CTRL_TERMINATE
OUTB(devc, portc->base + OFF_CTRL, CTRL_TERMINATE);
OUTB(devc, portc->base + OFF_CTRL, CTRL_TERMINATE); /* Stop */
OUTB(devc, portc->base + OFF_CTRL, CTRL_TERMINATE); /* Stop */
OUTB(portc->devc, portc->base + OFF_CTRL, CTRL_TERMINATE);
OUTB(devc, portc->base + OFF_CTRL, CTRL_TERMINATE);