iio:accel: introduce st_accel_get_settings() function

The function is introduced to retrieve accel 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>

2 files changed, 19 insertions, 0 deletions

diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index 979ab9679b99..af09943f38c9 100644
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -68,6 +68,7 @@ static const struct st_sensors_platform_data default_accel_pdata = {
         .drdy_int_pin = 1,
 };
 
+const struct st_sensor_settings *st_accel_get_settings(const char *name);
 int st_accel_common_probe(struct iio_dev *indio_dev);
 void st_accel_common_remove(struct iio_dev *indio_dev);
 
diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index e02b79931979..6fc490ffef7e 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -1147,6 +1147,24 @@ out:
 #endif
 }
 
+/*
+ * st_accel_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_accel_get_settings(const char *name)
+{
+        int index = st_sensors_get_settings_index(name,
+                                        st_accel_sensors_settings,
+                                        ARRAY_SIZE(st_accel_sensors_settings));
+        if (index < 0)
+                return NULL;
+
+        return &st_accel_sensors_settings[index];
+}
+EXPORT_SYMBOL(st_accel_get_settings);
+
 int st_accel_common_probe(struct iio_dev *indio_dev)
 {
         struct st_sensor_data *adata = iio_priv(indio_dev);