CS_PC_HDPHMUTE    409 dev/sbus/cs4231.c 	pc = cs4231_read(sc, SP_PIN_CONTROL) | CS_PC_HDPHMUTE | CS_PC_LINEMUTE;
CS_PC_HDPHMUTE    431 dev/sbus/cs4231.c 			pc &= ~CS_PC_HDPHMUTE;