[PATCH v2 2/4] thermal: of: Extend of-thermal.c to provide check if trip point is enabled

[Lukasz Majewski]

This patch extends the of-thermal.c to provide check if trip point is
enabled.

Signed-off-by: Lukasz Majewski <l.majewski@xxxxxxxxxxx>
---
Changes for v2:
- Replace int with bool
- Replace 1/0 with true/false
- Add check if data pointer is not NULL
- Add missing doxygen style comment for the function
---
 drivers/thermal/of-thermal.c   | 20 ++++++++++++++++++++
 drivers/thermal/thermal_core.h |  5 +++++
 2 files changed, 25 insertions(+)

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 7170822..336af7f 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -132,6 +132,26 @@ int of_thermal_get_ntrips(struct thermal_zone_device *tz)
 	return data->ntrips;
 }
 
+/**
+ * of_thermal_is_trip_en - function to check if trip point is enabled
+ *
+ * @tz:	pointer to a thermal zone
+ * @trip:	trip point to evaluate
+ *
+ * This function is responsible for checking if passed trip point is enabled
+ *
+ * Return: true if trip point is enabled, false otherwise
+ */
+bool of_thermal_is_trip_en(struct thermal_zone_device *tz, int trip)
+{
+	struct __thermal_zone *data = tz->devdata;
+
+	if (!data || trip >= data->ntrips || trip < 0)
+		return false;
+
+	return true;
+}
+
 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 c3c7b82..466208c 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -90,6 +90,7 @@ static inline void thermal_gov_user_space_unregister(void) {}
 int of_parse_thermal_zones(void);
 void of_thermal_destroy_zones(void);
 int of_thermal_get_ntrips(struct thermal_zone_device *);
+bool of_thermal_is_trip_en(struct thermal_zone_device *, int);
 #else
 static inline int of_parse_thermal_zones(void) { return 0; }
 static inline void of_thermal_destroy_zones(void) { }
@@ -97,6 +98,10 @@ static inline int of_thermal_get_ntrips(struct thermal_zone_device *)
 {
 	return 0;
 }
+static inline bool of_thermal_is_trip_en(struct thermal_zone_device *, int)
+{
+	return 0;
+}
 #endif
 
 #endif /* __THERMAL_CORE_H__ */
-- 
2.0.0.rc2

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