diff mbox

spi: qup: Add SPI_CPOL configuration support

Message ID 1418725315-25621-1-git-send-email-iivanov@mm-sol.com (mailing list archive)
State Accepted
Commit 0667dd5f6c203480f2e8dcb3fc039ef723453a2f
Headers show

Commit Message

Ivan T. Ivanov Dec. 16, 2014, 10:21 a.m. UTC 
Device support SPI_CPOL, but driver have missed to add
support for this configuration.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
---
 drivers/spi/spi-qup.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

Comments

Mark Brown Dec. 29, 2014, 5:14 p.m. UTC | #1 
On Tue, Dec 16, 2014 at 12:21:55PM +0200, Ivan T. Ivanov wrote:
> Device support SPI_CPOL, but driver have missed to add
> support for this configuration.

Applied, thanks.
diff mbox

Patch

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index 390ed71..1c3329c 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)