[alsa-devel] snd_hwdep_open() as non-root user

Developers, I would like to access pin verb hda interface using snd_hwdep_open() function. It works fine if I run as root. I hope there is a way to configure my kubuntu so I can do it as non-root user (e.g. debugging) so far, I have been trying changing access flags for devices in /dev/snd/ directory to crwxrwxrwx no plus character. It did not change my privileges for snd_hwdep_open() - still returns –13. I assume that the device-file responsible is /dev/snd/hwC1D0, the same as parameter given to “hda-verb” program. I am developing a new hardware, using HDA codec. Please help