diff options
| author | Trent Piepho <tpiepho@impinj.com> | 2017-10-31 12:49:06 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-11-10 21:28:11 +0000 |
| commit | ffd4db9e10fdb431b559af052c17015682bbe2aa (patch) | |
| tree | 62b7bc35640b3c34167fbb7e58534c7fe0a08543 | |
| parent | 4e21791e741c7c1b962c4a8327529f52310b9aac (diff) | |
| download | linux-ffd4db9e10fdb431b559af052c17015682bbe2aa.tar.bz2 | |
spi: imx: Don't require platform data chipselect array
If the array is not present, assume all chip selects are native. This
is the standard behavior for SPI masters configured via the device
tree and the behavior of this driver as well when it is configured via
device tree.
This reduces platform data vs DT differences and allows most of the
platform data based boards to remove their chip select arrays.
CC: Shawn Guo <shawnguo@kernel.org>
CC: Sascha Hauer <kernel@pengutronix.de>
CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Mark Brown <broonie@kernel.org>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/spi/spi-imx.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index fdbbdac66839..79ddefe4180d 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -1526,13 +1526,15 @@ static int spi_imx_probe(struct platform_device *pdev) /* Get number of chip selects, either platform data or OF */ if (mxc_platform_info) { master->num_chipselect = mxc_platform_info->num_chipselect; - master->cs_gpios = devm_kzalloc(&master->dev, - sizeof(int) * master->num_chipselect, GFP_KERNEL); - if (!master->cs_gpios) - return -ENOMEM; - - for (i = 0; i < master->num_chipselect; i++) - master->cs_gpios[i] = mxc_platform_info->chipselect[i]; + if (mxc_platform_info->chipselect) { + master->cs_gpios = devm_kzalloc(&master->dev, + sizeof(int) * master->num_chipselect, GFP_KERNEL); + if (!master->cs_gpios) + return -ENOMEM; + + for (i = 0; i < master->num_chipselect; i++) + master->cs_gpios[i] = mxc_platform_info->chipselect[i]; + } } else { u32 num_cs; |