REG_CBUS_DISC_INTR0
REG_CBUS_DISC_INTR0, (u8)~BIT_RGND_READY_INT,
u8 stat = sii8620_readb(ctx, REG_CBUS_DISC_INTR0);
sii8620_write(ctx, REG_CBUS_DISC_INTR0, stat);