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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-10-01 15:44:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-01 16:11:16 -0700 |
| commit | 6c23e5d43313a829fc4d07fa43a1f853f288b45f (patch) | |
| tree | b33f3517a211c04456d3c234ae07f4b512e7a841 /drivers/spi | |
| parent | 462d26b5d2f17b6258f33c4d1e3310089b006489 (diff) | |
| download | linux-stable-6c23e5d43313a829fc4d07fa43a1f853f288b45f.tar.gz linux-stable-6c23e5d43313a829fc4d07fa43a1f853f288b45f.tar.bz2 linux-stable-6c23e5d43313a829fc4d07fa43a1f853f288b45f.zip | |
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: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi_imx.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c index a8f9bff529e5..b91a5a8f6da6 100644 --- a/drivers/spi/spi_imx.c +++ b/drivers/spi/spi_imx.c @@ -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; |