snd_hdac_chmap_to_spk_mask
int snd_hdac_chmap_to_spk_mask(unsigned char c);
int mask = snd_hdac_chmap_to_spk_mask(map[i]);
int comp_mask_req = snd_hdac_chmap_to_spk_mask(map[i+1]);
EXPORT_SYMBOL_GPL(snd_hdac_chmap_to_spk_mask);
int mask = snd_hdac_chmap_to_spk_mask(pos);
int mask = snd_hdac_chmap_to_spk_mask(map[i]);