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Commit bc7f9bbc authored by Michael Welling's avatar Michael Welling Committed by Mark Brown
Browse files

spi: omap2-mcspi: Add gpio_request and init CS 



If GPIO chip select is specified, request the GPIO in the setup function
and release it in the cleanup function.

Signed-off-by: default avatarMichael Welling <mwelling@ieee.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent b28cb941

drivers/spi/spi-omap2-mcspi.c

+10 −0
Original line number Diff line number Diff line
@@ -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,