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| author | Michael Hennerich <michael.hennerich@analog.com> | 2011-08-22 06:04:12 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-08-22 18:59:12 +0200 |
| commit | 6337de2204be3b7b40825a1d30de30e514e8947b (patch) | |
| tree | e76e4b6ba4460ed5e20d8ebdcfa91273f7c5cb5f /drivers/input/misc/ad714x-spi.c | |
| parent | Input: ad714xx-spi - force SPI bus into the default 8-bit mode (diff) | |
| download | linux-6337de2204be3b7b40825a1d30de30e514e8947b.tar.xz linux-6337de2204be3b7b40825a1d30de30e514e8947b.zip | |
Input: ad714x - fix endianness issues
Allow driver to be used on Big Endian boxes.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/misc/ad714x-spi.c')
| -rw-r--r-- | drivers/input/misc/ad714x-spi.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/input/misc/ad714x-spi.c b/drivers/input/misc/ad714x-spi.c index da83ac9bed7e..0c7f9488f5cb 100644 --- a/drivers/input/misc/ad714x-spi.c +++ b/drivers/input/misc/ad714x-spi.c @@ -6,7 +6,7 @@ * Licensed under the GPL-2 or later. */ -#include <linux/input.h> /* BUS_I2C */ +#include <linux/input.h> /* BUS_SPI */ #include <linux/module.h> #include <linux/spi/spi.h> #include <linux/pm.h> @@ -30,22 +30,28 @@ static int ad714x_spi_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(ad714x_spi_pm, ad714x_spi_suspend, ad714x_spi_resume); -static int ad714x_spi_read(struct device *dev, unsigned short reg, - unsigned short *data) +static int ad714x_spi_read(struct device *dev, + unsigned short reg, unsigned short *data) { struct spi_device *spi = to_spi_device(dev); - unsigned short tx = AD714x_SPI_CMD_PREFIX | AD714x_SPI_READ | reg; + unsigned short tx = cpu_to_be16(AD714x_SPI_CMD_PREFIX | + AD714x_SPI_READ | reg); + int ret; - return spi_write_then_read(spi, (u8 *)&tx, 2, (u8 *)data, 2); + ret = spi_write_then_read(spi, &tx, 2, data, 2); + + *data = be16_to_cpup(data); + + return ret; } -static int ad714x_spi_write(struct device *dev, unsigned short reg, - unsigned short data) +static int ad714x_spi_write(struct device *dev, + unsigned short reg, unsigned short data) { struct spi_device *spi = to_spi_device(dev); unsigned short tx[2] = { - AD714x_SPI_CMD_PREFIX | reg, - data + cpu_to_be16(AD714x_SPI_CMD_PREFIX | reg), + cpu_to_be16(data) }; return spi_write(spi, (u8 *)tx, 4); |