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authorSascha Hauer <s.hauer@pengutronix.de>2016-02-24 09:20:26 +0100
committerMark Brown <broonie@kernel.org>2016-02-26 11:04:14 +0900
commitc008a800716256300c8a62e781a8897a8d3bce1e (patch)
treecb360864e69107536266a325fa63f362d3f1d0ce /drivers/spi/spi-imx.c
parent99f1cf1c0c2ccdfa251a55cd28e3004963bf6e1a (diff)
downloadlinux-c008a800716256300c8a62e781a8897a8d3bce1e.tar.bz2
spi: imx: initialize usedma earlier
The SoC specific config function does not know if DMA will be used or not. This information will be useful to configure the SPI controller correctly for DMA in following patches, so initialize the usedma variable before calling into the SoC specific config function. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-imx.c')
-rw-r--r--drivers/spi/spi-imx.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index a61b1b140523..5792918aa751 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -815,6 +815,11 @@ static int spi_imx_setupxfer(struct spi_device *spi,
spi_imx->tx = spi_imx_buf_tx_u32;
}
+ if (spi_imx_can_dma(spi_imx->bitbang.master, spi, t))
+ spi_imx->usedma = 1;
+ else
+ spi_imx->usedma = 0;
+
spi_imx->devtype_data->config(spi_imx, &config);
return 0;
@@ -1040,14 +1045,10 @@ static int spi_imx_transfer(struct spi_device *spi,
{
struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master);
- if (spi_imx->bitbang.master->can_dma &&
- spi_imx_can_dma(spi_imx->bitbang.master, spi, transfer)) {
- spi_imx->usedma = true;
+ if (spi_imx->usedma)
return spi_imx_dma_transfer(spi_imx, transfer);
- }
- spi_imx->usedma = false;
-
- return spi_imx_pio_transfer(spi, transfer);
+ else
+ return spi_imx_pio_transfer(spi, transfer);
}
static int spi_imx_setup(struct spi_device *spi)