spi/dw_spi: clean the cs_control code

[cascardo/linux.git] / drivers / spi / dw_spi.c

diff --git a/drivers/spi/dw_spi.c b/drivers/spi/dw_spi.c
index 11fbbf6..5624785 100644 (file)
--- a/drivers/spi/dw_spi.c
+++ b/drivers/spi/dw_spi.c
@@ -181,10 +181,6 @@ static void flush(struct dw_spi *dws)
        wait_till_not_busy(dws);
 }
 
-static void null_cs_control(u32 command)
-{
-}
-
 static int null_writer(struct dw_spi *dws)
 {
        u8 n_bytes = dws->n_bytes;
@@ -322,7 +318,7 @@ static void giveback(struct dw_spi *dws)
                                        struct spi_transfer,
                                        transfer_list);
 
-       if (!last_transfer->cs_change)
+       if (!last_transfer->cs_change && dws->cs_control)
                dws->cs_control(MRST_SPI_DEASSERT);
 
        msg->state = NULL;
@@ -549,13 +545,13 @@ static void pump_transfers(unsigned long data)
         */
        if (dws->cs_control) {
                if (dws->rx && dws->tx)
-                       chip->tmode = 0x00;
+                       chip->tmode = SPI_TMOD_TR;
                else if (dws->rx)
-                       chip->tmode = 0x02;
+                       chip->tmode = SPI_TMOD_RO;
                else
-                       chip->tmode = 0x01;
+                       chip->tmode = SPI_TMOD_TO;
 
-               cr0 &= ~(0x3 << SPI_MODE_OFFSET);
+               cr0 &= ~SPI_TMOD_MASK;
                cr0 |= (chip->tmode << SPI_TMOD_OFFSET);
        }
 
@@ -704,9 +700,6 @@ static int dw_spi_setup(struct spi_device *spi)
                chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL);
                if (!chip)
                        return -ENOMEM;
-
-               chip->cs_control = null_cs_control;
-               chip->enable_dma = 0;
        }
 
        /*