> -----Original Message-----
> From: R, Durgadoss
> Sent: Monday, August 27, 2012 7:28 AM
> To: lenb@xxxxxxxxxx; Zhang, Rui
> Cc: linux-acpi@xxxxxxxxxxxxxxx; eduardo.valentin@xxxxxx; R, Durgadoss
> Subject: [PATCHv2 03/14] Thermal: Add get trend, get instance API's to
> thermal_sys
> Importance: High
>
> 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_thermal_instance: obtain the instance corresponding
> to the given tz, cdev and the trip point.
>
> Signed-off-by: Durgadoss R <durgadoss.r@xxxxxxxxx>
> ---
> drivers/thermal/thermal_sys.c | 40
> ++++++++++++++++++++++++++++++++++++++++
> include/linux/thermal.h | 4 ++++
> 2 files changed, 44 insertions(+)
>
> diff --git a/drivers/thermal/thermal_sys.c
> b/drivers/thermal/thermal_sys.c index 0e71b00..5e141b5 100644
> --- a/drivers/thermal/thermal_sys.c
> +++ b/drivers/thermal/thermal_sys.c
> @@ -82,6 +82,46 @@ 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_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
> 8611e3e..32af124 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -185,6 +185,10 @@ 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
Coding style.
Thanks,
rui
> +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
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