From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mark Brown <broonie@kernel.org>, linux-spi@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v2 2/2] spi: dw: Refactor mid_spi_dma_setup() to separate DMA and IRQ config
Date: Fri, 29 May 2020 21:31:50 +0300 [thread overview]
Message-ID: <20200529183150.44149-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20200529183150.44149-1-andriy.shevchenko@linux.intel.com>
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>
---
v2: rebased against latest spi/for-next
drivers/spi/spi-dw-dma.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/spi/spi-dw-dma.c b/drivers/spi/spi-dw-dma.c
index 53d5257662e8..5986c520b196 100644
--- a/drivers/spi/spi-dw-dma.c
+++ b/drivers/spi/spi-dw-dma.c
@@ -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);
--
2.26.2
next prev parent reply other threads:[~2020-05-29 18:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 18:31 [PATCH v2 1/2] spi: dw: Make DMA request line assignments explicit for Intel Medfield Andy Shevchenko
2020-05-29 18:31 ` Andy Shevchenko [this message]
2020-05-29 18:40 ` Serge Semin
2020-05-29 18:49 ` Andy Shevchenko
2020-05-29 19:04 ` Serge Semin
2020-05-29 19:21 ` Andy Shevchenko
2020-05-29 19:52 ` Mark Brown
2020-06-01 12:00 ` Serge Semin
2020-05-29 21:06 ` Mark Brown
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