INTERRUPT_ENABLE
ce4231_read(sc, SP_PIN_CONTROL) | INTERRUPT_ENABLE);
ce4231_read(sc, SP_PIN_CONTROL) & (~INTERRUPT_ENABLE));
INTERRUPT_ENABLE | ad_read(sc, SP_PIN_CONTROL));
ad_read(sc, SP_PIN_CONTROL) & ~INTERRUPT_ENABLE);
INTERRUPT_ENABLE, /* Pin control */
cs4231_read(sc, SP_PIN_CONTROL) | INTERRUPT_ENABLE);
cs4231_read(sc, SP_PIN_CONTROL) & (~INTERRUPT_ENABLE));