[alsa-devel] Adding ELD control to alsa-lib hdmi device

[Raymond Yau]

2011/9/24 Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>:
> Hi,
> Now that I almost done with exposing a read-only ELD control for HDA/HDMI
> outputs, I was wondering how to read it from user-land. PulseAudio and
> others rely on the 'hdmi' device, and apparently I can't access this new ELD
> control, I have to use the 'hw:x,y' details.

If you are using iface_pcm



http://www.alsa-project.org/alsa-doc/alsa-lib/control_8c.html

CTL interface

use snd_ctl_open() to open "hw:x"


or  use

alsactl store