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ALSA: usb-audio: Add mute TLV for playback volumes on RODE NT-USB 

For the RODE NT-USB the lowest Playback mixer volume setting mutes the
audio output. But it is not reported as such causing e.g. PulseAudio to
accidentally mute the device when selecting a low volume.

Fix this by applying the existing quirk for this kind of issue when the
device is detected.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220311201400.235892-1-lars@metafoo.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lars-Peter Clausen 2022-03-11 21:14:00 +01:00 committed by Takashi Iwai
parent 882bd07f56
commit 0f306cca42
1 changed files with 4 additions and 3 deletions
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7
sound/usb/mixer_quirks.c
View File

@ -3360,9 +3360,10 @@ void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
if (unitid == 7 && cval->control == UAC_FU_VOLUME)
snd_dragonfly_quirk_db_scale(mixer, cval, kctl);
break;
/* lowest playback value is muted on C-Media devices */
case USB_ID(0x0d8c, 0x000c):
case USB_ID(0x0d8c, 0x0014):
/* lowest playback value is muted on some devices */
case USB_ID(0x0d8c, 0x000c): /* C-Media */
case USB_ID(0x0d8c, 0x0014): /* C-Media */
case USB_ID(0x19f7, 0x0003): /* RODE NT-USB */
if (strstr(kctl->id.name, "Playback"))
cval->min_mute = 1;
break;