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| author |   Ivan T. Ivanov <iivanov@mm-sol.com> | 2014-12-16 12:21:55 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2014-12-29 17:14:21 +0000 |
| commit | 0667dd5f6c203480f2e8dcb3fc039ef723453a2f (patch) | |
| tree | 7184c21dea2e5e74f21ae026fddbb9c208b601e0 /drivers/spi/spi-qup.c | |
| parent | Linux 3.19-rc1 (diff) | |
| download | linux-dev-0667dd5f6c203480f2e8dcb3fc039ef723453a2f.tar.xz linux-dev-0667dd5f6c203480f2e8dcb3fc039ef723453a2f.zip | |
spi: qup: Add SPI_CPOL configuration support
Device support SPI_CPOL, but driver have missed to add
support for this configuration.
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-qup.c')
| -rw-r--r-- | drivers/spi/spi-qup.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c index e7fb5a0d2e8d..ff9cdbdb6672 100644 --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -337,7 +337,7 @@ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id) static int spi_qup_io_config(struct spi_device *spi, struct spi_transfer *xfer) { struct spi_qup *controller = spi_master_get_devdata(spi->master); - u32 config, iomode, mode; + u32 config, iomode, mode, control; int ret, n_words, w_size; if (spi->mode & SPI_LOOP && xfer->len > controller->in_fifo_sz) { @@ -392,6 +392,15 @@ static int spi_qup_io_config(struct spi_device *spi, struct spi_transfer *xfer) writel_relaxed(iomode, controller->base + QUP_IO_M_MODES); + control = readl_relaxed(controller->base + SPI_IO_CONTROL); + + if (spi->mode & SPI_CPOL) + control |= SPI_IO_C_CLK_IDLE_HIGH; + else + control &= ~SPI_IO_C_CLK_IDLE_HIGH; + + writel_relaxed(control, controller->base + SPI_IO_CONTROL); + config = readl_relaxed(controller->base + SPI_CONFIG); if (spi->mode & SPI_LOOP) |