After I upgraded to 3.14 Linux Kernel from 3.13 the HDMI audio isn't working
anymore while before it was.
After I checked dmesg output I found this row:

[drm:dce6_afmt_write_speaker_allocation] *ERROR* Couldn't read Speaker
Allocation Data Block: 0

so I thought it was something related to the kernel wasn't able to retrieve
correct info from my EDID's display.

I'm currently using arch linux distro with mesa 10.1 and xf86-video-ati 7.3.0

Here are my log files:

dmesg
http://pastebin.com/fH88rXNs

Xorg.0.log
http://pastebin.com/qcKhTiAs

lspci -vv
http://pastebin.com/SLcyJJaE