 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -4609,9 +4609,11 @@ void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
 			snd_dragonfly_quirk_db_scale(mixer, cval, kctl);
 		break;
 	/* lowest playback value is muted on some devices */
+	case USB_ID(0x0572, 0x1b09): /* Conexant Systems (Rockwell), Inc. */
 	case USB_ID(0x0d8c, 0x000c): /* C-Media */
 	case USB_ID(0x0d8c, 0x0014): /* C-Media */
 	case USB_ID(0x19f7, 0x0003): /* RODE NT-USB */
+	case USB_ID(0x2d99, 0x0026): /* HECATE G2 GAMING HEADSET */
 		if (strstr(kctl->id.name, "Playback"))
 			cval->min_mute = 1;
 		break;

---
base-commit: 3957a5720157264dcc41415fbec7c51c4000fc2d
change-id: 20250822-mixer-quirk-e074f7b7d373

Best regards,
-- 
Cryolitia PukNgae <cryolitia@...ontech.com>