If GPIO chip select is specified, request the GPIO in the setup function and release it in the cleanup function.
Signed-off-by: Michael Welling <[email protected]> --- v2: Adds gpio_free to cleanup function. Broken out of patch series because the other patch in the series was applied. commit b28cb9414db9f8e42ac18c9e360e4e99cda42489 This patch applies on top of that one. drivers/spi/spi-omap2-mcspi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 3ac06ad..90cf7e7 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -35,6 +35,7 @@ #include <linux/gcd.h> #include <linux/spi/spi.h> +#include <linux/gpio.h> #include <linux/platform_data/spi-omap2-mcspi.h> @@ -1011,6 +1012,12 @@ static int omap2_mcspi_setup(struct spi_device *spi) return ret; } + if (gpio_is_valid(spi->cs_gpio)) { + if (gpio_request(spi->cs_gpio, dev_name(&spi->dev)) == 0) + gpio_direction_output(spi->cs_gpio, + !(spi->mode & SPI_CS_HIGH)); + } + ret = pm_runtime_get_sync(mcspi->dev); if (ret < 0) return ret; @@ -1050,6 +1057,9 @@ static void omap2_mcspi_cleanup(struct spi_device *spi) mcspi_dma->dma_tx = NULL; } } + + if (gpio_is_valid(spi->cs_gpio)) + gpio_free(spi->cs_gpio); } static int omap2_mcspi_work_one(struct omap2_mcspi *mcspi, -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
