i2c: designware: Make HW init functions static

Recent i2c-designware slave support patches use master or slave HW init
functions through the function pointer so we can declare them static.

While at it, rename i2c_dw_init() as i2c_dw_init_master().

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Luis Oliveira <lolivei@synopsys.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-designware-core.h

@@ -306,8 +306,6 @@ int i2c_dw_handle_tx_abort(struct dw_i2c_dev *dev);
 u32 i2c_dw_func(struct i2c_adapter *adap);
 void i2c_dw_disable(struct dw_i2c_dev *dev);
 void i2c_dw_disable_int(struct dw_i2c_dev *dev);
-int i2c_dw_init(struct dw_i2c_dev *dev);
-int i2c_dw_init_slave(struct dw_i2c_dev *dev);
 
 extern u32 i2c_dw_read_comp_param(struct dw_i2c_dev *dev);
 extern int i2c_dw_probe(struct dw_i2c_dev *dev);

drivers/i2c/busses/i2c-designware-master.c

@@ -51,7 +51,7 @@ static void i2c_dw_configure_fifo_master(struct dw_i2c_dev *dev)
  * This function is called during I2C init function, and in case of timeout at
  * run time.
  */
-int i2c_dw_init(struct dw_i2c_dev *dev)
+static int i2c_dw_init_master(struct dw_i2c_dev *dev)
 {
 	u32 hcnt, lcnt;
 	u32 reg, comp_param1;
@@ -171,7 +171,6 @@ int i2c_dw_init(struct dw_i2c_dev *dev)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(i2c_dw_init);
 
 static void i2c_dw_xfer_init(struct dw_i2c_dev *dev)
 {
@@ -444,7 +443,7 @@ i2c_dw_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
 	if (!wait_for_completion_timeout(&dev->cmd_complete, adap->timeout)) {
 		dev_err(dev->dev, "controller timed out\n");
 		/* i2c_dw_init implicitly disables the adapter */
-		i2c_dw_init(dev);
+		i2c_dw_init_master(dev);
 		ret = -ETIMEDOUT;
 		goto done;
 	}
@@ -622,7 +621,7 @@ int i2c_dw_probe(struct dw_i2c_dev *dev)
 
 	init_completion(&dev->cmd_complete);
 
-	dev->init = i2c_dw_init;
+	dev->init = i2c_dw_init_master;
 	dev->disable = i2c_dw_disable;
 	dev->disable_int = i2c_dw_disable_int;
 

drivers/i2c/busses/i2c-designware-slave.c

@@ -49,7 +49,7 @@ static void i2c_dw_configure_fifo_slave(struct dw_i2c_dev *dev)
  * This function is called during I2C init function, and in case of timeout at
  * run time.
  */
-int i2c_dw_init_slave(struct dw_i2c_dev *dev)
+static int i2c_dw_init_slave(struct dw_i2c_dev *dev)
 {
 	u32 sda_falling_time, scl_falling_time;
 	u32 reg, comp_param1;
@@ -168,7 +168,6 @@ int i2c_dw_init_slave(struct dw_i2c_dev *dev)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(i2c_dw_init_slave);
 
 static int i2c_dw_reg_slave(struct i2c_client *slave)
 {