提交 6c23e5d4 编写于 作者: S Sascha Hauer 提交者: Linus Torvalds

spi-imx: fix initial chipselect settings

We can only setup the gpio pins in spi_setup time when we know the
SPI_CS_HIGH setting.
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 462d26b5
......@@ -478,12 +478,18 @@ static int spi_imx_transfer(struct spi_device *spi,
static int spi_imx_setup(struct spi_device *spi)
{
struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master);
int gpio = spi_imx->chipselect[spi->chip_select];
if (!spi->bits_per_word)
spi->bits_per_word = 8;
pr_debug("%s: mode %d, %u bpw, %d hz\n", __func__,
spi->mode, spi->bits_per_word, spi->max_speed_hz);
if (gpio >= 0)
gpio_direction_output(gpio, spi->mode & SPI_CS_HIGH ? 0 : 1);
spi_imx_chipselect(spi, BITBANG_CS_INACTIVE);
return 0;
......@@ -532,7 +538,6 @@ static int __init spi_imx_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "can't get cs gpios");
goto out_master_put;
}
gpio_direction_output(spi_imx->chipselect[i], 1);
}
spi_imx->bitbang.chipselect = spi_imx_chipselect;
......
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