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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2014-10-02 16:31:08 +0300
committerMark Brown <broonie@kernel.org>2014-10-02 17:06:26 +0100
commit2a285299446cccbaf9ba47403e8f2ce578cd1ad1 (patch)
treefa32c04d7af0a1685b36bc646f6c317912853362
parent15ee3be78b017ee9d697fe59d45cdfbb35d9fdeb (diff)
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>
-rw-r--r--drivers/spi/spi-dw-mid.c19
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;
}