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

Raymond Yau superquad.vortex2 at gmail.com
Sun Sep 25 15:15:14 CEST 2011

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


CTL interface

use snd_ctl_open() to open "hw:x"

or  use

alsactl store

More information about the Alsa-devel mailing list