IER_OFFSET
writel(IER_I2C_INT_EN_MASK, dev->base + IER_OFFSET);
writel(0, dev->base + IER_OFFSET);
writel(IER_READ_COMPLETE_INT_MASK, dev->base + IER_OFFSET);
writel(0, dev->base + IER_OFFSET);
writel(IER_I2C_INT_EN_MASK, dev->base + IER_OFFSET);
writel(0, dev->base + IER_OFFSET);
dev->base + IER_OFFSET);
writel(0, dev->base + IER_OFFSET);
writel(0, dev->base + IER_OFFSET);