http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=commitdiff;h=51e4152a969aa6d2306492ebf143932dcb535c9b;hp=9009b0e41c1e81e1a30acdb5d4ffbb6dc5e1345f
this patch is the logic of selecting which digital pin as primray
http:// git.kernel. org/?p= linux/kernel/ git/tiwai/ sound.git; a=commitdiff; h=51e4152a969aa 6d2306492ebf143 932dcb535c9b; hp=9009b0e41c1e 81e1a30acdb5d4f fbb6dc5e1345f
this patch is the logic of selecting which digital pin as primray