IC_RISINGCLR
__raw_writel(1 << bit, base + IC_RISINGCLR);
__raw_writel(1 << bit, base + IC_RISINGCLR);
__raw_writel(1 << bit, base + IC_RISINGCLR);
__raw_writel(1 << bit, base + IC_RISINGCLR);
__raw_writel(0xffffffff, base + IC_RISINGCLR);