spi: rspi: Extract rspi_wait_for_{tx_empty,rx_full}()

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c
index 5639f95..d04a4ac 100644 (file)
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -405,11 +405,22 @@ static int rspi_wait_for_interrupt(struct rspi_data *rspi, u8 wait_mask,
        return 0;
 }
 
+static inline int rspi_wait_for_tx_empty(struct rspi_data *rspi)
+{
+       return rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+}
+
+static inline int rspi_wait_for_rx_full(struct rspi_data *rspi)
+{
+       return rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE);
+}
+
 static int rspi_data_out(struct rspi_data *rspi, u8 data)
 {
-       if (rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE) < 0) {
+       int error = rspi_wait_for_tx_empty(rspi);
+       if (error < 0) {
                dev_err(&rspi->master->dev, "transmit timeout\n");
-               return -ETIMEDOUT;
+               return error;
        }
        rspi_write_data(rspi, data);
        return 0;
@@ -417,11 +428,13 @@ static int rspi_data_out(struct rspi_data *rspi, u8 data)
 
 static int rspi_data_in(struct rspi_data *rspi)
 {
+       int error;
        u8 data;
 
-       if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) {
+       error = rspi_wait_for_rx_full(rspi);
+       if (error < 0) {
                dev_err(&rspi->master->dev, "receive timeout\n");
-               return -ETIMEDOUT;
+               return error;
        }
        data = rspi_read_data(rspi);
        return data;
@@ -737,7 +750,7 @@ static int rspi_transfer_out_in(struct rspi_data *rspi,
        }
 
        /* Wait for the last transmission */
-       rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+       rspi_wait_for_tx_empty(rspi);
 
        return 0;
 }
@@ -783,7 +796,7 @@ static int rspi_rz_transfer_out_in(struct rspi_data *rspi,
        }
 
        /* Wait for the last transmission */
-       rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+       rspi_wait_for_tx_empty(rspi);
 
        return 0;
 }
@@ -818,7 +831,7 @@ static int qspi_transfer_out_in(struct rspi_data *rspi,
        }
 
        /* Wait for the last transmission */
-       rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+       rspi_wait_for_tx_empty(rspi);
 
        return 0;
 }
@@ -836,7 +849,7 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer)
        }
 
        /* Wait for the last transmission */
-       rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+       rspi_wait_for_tx_empty(rspi);
 
        return 0;
 }