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iio:magn: introduce st_magn_get_settings() function 

The function is introduced to retrieve magn device settings. It will be
used by probe in order to configure regmap.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
alistair/sunxi64-5.4-dsi
Denis Ciocca 2019-07-18 15:53:46 -07:00 committed by Jonathan Cameron
parent 2acca26bba
commit aa4e75c850
2 changed files with 19 additions and 0 deletions
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1
drivers/iio/magnetometer/st_magn.h
View File

@ -22,6 +22,7 @@
#define LIS2MDL_MAGN_DEV_NAME "lis2mdl"
#define LSM9DS1_MAGN_DEV_NAME "lsm9ds1_magn"
const struct st_sensor_settings *st_magn_get_settings(const char *name);
int st_magn_common_probe(struct iio_dev *indio_dev);
void st_magn_common_remove(struct iio_dev *indio_dev);

18
drivers/iio/magnetometer/st_magn_core.c
View File

@ -470,6 +470,24 @@ static const struct iio_trigger_ops st_magn_trigger_ops = {
#define ST_MAGN_TRIGGER_OPS NULL
#endif
/*
* st_magn_get_settings() - get sensor settings from device name
* @name: device name buffer reference.
*
* Return: valid reference on success, NULL otherwise.
*/
const struct st_sensor_settings *st_magn_get_settings(const char *name)
{
int index = st_sensors_get_settings_index(name,
st_magn_sensors_settings,
ARRAY_SIZE(st_magn_sensors_settings));
if (index < 0)
return NULL;
return &st_magn_sensors_settings[index];
}
EXPORT_SYMBOL(st_magn_get_settings);
int st_magn_common_probe(struct iio_dev *indio_dev)
{
struct st_sensor_data *mdata = iio_priv(indio_dev);