From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Werner Subject: [PATCH] spi/spi-fsl-espi.c: Add spi cs polarity support Date: Mon, 7 Dec 2015 08:07:16 +0100 Message-ID: <20151207070657.GA25586@awelinux> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: , To: Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org Add CS polarity flag to be able to set the CS polarity via the DT property spi-cs-high. Signed-off-by: Andreas Werner --- drivers/spi/spi-fsl-espi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index c27124a..2dc70953 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -495,7 +495,7 @@ static int fsl_espi_setup(struct spi_device *spi) ®_base->csmode[spi->chip_select]); /* mask out bits we are going to set */ cs->hw_mode &= ~(CSMODE_CP_BEGIN_EDGECLK | CSMODE_CI_INACTIVEHIGH - | CSMODE_REV); + | CSMODE_REV | CSMODE_POL_1); if (spi->mode & SPI_CPHA) cs->hw_mode |= CSMODE_CP_BEGIN_EDGECLK; @@ -503,6 +503,8 @@ static int fsl_espi_setup(struct spi_device *spi) cs->hw_mode |= CSMODE_CI_INACTIVEHIGH; if (!(spi->mode & SPI_LSB_FIRST)) cs->hw_mode |= CSMODE_REV; + if (!(spi->mode & SPI_CS_HIGH)) + cs->hw_mode |= CSMODE_POL_1; /* Handle the loop mode */ loop_mode = mpc8xxx_spi_read_reg(®_base->mode); -- 2.6.2