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SubjectRe: [PATCHv3 2/3] thermal: expose thermal_zone_get_temp API
On 14-04-2013 21:43, Zhang Rui wrote:
> On Fri, 2013-04-05 at 08:32 -0400, Eduardo Valentin wrote:
>> This patch exports the thermal_zone_get_temp API so that driver
>> writers can fetch temperature of thermal zones managed by other
>> drivers.
>>
>> Acked-by: Durgadoss R <durgadoss.r@intel.com>
>> Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
>
> refreshed the patch to modify drivers/thermal/thermal_core.c instead of
> drivers/thermal/thermal_sys.c and applied to thermal -next.

Thanks!

>
> thanks,
> rui
>
>> ---
>> drivers/thermal/thermal_sys.c | 20 +++++++++++++++++---
>> include/linux/thermal.h | 1 +
>> 2 files changed, 18 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
>> index e9b636b..83bfa0d 100644
>> --- a/drivers/thermal/thermal_sys.c
>> +++ b/drivers/thermal/thermal_sys.c
>> @@ -371,16 +371,28 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
>> monitor_thermal_zone(tz);
>> }
>>
>> -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
>> - unsigned long *temp)
>> +/**
>> + * thermal_zone_get_temp() - returns its the temperature of thermal zone
>> + * @tz: a valid pointer to a struct thermal_zone_device
>> + * @temp: a valid pointer to where to store the resulting temperature.
>> + *
>> + * When a valid thermal zone reference is passed, it will fetch its
>> + * temperature and fill @temp.
>> + *
>> + * Return: On success returns 0, an error code otherwise
>> + */
>> +int thermal_zone_get_temp(struct thermal_zone_device *tz, unsigned long *temp)
>> {
>> - int ret = 0;
>> + int ret = -EINVAL;
>> #ifdef CONFIG_THERMAL_EMULATION
>> int count;
>> unsigned long crit_temp = -1UL;
>> enum thermal_trip_type type;
>> #endif
>>
>> + if (IS_ERR_OR_NULL(tz))
>> + goto exit;
>> +
>> mutex_lock(&tz->lock);
>>
>> ret = tz->ops->get_temp(tz, temp);
>> @@ -404,8 +416,10 @@ static int thermal_zone_get_temp(struct thermal_zone_device *tz,
>> skip_emul:
>> #endif
>> mutex_unlock(&tz->lock);
>> +exit:
>> return ret;
>> }
>> +EXPORT_SYMBOL_GPL(thermal_zone_get_temp);
>>
>> static void update_temperature(struct thermal_zone_device *tz)
>> {
>> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
>> index 0cf9eb5..8eea86c 100644
>> --- a/include/linux/thermal.h
>> +++ b/include/linux/thermal.h
>> @@ -238,6 +238,7 @@ 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 *);
>> struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name);
>> +int thermal_zone_get_temp(struct thermal_zone_device *tz, unsigned long *temp);
>>
>> int thermal_zone_trend_get(struct thermal_zone_device *, int);
>> struct thermal_instance *thermal_instance_get(struct thermal_zone_device *,
>
>
>
>



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