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authorZhang Rui <rui.zhang@intel.com>2012-11-22 15:45:02 +0800
committerZhang Rui <rui.zhang@intel.com>2013-01-04 15:22:37 +0800
commitb8bb6cb999858043489c1ddef08eed2127559169 (patch)
treec8a40b5a995a63355da9177e87b16ba015eefbab /drivers/thermal/step_wise.c
parent3dbfff3dfe6714aeefb615c65bec0800dc5a4c51 (diff)
downloadlinux-linaro-stable-b8bb6cb999858043489c1ddef08eed2127559169.tar.gz
step_wise: Unify the code for both throttle and dethrottle
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal/step_wise.c')
-rw-r--r--drivers/thermal/step_wise.c70
1 files changed, 25 insertions, 45 deletions
diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
index f45dd0f768f0..407cde3211c1 100644
--- a/drivers/thermal/step_wise.c
+++ b/drivers/thermal/step_wise.c
@@ -99,52 +99,14 @@ static void update_passive_instance(struct thermal_zone_device *tz,
tz->passive += value;
}
-static void update_instance_for_throttle(struct thermal_zone_device *tz,
- int trip, enum thermal_trip_type trip_type,
- enum thermal_trend trend)
-{
- struct thermal_instance *instance;
-
- list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
- if (instance->trip != trip)
- continue;
-
- instance->target = get_target_state(instance, trend, true);
-
- /* Activate a passive thermal instance */
- if (instance->target == THERMAL_NO_TARGET)
- update_passive_instance(tz, trip_type, 1);
-
- instance->cdev->updated = false; /* cdev needs update */
- }
-}
-
-static void update_instance_for_dethrottle(struct thermal_zone_device *tz,
- int trip, enum thermal_trip_type trip_type,
- enum thermal_trend trend)
-{
- struct thermal_instance *instance;
-
- list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
- if (instance->trip != trip ||
- instance->target == THERMAL_NO_TARGET)
- continue;
-
- instance->target = get_target_state(instance, trend, false);
-
- /* Deactivate a passive thermal instance */
- if (instance->target == THERMAL_NO_TARGET)
- update_passive_instance(tz, trip_type, -1);
-
- instance->cdev->updated = false; /* cdev needs update */
- }
-}
-
static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
{
long trip_temp;
enum thermal_trip_type trip_type;
enum thermal_trend trend;
+ struct thermal_instance *instance;
+ bool throttle = false;
+ int old_target;
if (trip == THERMAL_TRIPS_NONE) {
trip_temp = tz->forced_passive;
@@ -156,12 +118,30 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
trend = get_tz_trend(tz, trip);
+ if (tz->temperature >= trip_temp)
+ throttle = true;
+
mutex_lock(&tz->lock);
- if (tz->temperature >= trip_temp)
- update_instance_for_throttle(tz, trip, trip_type, trend);
- else
- update_instance_for_dethrottle(tz, trip, trip_type, trend);
+ list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
+ if (instance->trip != trip)
+ continue;
+
+ old_target = instance->target;
+ instance->target = get_target_state(instance, trend, throttle);
+
+ /* Activate a passive thermal instance */
+ if (old_target == THERMAL_NO_TARGET &&
+ instance->target != THERMAL_NO_TARGET)
+ update_passive_instance(tz, trip_type, 1);
+ /* Deactivate a passive thermal instance */
+ else if (old_target != THERMAL_NO_TARGET &&
+ instance->target == THERMAL_NO_TARGET)
+ update_passive_instance(tz, trip_type, -1);
+
+
+ instance->cdev->updated = false; /* cdev needs update */
+ }
mutex_unlock(&tz->lock);
}