IRQ_EN_MASK
writel(IRQ_EN_MASK, host->regs + SD_EMMC_STATUS);
writel(IRQ_EN_MASK, host->regs + SD_EMMC_IRQ_EN);
u32 reg_irqen = IRQ_EN_MASK;
u32 status, raw_status, irq_mask = IRQ_EN_MASK;