I2C_IT_BERR
I2C_IT_MAL | I2C_IT_BERR);
irq_mask = (I2C_IT_TXFOVR | I2C_IT_MAL | I2C_IT_BERR);
case I2C_IT_BERR:
i2c_set_bit(priv->virtbase + I2C_ICR, I2C_IT_BERR);