[alsa-devel] [PATCH] ALSA: HDA: Add jack detection for HDMI

[Stephen Warren]

Takashi Iwai wrote at Thursday, May 19, 2011 4:06 AM:
> At Thu, 19 May 2011 11:55:21 +0200,
> David Henningsson wrote:
> >
> > On 2011-05-17 17:46, Takashi Iwai wrote:
> > > At Tue, 17 May 2011 15:46:43 +0200,
> > > David Henningsson wrote:
> > >>
> > >> Just as for headphones and microphone jacks, this patch adds reporting
> > >> of HDMI jack status through the input layer.
> > >>
>...
> 
> OK, as the jack report itself doesn't play a big role yet so far for
> HD-audio, let's get it in, and give pressure to graphics guys :)

I've been testing a preliminary fix for this internally. I found that
the /proc ELD files correctly report monitor_present and eld_valid when
we hot unplug a monitor, but the other fields in the ELD file are not
cleared out to their default state. As best I can tell, this is an ALSA
driver issue, since our display driver only fills in the other fields
when ELDV==1.

-- 
nvpublic