[alsa-devel] [PATCH] ALSA: hda - Remove ignore_misc_bit

Takashi Iwai tiwai at suse.de
Tue Sep 18 10:26:58 CEST 2012

At Mon, 17 Sep 2012 09:39:01 +0200,
David Henningsson wrote:
> > But the jack detection controls don't follow this yet.  Maybe we can
> > set such a jack control as inactive state when the jack detection is
> > disabled.
> >
> > (And this reminds me that we can cut off "Phantom" name hack by
> >   following the same rule -- just set the control inactive when it has
> >   no real detection.  But it still appears in control list.)
> Looking at the alsa-lib API, this seems doable. It seems possible to 
> figure out using snd_hctl_elem_info and then 
> snd_ctl_elem_info_is_inactive. If it is also runtime changeable (i e 
> depending on some other mixer control), we need a callback to fire on 
> the hctl.

Why are you using snd_hctl?  For looking over jack controls, using
snd_ctl_* is more straightforward.

Also, which callback are you thinking of?  The phantom jack is
basically just a placeholder, so there should be no activity from


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