WM8983_BIASEN_MASK  877 sound/soc/codecs/wm8983.c 					    WM8983_BIASEN_MASK, WM8983_BIASEN);
WM8983_BIASEN_MASK  900 sound/soc/codecs/wm8983.c 				    WM8983_VMIDSEL_MASK | WM8983_BIASEN_MASK,