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iio: magnetometer: st_magn_spi: add OF capability to st_magn_spi

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Add device tree support for LIS3MDL and LSM303AGR magnetometer sensors

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2017-06-27 00:53:44 +02:00 committed by Jonathan Cameron
parent ff73e8611e
commit 65a687a22d
1 changed files with 25 additions and 0 deletions
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25
drivers/iio/magnetometer/st_magn_spi.c
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@ -18,6 +18,28 @@
#include <linux/iio/common/st_sensors_spi.h> #include <linux/iio/common/st_sensors_spi.h>
#include "st_magn.h" #include "st_magn.h"
#ifdef CONFIG_OF
/*
* For new single-chip sensors use <device_name> as compatible string.
* For old single-chip devices keep <device_name>-magn to maintain
* compatibility
*/
static const struct of_device_id st_magn_of_match[] = {
{
.compatible = "st,lis3mdl-magn",
.data = LIS3MDL_MAGN_DEV_NAME,
},
{
.compatible = "st,lsm303agr-magn",
.data = LSM303AGR_MAGN_DEV_NAME,
},
{}
};
MODULE_DEVICE_TABLE(of, st_magn_of_match);
#else
#define st_magn_of_match NULL
#endif
static int st_magn_spi_probe(struct spi_device *spi) static int st_magn_spi_probe(struct spi_device *spi)
{ {
struct iio_dev *indio_dev; struct iio_dev *indio_dev;
@ -30,6 +52,8 @@ static int st_magn_spi_probe(struct spi_device *spi)
mdata = iio_priv(indio_dev); mdata = iio_priv(indio_dev);
st_sensors_of_name_probe(&spi->dev, st_magn_of_match,
spi->modalias, sizeof(spi->modalias));
st_sensors_spi_configure(indio_dev, spi, mdata); st_sensors_spi_configure(indio_dev, spi, mdata);
err = st_magn_common_probe(indio_dev); err = st_magn_common_probe(indio_dev);
@ -57,6 +81,7 @@ MODULE_DEVICE_TABLE(spi, st_magn_id_table);
static struct spi_driver st_magn_driver = { static struct spi_driver st_magn_driver = {
.driver = { .driver = {
.name = "st-magn-spi", .name = "st-magn-spi",
.of_match_table = of_match_ptr(st_magn_of_match),
}, },
.probe = st_magn_spi_probe, .probe = st_magn_spi_probe,
.remove = st_magn_spi_remove, .remove = st_magn_spi_remove,