diff options
| -rw-r--r-- | drivers/spi/spi-dw-dma.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/spi/spi-dw-dma.c b/drivers/spi/spi-dw-dma.c index ababb910b391..f19c092920a1 100644 --- a/drivers/spi/spi-dw-dma.c +++ b/drivers/spi/spi-dw-dma.c @@ -198,6 +198,20 @@ static irqreturn_t dw_spi_dma_transfer_handler(struct dw_spi *dws) return IRQ_HANDLED; } +static enum dma_slave_buswidth dw_spi_dma_convert_width(u8 n_bytes) +{ + switch (n_bytes) { + case 1: + return DMA_SLAVE_BUSWIDTH_1_BYTE; + case 2: + return DMA_SLAVE_BUSWIDTH_2_BYTES; + case 4: + return DMA_SLAVE_BUSWIDTH_4_BYTES; + default: + return DMA_SLAVE_BUSWIDTH_UNDEFINED; + } +} + static bool dw_spi_can_dma(struct spi_controller *master, struct spi_device *spi, struct spi_transfer *xfer) { @@ -206,16 +220,6 @@ static bool dw_spi_can_dma(struct spi_controller *master, return xfer->len > dws->fifo_len; } -static enum dma_slave_buswidth dw_spi_dma_convert_width(u8 n_bytes) -{ - if (n_bytes == 1) - return DMA_SLAVE_BUSWIDTH_1_BYTE; - else if (n_bytes == 2) - return DMA_SLAVE_BUSWIDTH_2_BYTES; - - return DMA_SLAVE_BUSWIDTH_UNDEFINED; -} - static int dw_spi_dma_wait(struct dw_spi *dws, unsigned int len, u32 speed) { unsigned long long ms; |