diff mbox series

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

Message ID 20190617234943.10669-4-denis.ciocca@st.com (mailing list archive)
State New, archived
Headers show
Series iio:st_sensors: make use of regmap API | expand

Commit Message

Denis CIOCCA June 17, 2019, 11:49 p.m. UTC 
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 mbox series

Patch

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);