From mboxrd@z Thu Jan 1 00:00:00 1970 From: 21cnbao@gmail.com (Barry Song) Date: Mon, 14 Apr 2014 14:29:59 +0800 Subject: [PATCH 3/5] spi: sirf: make GPIO chipselect function work well In-Reply-To: <1397457001-5266-1-git-send-email-21cnbao@gmail.com> References: <1397457001-5266-1-git-send-email-21cnbao@gmail.com> Message-ID: <1397457001-5266-4-git-send-email-21cnbao@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Qipan Li orignal GPIO chipslect is not standard because it don't take care to the chipselect signal: BITBANG_CS_ACTIVE and BITBANG_CS_INACTIVE. Signed-off-by: Qipan Li Signed-off-by: Barry Song --- drivers/spi/spi-sirf.c | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index 9b30743..67d8909 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -470,7 +470,16 @@ static void spi_sirfsoc_chipselect(struct spi_device *spi, int value) writel(regval, sspi->base + SIRFSOC_SPI_CTRL); } else { int gpio = sspi->chipselect[spi->chip_select]; - gpio_direction_output(gpio, spi->mode & SPI_CS_HIGH ? 0 : 1); + switch (value) { + case BITBANG_CS_ACTIVE: + gpio_direction_output(gpio, + spi->mode & SPI_CS_HIGH ? 1 : 0); + break; + case BITBANG_CS_INACTIVE: + gpio_direction_output(gpio, + spi->mode & SPI_CS_HIGH ? 0 : 1); + break; + } } } -- 1.7.5.4