From 6c23e5d43313a829fc4d07fa43a1f853f288b45f Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 1 Oct 2009 15:44:29 -0700 Subject: [PATCH] spi-imx: fix initial chipselect settings MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We can only setup the gpio pins in spi_setup time when we know the SPI_CS_HIGH setting. Signed-off-by: Sascha Hauer Signed-off-by: Uwe Kleine-König Cc: David Brownell Cc: Guennadi Liakhovetski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/spi/spi_imx.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c index a8f9bff529e..b91a5a8f6da 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; -- 2.39.5