spdif_loop       2436 sound/pci/cmipci.c DEFINE_BIT_SWITCH_ARG(spdif_loop, CM_REG_FUNCTRL1, CM_SPDFLOOP, 0, 1);
spdif_loop       2624 sound/pci/cmipci.c 	DEFINE_MIXER_SWITCH("IEC958 Loop", spdif_loop),