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authorFabien Parent <fparent@baylibre.com>2017-02-23 19:01:57 +0100
committerMark Brown <broonie@kernel.org>2017-03-07 15:10:25 +0100
commit3e2e1258443ea97e40dfb4a3cf15108d17939066 (patch)
tree33272006c2169753756f74def8702794ad8f9ab7 /drivers/spi
parent8aedbf580d21121d2a032e4c8ea12d8d2d85e275 (diff)
spi: davinci: enable DMA when channels are defined in DT
When booting with DT the SPI driver is always using the SPI_IO_TYPE_INTR mode to transfer data even if DMA channels are defined in the DT. This commit changes the behaviour to select the SPI_IO_TYPE_DMA mode if DMA channels are defined in the DT and will keep SPI_IO_TYPE_INTR if the channels are not defined in it. Signed-off-by: Fabien Parent <fparent@baylibre.com> Signed-off-by: Frode Isaksen <fisaksen@baylibre.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-davinci.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index 164cc719be54..1e24395a04f2 100644
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -389,6 +389,7 @@ static int davinci_spi_of_setup(struct spi_device *spi)
{
struct davinci_spi_config *spicfg = spi->controller_data;
struct device_node *np = spi->dev.of_node;
+ struct davinci_spi *dspi = spi_master_get_devdata(spi->master);
u32 prop;
if (spicfg == NULL && np) {
@@ -400,6 +401,9 @@ static int davinci_spi_of_setup(struct spi_device *spi)
if (!of_property_read_u32(np, "ti,spi-wdelay", &prop))
spicfg->wdelay = (u8)prop;
spi->controller_data = spicfg;
+
+ if (dspi->dma_rx && dspi->dma_tx)
+ spicfg->io_type = SPI_IO_TYPE_DMA;
}
return 0;