[PATCH 3/7] iio:magn: introduce st_magn_multiread_bit() function

Denis Ciocca
2019-06-17T23:50:23Z

This function is introduced as a preparation for regmap usage.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
---
drivers/iio/magnetometer/st_magn.h | 1 +
drivers/iio/magnetometer/st_magn_core.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)

diff --git a/drivers/iio/magnetometer/st_magn.h b/drivers/iio/magnetometer/st_magn.h
index d69ef9b2a731..9a3c8b9525e2 100644
--- a/drivers/iio/magnetometer/st_magn.h
+++ b/drivers/iio/magnetometer/st_magn.h
@@ -22,6 +22,7 @@
#define LIS2MDL_MAGN_DEV_NAME "lis2mdl"
#define LSM9DS1_MAGN_DEV_NAME "lsm9ds1_magn"

+bool st_magn_multiread_bit(const char *name);
int st_magn_common_probe(struct iio_dev *indio_dev);
void st_magn_common_remove(struct iio_dev *indio_dev);

diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c
index 2f7a1dbcdeb3..2d8919eb5ada 100644
--- a/drivers/iio/magnetometer/st_magn_core.c
+++ b/drivers/iio/magnetometer/st_magn_core.c
@@ -470,6 +470,22 @@ static const struct iio_trigger_ops st_magn_trigger_ops = {
#define ST_MAGN_TRIGGER_OPS NULL
#endif

+/*
+ * st_magn_multiread_bit() - check if device requires multi-read bit.
+ * @name: device name buffer reference.
+ */
+bool st_magn_multiread_bit(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 false;
+
+ return st_magn_sensors_settings[index].multi_read_bit;
+}
+EXPORT_SYMBOL(st_magn_multiread_bit);
+
int st_magn_common_probe(struct iio_dev *indio_dev)
{
struct st_sensor_data *mdata = iio_priv(indio_dev);
--
2.22.0