diff options
Diffstat (limited to 'drivers/spi/davinci_spi.c')
| -rw-r--r-- | drivers/spi/davinci_spi.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index 67f1e463c1f..9695f98b03b 100644 --- a/drivers/spi/davinci_spi.c +++ b/drivers/spi/davinci_spi.c @@ -211,16 +211,6 @@ static inline void clear_io_bits(void __iomem *addr, u32 bits) iowrite32(v, addr); } -static void davinci_spi_set_dma_req(const struct spi_device *spi, int enable) -{ - struct davinci_spi *davinci_spi = spi_master_get_devdata(spi->master); - - if (enable) - set_io_bits(davinci_spi->base + SPIINT, SPIINT_DMA_REQ_EN); - else - clear_io_bits(davinci_spi->base + SPIINT, SPIINT_DMA_REQ_EN); -} - /* * Interface to control the chip select signal */ @@ -414,8 +404,6 @@ static void davinci_spi_dma_rx_callback(unsigned lch, u16 ch_status, void *data) edma_clean_channel(davinci_spi_dma->dma_rx_channel); complete(&davinci_spi_dma->dma_rx_completion); - /* We must disable the DMA RX request */ - davinci_spi_set_dma_req(spi, 0); } static void davinci_spi_dma_tx_callback(unsigned lch, u16 ch_status, void *data) @@ -433,8 +421,6 @@ static void davinci_spi_dma_tx_callback(unsigned lch, u16 ch_status, void *data) edma_clean_channel(davinci_spi_dma->dma_tx_channel); complete(&davinci_spi_dma->dma_tx_completion); - /* We must disable the DMA TX request */ - davinci_spi_set_dma_req(spi, 0); } static int davinci_spi_request_dma(struct spi_device *spi) @@ -831,7 +817,7 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) edma_start(davinci_spi_dma->dma_rx_channel); edma_start(davinci_spi_dma->dma_tx_channel); - davinci_spi_set_dma_req(spi, 1); + set_io_bits(davinci_spi->base + SPIINT, SPIINT_DMA_REQ_EN); wait_for_completion_interruptible(&davinci_spi_dma->dma_tx_completion); wait_for_completion_interruptible(&davinci_spi_dma->dma_rx_completion); @@ -841,6 +827,8 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) dma_unmap_single(NULL, t->rx_dma, rx_buf_count, DMA_FROM_DEVICE); + clear_io_bits(davinci_spi->base + SPIINT, SPIINT_DMA_REQ_EN); + /* * Check for bit error, desync error,parity error,timeout error and * receive overflow errors |