CONTROL_CENTER_LFE_CHANNEL 526 sound/pci/ca0106/ca0106_mixer.c CONTROL_CENTER_LFE_CHANNEL, PLAYBACK_VOLUME2), CONTROL_CENTER_LFE_CHANNEL 535 sound/pci/ca0106/ca0106_mixer.c CONTROL_CENTER_LFE_CHANNEL, PLAYBACK_VOLUME1),