I2C_OFS_IIC0
writeb(i2c_8bit_addr_from_msg(msg), priv->base + I2C_OFS_IIC0);
msg->buf[count] = readb(priv->base + I2C_OFS_IIC0);
writeb(msg->buf[count], priv->base + I2C_OFS_IIC0);
writeb(value, priv->base + I2C_OFS_IIC0);
value = readb(priv->base + I2C_OFS_IIC0);