spi: dw-mid: convert to use DMAengine wrappers

Instead of direct dereference to dmaengine callbacks we are going to use
DMAengine wrappers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 7 insertions, 12 deletions

diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c
index 7bdf93747e5f..a507add6231e 100644
--- a/drivers/spi/spi-dw-mid.c
+++ b/drivers/spi/spi-dw-mid.c
@@ -113,8 +113,7 @@ static void dw_spi_dma_done(void *arg)
 
 static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
 {
-        struct dma_async_tx_descriptor *txdesc = NULL, *rxdesc = NULL;
-        struct dma_chan *txchan, *rxchan;
+        struct dma_async_tx_descriptor *txdesc, *rxdesc;
         struct dma_slave_config txconf, rxconf;
         u16 dma_ctrl = 0;
 
@@ -132,8 +131,6 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
         }
 
         dws->dma_chan_done = 0;
-        txchan = dws->txchan;
-        rxchan = dws->rxchan;
 
         /* 2. Prepare the TX dma transfer */
         txconf.direction = DMA_MEM_TO_DEV;
@@ -143,14 +140,13 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
         txconf.dst_addr_width = dws->dma_width;
         txconf.device_fc = false;
 
-        txchan->device->device_control(txchan, DMA_SLAVE_CONFIG,
-                                       (unsigned long) &txconf);
+        dmaengine_slave_config(dws->txchan, &txconf);
 
         memset(&dws->tx_sgl, 0, sizeof(dws->tx_sgl));
         dws->tx_sgl.dma_address = dws->tx_dma;
         dws->tx_sgl.length = dws->len;
 
-        txdesc = dmaengine_prep_slave_sg(txchan,
+        txdesc = dmaengine_prep_slave_sg(dws->txchan,
                                 &dws->tx_sgl,
                                 1,
                                 DMA_MEM_TO_DEV,
@@ -166,14 +162,13 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
         rxconf.src_addr_width = dws->dma_width;
         rxconf.device_fc = false;
 
-        rxchan->device->device_control(rxchan, DMA_SLAVE_CONFIG,
-                                       (unsigned long) &rxconf);
+        dmaengine_slave_config(dws->rxchan, &rxconf);
 
         memset(&dws->rx_sgl, 0, sizeof(dws->rx_sgl));
         dws->rx_sgl.dma_address = dws->rx_dma;
         dws->rx_sgl.length = dws->len;
 
-        rxdesc = dmaengine_prep_slave_sg(rxchan,
+        rxdesc = dmaengine_prep_slave_sg(dws->rxchan,
                                 &dws->rx_sgl,
                                 1,
                                 DMA_DEV_TO_MEM,
@@ -182,8 +177,8 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
         rxdesc->callback_param = dws;
 
         /* rx must be started before tx due to spi instinct */
-        rxdesc->tx_submit(rxdesc);
-        txdesc->tx_submit(txdesc);
+        dmaengine_submit(rxdesc);
+        dmaengine_submit(txdesc);
         return 0;
 }