| Message ID | 1344516365-7230-4-git-send-email-durgadoss.r@intel.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
Hello, On Thu, Aug 09, 2012 at 06:15:55PM +0530, Durgadoss R wrote: > This patch adds the following API's to thermal_sys.c, that > can be used by other Thermal drivers. > * get_tz_trend: obtain the trend of the given thermal zone > * get_cdev_by_name: obtain cdev pointer given its name > * get_thermal_instance: obtain the instance corresponding > to the given tz, cdev and the trip point. > > Signed-off-by: Durgadoss R <durgadoss.r@intel.com> > --- > drivers/thermal/thermal_sys.c | 59 +++++++++++++++++++++++++++++++++++++++++ > include/linux/thermal.h | 5 ++++ > 2 files changed, 64 insertions(+) > > diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c > index a0e20f9..998c16e 100644 > --- a/drivers/thermal/thermal_sys.c > +++ b/drivers/thermal/thermal_sys.c > @@ -80,6 +80,65 @@ static void release_idr(struct idr *idr, struct mutex *lock, int id) > mutex_unlock(lock); > } > > +int get_tz_trend(struct thermal_zone_device *tz, int trip) > +{ > + enum thermal_trend trend; > + > + if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) { > + if (tz->temperature > tz->last_temperature) > + trend = THERMAL_TREND_RAISING; > + else if (tz->temperature < tz->last_temperature) > + trend = THERMAL_TREND_DROPPING; > + else > + trend = THERMAL_TREND_STABLE; > + } > + > + return trend; > +} > +EXPORT_SYMBOL(get_tz_trend); You may want to reuse the above function inside thermal_zone_trip_update(). > + > +struct thermal_cooling_device *get_cdev_by_name(const char *name) > +{ > + struct thermal_cooling_device *pos; > + struct thermal_cooling_device *target_cdev = NULL; > + > + mutex_lock(&thermal_list_lock); > + > + list_for_each_entry(pos, &thermal_cdev_list, node) { > + if (!strcmp(pos->type, name)) { strncmp? > + target_cdev = pos; > + break; > + } > + } > + mutex_unlock(&thermal_list_lock); > + > + return target_cdev; > +} > +EXPORT_SYMBOL(get_cdev_by_name); > + > +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz, > + struct thermal_cooling_device *cdev, int trip) > +{ > + struct thermal_instance *pos = NULL; > + struct thermal_instance *target_instance = NULL; > + > + mutex_lock(&tz->lock); > + mutex_lock(&cdev->lock); > + > + list_for_each_entry(pos, &tz->thermal_instances, tz_node) { > + if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) { > + target_instance = pos; > + break; > + } > + } > + > + mutex_unlock(&cdev->lock); > + mutex_unlock(&tz->lock); > + > + return target_instance; > +} > +EXPORT_SYMBOL(get_thermal_instance); > + > /* sys I/F for thermal zone */ > > #define to_thermal_zone(_dev) \ > diff --git a/include/linux/thermal.h b/include/linux/thermal.h > index f25df23..757a007 100644 > --- a/include/linux/thermal.h > +++ b/include/linux/thermal.h > @@ -208,6 +208,11 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, > const struct thermal_cooling_device_ops *); > void thermal_cooling_device_unregister(struct thermal_cooling_device *); > > +int get_tz_trend(struct thermal_zone_device *, int); > +struct thermal_cooling_device *get_cdev_by_name(const char *); > +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, > + struct thermal_cooling_device *, int); > + > #ifdef CONFIG_NET > extern int thermal_generate_netlink_event(u32 orig, enum events event); > #else > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index a0e20f9..998c16e 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -80,6 +80,65 @@ static void release_idr(struct idr *idr, struct mutex *lock, int id) mutex_unlock(lock); } +int get_tz_trend(struct thermal_zone_device *tz, int trip) +{ + enum thermal_trend trend; + + if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) { + if (tz->temperature > tz->last_temperature) + trend = THERMAL_TREND_RAISING; + else if (tz->temperature < tz->last_temperature) + trend = THERMAL_TREND_DROPPING; + else + trend = THERMAL_TREND_STABLE; + } + + return trend; +} +EXPORT_SYMBOL(get_tz_trend); + +struct thermal_cooling_device *get_cdev_by_name(const char *name) +{ + struct thermal_cooling_device *pos; + struct thermal_cooling_device *target_cdev = NULL; + + mutex_lock(&thermal_list_lock); + + list_for_each_entry(pos, &thermal_cdev_list, node) { + if (!strcmp(pos->type, name)) { + target_cdev = pos; + break; + } + } + mutex_unlock(&thermal_list_lock); + + return target_cdev; +} +EXPORT_SYMBOL(get_cdev_by_name); + +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz, + struct thermal_cooling_device *cdev, int trip) +{ + struct thermal_instance *pos = NULL; + struct thermal_instance *target_instance = NULL; + + mutex_lock(&tz->lock); + mutex_lock(&cdev->lock); + + list_for_each_entry(pos, &tz->thermal_instances, tz_node) { + if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) { + target_instance = pos; + break; + } + } + + mutex_unlock(&cdev->lock); + mutex_unlock(&tz->lock); + + return target_instance; +} +EXPORT_SYMBOL(get_thermal_instance); + /* sys I/F for thermal zone */ #define to_thermal_zone(_dev) \ diff --git a/include/linux/thermal.h b/include/linux/thermal.h index f25df23..757a007 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -208,6 +208,11 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); +int get_tz_trend(struct thermal_zone_device *, int); +struct thermal_cooling_device *get_cdev_by_name(const char *); +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, + struct thermal_cooling_device *, int); + #ifdef CONFIG_NET extern int thermal_generate_netlink_event(u32 orig, enum events event); #else
This patch adds the following API's to thermal_sys.c, that can be used by other Thermal drivers. * get_tz_trend: obtain the trend of the given thermal zone * get_cdev_by_name: obtain cdev pointer given its name * get_thermal_instance: obtain the instance corresponding to the given tz, cdev and the trip point. Signed-off-by: Durgadoss R <durgadoss.r@intel.com> --- drivers/thermal/thermal_sys.c | 59 +++++++++++++++++++++++++++++++++++++++++ include/linux/thermal.h | 5 ++++ 2 files changed, 64 insertions(+)