REFO_SEL_SHIFT
v = (readl(refo->ctrl_reg) >> REFO_SEL_SHIFT) & REFO_SEL_MASK;
v &= ~(REFO_SEL_MASK << REFO_SEL_SHIFT);
v |= index << REFO_SEL_SHIFT;
v &= ~(REFO_SEL_MASK << REFO_SEL_SHIFT);
v |= index << REFO_SEL_SHIFT;