This patch extends the of-thermal.c to provide information about number of
available trip points.
Signed-off-by: Lukasz Majewski <l.majew...@samsung.com>
---
Changes for v3:
- Exporting of_thermal_get_ntrips symbol as a GPL
- Fix build error when CONFIG_THERMAL_OF is disabled
Changes for v2:
- Provide detailed (doxygen like) description of the of_thermal_get_ntrips()
method
- Check for data pointer not being NULL
---
drivers/thermal/of-thermal.c | 21 +++++++++++++++++++++
drivers/thermal/thermal_core.h | 5 +++++
2 files changed, 26 insertions(+)
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index b7982f0..7facd23 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -112,6 +112,27 @@ static int of_thermal_get_temp(struct thermal_zone_device
*tz,
return data->ops->get_temp(data->sensor_data, temp);
}
+/**
+ * of_thermal_get_ntrips - function to export number of available trip
+ * points.
+ * @tz: pointer to a thermal zone
+ *
+ * This function is a globally visible wrapper to get number of trip points
+ * stored in the local struct __thermal_zone
+ *
+ * Return: number of available trip points, -ENODEV when data not available
+ */
+int of_thermal_get_ntrips(struct thermal_zone_device *tz)
+{
+ struct __thermal_zone *data = tz->devdata;
+
+ if (!data || IS_ERR(data))
+ return -ENODEV;
+
+ return data->ntrips;
+}
+EXPORT_SYMBOL_GPL(of_thermal_get_ntrips);
+
static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
enum thermal_trend *trend)
{
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index d15d243..1cc5041 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -89,9 +89,14 @@ static inline void thermal_gov_user_space_unregister(void) {}
#ifdef CONFIG_THERMAL_OF
int of_parse_thermal_zones(void);
void of_thermal_destroy_zones(void);
+int of_thermal_get_ntrips(struct thermal_zone_device *);
#else
static inline int of_parse_thermal_zones(void) { return 0; }
static inline void of_thermal_destroy_zones(void) { }
+static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz)
+{
+ return 0;
+}
#endif
#endif /* __THERMAL_CORE_H__ */
--
2.0.0.rc2
--
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