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

[Takashi Iwai]

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.


Takashi