REFO_ON
return readl(refo->ctrl_reg) & REFO_ON;
writel(REFO_ON | REFO_OE, PIC32_SET(refo->ctrl_reg));
writel(REFO_ON | REFO_OE, PIC32_CLR(refo->ctrl_reg));
writel(REFO_ON | REFO_DIVSW_EN, PIC32_SET(refo->ctrl_reg));
writel(REFO_ON, PIC32_CLR(refo->ctrl_reg));