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spi: dw: Refactor mid_spi_dma_setup() to separate DMA and IRQ config

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It's better to understand what bits are set for DMA and for IRQ handling
in mid_spi_dma_setup() if they are grouped accordingly. Thus,
refactor mid_spi_dma_setup() to separate DMA and IRQ configuration.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200529183150.44149-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andy Shevchenko 2020-05-29 21:31:50 +03:00 committed by Mark Brown
parent b3f82dc26c
commit 3d7db0f11c
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 6 additions and 6 deletions
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12
drivers/spi/spi-dw-dma.c
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@ -375,17 +375,17 @@ static int dw_spi_dma_setup(struct dw_spi *dws, struct spi_transfer *xfer)
dw_writel(dws, DW_SPI_DMARDLR, dws->rxburst - 1);
dw_writel(dws, DW_SPI_DMATDLR, dws->fifo_len - dws->txburst);
if (xfer->tx_buf) {
if (xfer->tx_buf)
dma_ctrl |= SPI_DMA_TDMAE;
imr |= SPI_INT_TXOI;
}
if (xfer->rx_buf) {
if (xfer->rx_buf)
dma_ctrl |= SPI_DMA_RDMAE;
imr |= SPI_INT_RXUI | SPI_INT_RXOI;
}
dw_writel(dws, DW_SPI_DMACR, dma_ctrl);
/* Set the interrupt mask */
if (xfer->tx_buf)
imr |= SPI_INT_TXOI;
if (xfer->rx_buf)
imr |= SPI_INT_RXUI | SPI_INT_RXOI;
spi_umask_intr(dws, imr);
reinit_completion(&dws->dma_completion);