thermal: add new get_crit_temp callback

Add a new callback so that the generic thermal can get the critical trip point info of a thermal zone, which is needed for building the tempX_crit hwmon sysfs attribute. Signed-off-by: Zhang Rui <[email protected]> Acked-by: Jean Delvare <[email protected]> Signed-off-by: Len Brown <[email protected]>
redbrain17 · Apr 29, 2008 · 9ec732f · 9ec732f
1 parent 63c4ec9
commit 9ec732f
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diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
@@ -1012,6 +1012,18 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
 	return -EINVAL;
 }
 
+static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
+				unsigned long *temperature) {
+	struct acpi_thermal *tz = thermal->devdata;
+
+	if (tz->trips.critical.flags.valid) {
+		*temperature = KELVIN_TO_MILLICELSIUS(
+				tz->trips.critical.temperature);
+		return 0;
+	} else
+		return -EINVAL;
+}
+
 typedef int (*cb)(struct thermal_zone_device *, int,
 		  struct thermal_cooling_device *);
 static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
@@ -1103,6 +1115,7 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
 	.set_mode = thermal_set_mode,
 	.get_trip_type = thermal_get_trip_type,
 	.get_trip_temp = thermal_get_trip_temp,
+	.get_crit_temp = thermal_get_crit_temp,
 };
 
 static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
@@ -41,6 +41,7 @@ struct thermal_zone_device_ops {
 	int (*set_mode) (struct thermal_zone_device *, const char *);
 	int (*get_trip_type) (struct thermal_zone_device *, int, char *);
 	int (*get_trip_temp) (struct thermal_zone_device *, int, char *);
+	int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *);
 };
 
 struct thermal_cooling_device_ops {