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Commit 6ee8a2f7 authored by Qipan Li's avatar Qipan Li Committed by Mark Brown
Browse files

spi: sirf: make GPIO chipselect function work well 



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: default avatarQipan Li <Qipan.Li@csr.com>
Signed-off-by: default avatarBarry Song <Baohua.Song@csr.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 625227a4

drivers/spi/spi-sirf.c

+10 −1
Original line number Diff line number Diff line
@@ -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;

		}

	}

}