spi: rockchip: directly use direction constants

The dma direction for the tx and rx dma channels never
change, so just use the constants directly rather
than storing them in device data.
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-rockchip.c

@@ -164,7 +164,6 @@ enum rockchip_ssi_type {
 
 struct rockchip_spi_dma_data {
 	struct dma_chan *ch;
-	enum dma_transfer_direction direction;
 	dma_addr_t addr;
 };
 
@@ -451,7 +450,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
 
 	rxdesc = NULL;
 	if (rs->rx) {
-		rxconf.direction = rs->dma_rx.direction;
+		rxconf.direction = DMA_DEV_TO_MEM;
 		rxconf.src_addr = rs->dma_rx.addr;
 		rxconf.src_addr_width = rs->n_bytes;
 		rxconf.src_maxburst = 1;
@@ -460,7 +459,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
 		rxdesc = dmaengine_prep_slave_sg(
 				rs->dma_rx.ch,
 				rs->rx_sg.sgl, rs->rx_sg.nents,
-				rs->dma_rx.direction, DMA_PREP_INTERRUPT);
+				DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT);
 		if (!rxdesc)
 			return -EINVAL;
 
@@ -470,7 +469,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
 
 	txdesc = NULL;
 	if (rs->tx) {
-		txconf.direction = rs->dma_tx.direction;
+		txconf.direction = DMA_MEM_TO_DEV;
 		txconf.dst_addr = rs->dma_tx.addr;
 		txconf.dst_addr_width = rs->n_bytes;
 		txconf.dst_maxburst = rs->fifo_len / 2;
@@ -479,7 +478,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
 		txdesc = dmaengine_prep_slave_sg(
 				rs->dma_tx.ch,
 				rs->tx_sg.sgl, rs->tx_sg.nents,
-				rs->dma_tx.direction, DMA_PREP_INTERRUPT);
+				DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
 		if (!txdesc) {
 			if (rxdesc)
 				dmaengine_terminate_sync(rs->dma_rx.ch);
@@ -775,8 +774,6 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 	if (rs->dma_tx.ch && rs->dma_rx.ch) {
 		rs->dma_tx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_TXDR);
 		rs->dma_rx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_RXDR);
-		rs->dma_tx.direction = DMA_MEM_TO_DEV;
-		rs->dma_rx.direction = DMA_DEV_TO_MEM;
 
 		master->can_dma = rockchip_spi_can_dma;
 		master->dma_tx = rs->dma_tx.ch;