spi: spi-fsl-dspi: Rename fifo_{read,write} and {tx,cmd}_fifo_write

These function names are very generic and it is easy to get confused.
Rename them after the hardware register that they are accessing.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20200304220044.11193-6-olteanv@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-fsl-dspi.c

@@ -601,12 +601,12 @@ static void ns_delay_scale(char *psc, char *sc, int delay_ns,
 	}
 }
 
-static void fifo_write(struct fsl_dspi *dspi)
+static void dspi_pushr_write(struct fsl_dspi *dspi)
 {
 	regmap_write(dspi->regmap, SPI_PUSHR, dspi_pop_tx_pushr(dspi));
 }
 
-static void cmd_fifo_write(struct fsl_dspi *dspi)
+static void dspi_pushr_cmd_write(struct fsl_dspi *dspi)
 {
 	u16 cmd = dspi->tx_cmd;
 
@@ -615,7 +615,7 @@ static void cmd_fifo_write(struct fsl_dspi *dspi)
 	regmap_write(dspi->regmap_pushr, PUSHR_CMD, cmd);
 }
 
-static void tx_fifo_write(struct fsl_dspi *dspi, u16 txdata)
+static void dspi_pushr_txdata_write(struct fsl_dspi *dspi, u16 txdata)
 {
 	regmap_write(dspi->regmap_pushr, PUSHR_TX, txdata);
 }
@@ -631,18 +631,18 @@ static void dspi_tcfq_write(struct fsl_dspi *dspi)
 		 */
 		u32 data = dspi_pop_tx(dspi);
 
-		cmd_fifo_write(dspi);
-		tx_fifo_write(dspi, data & 0xFFFF);
-		tx_fifo_write(dspi, data >> 16);
+		dspi_pushr_cmd_write(dspi);
+		dspi_pushr_txdata_write(dspi, data & 0xFFFF);
+		dspi_pushr_txdata_write(dspi, data >> 16);
 	} else {
 		/* Write one entry to both TX FIFO and CMD FIFO
 		 * simultaneously.
 		 */
-		fifo_write(dspi);
+		dspi_pushr_write(dspi);
 	}
 }
 
-static u32 fifo_read(struct fsl_dspi *dspi)
+static u32 dspi_popr_read(struct fsl_dspi *dspi)
 {
 	u32 rxdata = 0;
 
@@ -652,7 +652,7 @@ static u32 fifo_read(struct fsl_dspi *dspi)
 
 static void dspi_tcfq_read(struct fsl_dspi *dspi)
 {
-	dspi_push_rx(dspi, fifo_read(dspi));
+	dspi_push_rx(dspi, dspi_popr_read(dspi));
 }
 
 static void dspi_eoq_write(struct fsl_dspi *dspi)
@@ -670,7 +670,7 @@ static void dspi_eoq_write(struct fsl_dspi *dspi)
 		if (fifo_size == (dspi->devtype_data->fifo_size - 1))
 			dspi->tx_cmd |= SPI_PUSHR_CMD_CTCNT;
 		/* Write combined TX FIFO and CMD FIFO entry */
-		fifo_write(dspi);
+		dspi_pushr_write(dspi);
 	}
 }
 
@@ -680,7 +680,7 @@ static void dspi_eoq_read(struct fsl_dspi *dspi)
 
 	/* Read one FIFO entry and push to rx buffer */
 	while ((dspi->rx < dspi->rx_end) && fifo_size--)
-		dspi_push_rx(dspi, fifo_read(dspi));
+		dspi_push_rx(dspi, dspi_popr_read(dspi));
 }
 
 static int dspi_rxtx(struct fsl_dspi *dspi)