linux-kernel - Re: [PATCH] ALSA: usb-audio: Add Line Out to iterm

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Message-ID: <87ecoay7vt.wl-tiwai@suse.de>
Date: Wed, 31 Dec 2025 16:43:18 +0100
From: Takashi Iwai <tiwai@...e.de>
To: Zhang Heng <zhangheng@...inos.cn>
Cc: perex@...ex.cz,
	tiwai@...e.com,
	cryolitia.pukngae@...ux.dev,
	kuninori.morimoto.gx@...esas.com,
	lhi0729@...st.ac.kr,
	pav@....fi,
	rene@...ctco.de,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: usb-audio: Add Line Out to iterm_names

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@...inos.cn>

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
>