Re: [PATCH] ALSA: usb-audio: Add Line Out to iterm_names

[Jaroslav Kysela]

On 1/1/26 02:18, zhangheng wrote:
> Sorry, this is not a new standard. It's just my personal idea. Can we
> promote
>
> the addition of this, adding this Line Out, so that it can be similar to
> hda,
>
> simplifying the adaptation task of the core outer layer? The jack events
>
> are relatively unified. Otherwise, for the current sound card, the
>
> rear jack event is Speaker, which requires separate adaptation.

Could you show us alsa-info.sh output? It looks that this hardware may require 
a custom UCM configuration.

				Jaroslav

> 在 2025/12/31 23:43, Takashi Iwai 写道:
> > On Mon, 29 Dec 2025 10:31:29 +0100,
> > Zhang Heng wrote:
> > > There are three jack events for a sound card on a desktop computer,
> > > namely Speaker, Headphone, and Desktop Speaker. When both audio
> > > devices are available, users cannot distinguish which audio device
> > > is being used. Can we consider adding Line Out? similar to the HDA
> > > sound card. This can change one of them and reduce the complexity
> > > of the upper layer adaptation of the sound card.
> > >
> > > Signed-off-by: Zhang Heng <zhangheng@xxxxxxxxxx>
> > Is 0x0308 something properly defined standard?
> > If so, we can add the entry, of course.
> >
> >
> > thanks,
> >
> > Takashi
> >
> >
> > > ---
> > >    sound/usb/mixer.c | 1 +
> > >    1 file changed, 1 insertion(+)
> > >
> > > diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
> > > index 3af71d42b9b9..bdde4261d994 100644
> > > --- a/sound/usb/mixer.c
> > > +++ b/sound/usb/mixer.c
> > > @@ -615,6 +615,7 @@ static struct iterm_name_combo {
> > >    	{ 0x0305, "Room Speaker" },
> > >    	{ 0x0306, "Com Speaker" },
> > >    	{ 0x0307, "LFE" },
> > > +	{ 0x0308, "Line Out" },
> > >    	{ 0x0600, "External In" },
> > >    	{ 0x0601, "Analog In" },
> > >    	{ 0x0602, "Digital In" },
> > > --
> > > 2.47.1


--
Jaroslav Kysela <perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.