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ALSA: usb-audio: apply quirk for Huawei Technologies Co., Ltd. CM-Q3

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There're several different actual hardwares sold by Huawei, using the
same USB ID 12d1:3a07.

The first one we found, having a volume control named "Headset Playback
Volume", reports a min value -15360, and will mute iff setting it to
-15360. It can be simply fixed by quirk flag MIXER_PLAYBACK_MIN_MUTE,
which we have already submitted previously.[1]

The second one we found today, having a volume control named "PCM
Playback Volume", reports its min -11520 and res 256, and will mute
when less than -11008. Because of the already existing quirk flag, we
can just set its min to -11264, and the new minimum value will still
not be available to userspace, so that userspace's minimum will be the
correct -11008.

1. https://lore.kernel.org/all/20250903-sound-v1-3-d4ca777b8512@uniontech.com/

Tested-by: Guoli An <anguoli@uniontech.com>
Signed-off-by: Cryolitia PukNgae <cryolitia.pukngae@linux.dev>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Cryolitia PukNgae 2025-10-11 17:51:18 +08:00 committed by Takashi Iwai
parent 30b3211aa2
commit 77908b8176
1 changed files with 7 additions and 0 deletions
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7
sound/usb/mixer.c
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@ -1189,6 +1189,13 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
cval->min = -14208; /* Mute under it */
}
break;
case USB_ID(0x12d1, 0x3a07): /* Huawei Technologies Co., Ltd. CM-Q3 */
if (!strcmp(kctl->id.name, "PCM Playback Volume")) {
usb_audio_info(chip,
"set volume quirk for Huawei Technologies Co., Ltd. CM-Q3\n");
cval->min = -11264; /* Mute under it */
}
break;
}
}