[alsa-devel] [PATCH 0/3] Make HDMI ELD usable with hotplug

[Takashi Iwai]

At Mon, 18 Feb 2013 15:28:48 +0100,
Takashi Iwai wrote:
> 
> At Mon, 18 Feb 2013 14:50:49 +0100,
> David Henningsson wrote:
> > 
> > On 02/18/2013 02:35 PM, Takashi Iwai wrote:
> > > At Mon, 18 Feb 2013 14:11:10 +0100,
> > > David Henningsson wrote:
> > >>
> > >> I'm experimenting with using ELD information in PulseAudio and found
> > >> that it didn't work very well with hotplugging.
> > >> Neither the proc file nor the ELD kcontrol was cleared correctly after
> > >> unplug, and there was no way (except polling) to find out when ELD
> > >> has become available.
> > >
> > > Did you try Xingchao's patch for drm/i915?  It's queued in
> > > drm-intel-next:
> > >
> > >      commit 7b9f35a6dd72f89452c58bbdbaf063027bf857ec
> > >      Author: Wang Xingchao <xingchao.wang at intel.com>
> > >      Date:   Tue Jan 22 23:25:25 2013 +0800
> > >
> > >      drm/i915: HDMI/DP - ELD info refresh support for Haswell
> > 
> > Thanks for the hint. I'm currently developing not on a Haswell machine, 
> > but an (I think) Arrandale that I bought a few years ago. So I guess 
> > this patch does not have any effect on my hw?
> 
> OK, then it's not.
> 
> You are testing relatively new kernel, right?
> For example, the commits for drm/i915
>    b98b60167279df3acac9422c3c9820d9ebbcf9fb
> and
>    3cce574f0190dd149472059fb69267cf83d290f9
> are relevant with HDMI audio to make unsol event working at
> hotplug/unplug.  They should be in 3.7.

In anyway, your patches seem individual from the video driver side but
the fixes only in the sound driver side, so better to apply.

Will comment on each patch later.


Takashi