[5/7] iio:pressure: introduce st_pressure_multiread_bit() function

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 <[e-mail]>
---
 drivers/iio/pressure/st_pressure.h      |  1 +
 drivers/iio/pressure/st_pressure_core.c | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

Patch

diff --git a/drivers/iio/pressure/st_pressure.h b/drivers/iio/pressure/st_pressure.h
index 6a720cfb5686..c4b28dab34d8 100644
--- a/drivers/iio/pressure/st_pressure.h
+++ b/drivers/iio/pressure/st_pressure.h
@@ -41,6 +41,7 @@  static const struct st_sensors_platform_data default_press_pdata = {
 	.drdy_int_pin = 1,
 };
 
+bool st_press_multiread_bit(const char *name);
 int st_press_common_probe(struct iio_dev *indio_dev);
 void st_press_common_remove(struct iio_dev *indio_dev);
 
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index b960e76f7dfd..fb3bfaa00e85 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -664,6 +664,22 @@  static const struct iio_trigger_ops st_press_trigger_ops = {
 #define ST_PRESS_TRIGGER_OPS NULL
 #endif
 
+/*
+ * st_press_multiread_bit() - check if device requires multi-read bit.
+ * @name: device name buffer reference.
+ */
+bool st_press_multiread_bit(const char *name)
+{
+	int index = st_sensors_get_settings_index(name,
+					st_press_sensors_settings,
+					ARRAY_SIZE(st_press_sensors_settings));
+	if (index < 0)
+		return false;
+
+	return st_press_sensors_settings[index].multi_read_bit;
+}
+EXPORT_SYMBOL(st_press_multiread_bit);
+
 int st_press_common_probe(struct iio_dev *indio_dev)
 {
 	struct st_sensor_data *press_data = iio_priv(indio_dev);