Commit 2a285299 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Mark Brown
Browse files

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: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 15ee3be7

drivers/spi/spi-dw-mid.c

+7 −12
Original line number Diff line number Diff line
@@ -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;

}