diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-11 09:30:50 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-11 09:30:50 -0700 |
commit | 5f47992491ffe2d5b2b4ea3556bc0f3c0ec9bc8b (patch) | |
tree | f43f81ab67d152c148bd3dfc1a0683d2c8306014 /drivers/spi/spi-imx.c | |
parent | 148e45dc87cb76ba89e80da264bc692cc91a5149 (diff) | |
parent | bf16200689118d19de1b8d2a3c314fc21f5dc7bb (diff) | |
download | linux-5f47992491ffe2d5b2b4ea3556bc0f3c0ec9bc8b.tar.bz2 |
Merge 4.6-rc3 into staging-next
This resolves a lot of merge issues with PAGE_CACHE_* changes, and an
iio driver merge issue.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/spi/spi-imx.c')
-rw-r--r-- | drivers/spi/spi-imx.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index e7a19be87c38..50769078e72e 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -211,11 +211,15 @@ static bool spi_imx_can_dma(struct spi_master *master, struct spi_device *spi, struct spi_transfer *transfer) { struct spi_imx_data *spi_imx = spi_master_get_devdata(master); - unsigned int bpw = transfer->bits_per_word; + unsigned int bpw; if (!master->dma_rx) return false; + if (!transfer) + return false; + + bpw = transfer->bits_per_word; if (!bpw) bpw = spi->bits_per_word; @@ -333,8 +337,9 @@ static void __maybe_unused mx51_ecspi_trigger(struct spi_imx_data *spi_imx) static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx, struct spi_imx_config *config) { - u32 ctrl = MX51_ECSPI_CTRL_ENABLE, cfg = 0; + u32 ctrl = MX51_ECSPI_CTRL_ENABLE; u32 clk = config->speed_hz, delay, reg; + u32 cfg = readl(spi_imx->base + MX51_ECSPI_CONFIG); /* * The hardware seems to have a race condition when changing modes. The @@ -358,13 +363,20 @@ static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx, if (config->mode & SPI_CPHA) cfg |= MX51_ECSPI_CONFIG_SCLKPHA(config->cs); + else + cfg &= ~MX51_ECSPI_CONFIG_SCLKPHA(config->cs); if (config->mode & SPI_CPOL) { cfg |= MX51_ECSPI_CONFIG_SCLKPOL(config->cs); cfg |= MX51_ECSPI_CONFIG_SCLKCTL(config->cs); + } else { + cfg &= ~MX51_ECSPI_CONFIG_SCLKPOL(config->cs); + cfg &= ~MX51_ECSPI_CONFIG_SCLKCTL(config->cs); } if (config->mode & SPI_CS_HIGH) cfg |= MX51_ECSPI_CONFIG_SSBPOL(config->cs); + else + cfg &= ~MX51_ECSPI_CONFIG_SSBPOL(config->cs); if (spi_imx->usedma) ctrl |= MX51_ECSPI_CTRL_SMC; |