2011/9/24 Pierre-Louis Bossart pierre-louis.bossart@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