i2c_dw_prepare_clk
i2c_dw_prepare_clk(i_dev, false);
i2c_dw_prepare_clk(i_dev, true);
i2c_dw_prepare_clk(dev, true);
EXPORT_SYMBOL_GPL(i2c_dw_prepare_clk);
i2c_dw_prepare_clk(dev, false);
int i2c_dw_prepare_clk(struct dw_i2c_dev *dev, bool prepare);
i2c_dw_prepare_clk(dev, false);
i2c_dw_prepare_clk(dev, true);
ret = i2c_dw_prepare_clk(dev, true);
i2c_dw_prepare_clk(dev, false);
i2c_dw_prepare_clk(dev, false);