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authorZhang, Rui <rui.zhang@intel.com>2008-04-10 16:13:10 +0800
committerLen Brown <len.brown@intel.com>2008-04-29 02:45:49 -0400
commit9ec732ff80b7e8a9096666f78ae584d3b393bc84 (patch)
treefae3a8b26c555521ac26992b8c3d897b07921cd5 /drivers/acpi
parent63c4ec905d63834a97ec7dbbf0a2ec89ef5872be (diff)
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 <rui.zhang@intel.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/thermal.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 766bd25d337..ec707ed1a70 100644
--- 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)