[PATCH 2/4] thermal: of: implement .set_trips for device tree thermal zones

[Caesar Wang]

在 2016年04月28日 05:52, Eduardo Valentin 写道:
> On Mon, Apr 25, 2016 at 11:02:45AM +0800, Caesar Wang wrote:
>> From: Sascha Hauer <s.hauer at pengutronix.de>
>>
>> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
>> Signed-off-by: Caesar Wang <wxt at rock-chips.com>
>> Cc: Zhang Rui <rui.zhang at intel.com>
>> Cc: Eduardo Valentin <edubezval at gmail.com>
>> Cc: linux-pm at vger.kernel.org
>> ---
>>
>>   drivers/thermal/of-thermal.c | 12 ++++++++++++
>>   include/linux/thermal.h      |  4 ++++
>>   2 files changed, 16 insertions(+)
>>
>> diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
>> index b8e509c..8722e63 100644
>> --- a/drivers/thermal/of-thermal.c
>> +++ b/drivers/thermal/of-thermal.c
>> @@ -101,6 +101,17 @@ static int of_thermal_get_temp(struct thermal_zone_device *tz,
>>   	return data->ops->get_temp(data->sensor_data, temp);
>>   }
>>   
>> +static int of_thermal_set_trips(struct thermal_zone_device *tz,
>> +				int low, int high)
>> +{
>> +	struct __thermal_zone *data = tz->devdata;
>> +
>> +	if (!data->ops || !data->ops->set_trips)
>> +		return -EINVAL;
>> +
>> +	return data->ops->set_trips(data->sensor_data, low, high);
>> +}
>> +
>>   /**
>>    * of_thermal_get_ntrips - function to export number of available trip
>>    *			   points.
>> @@ -427,6 +438,7 @@ thermal_zone_of_add_sensor(struct device_node *zone,
>>   
>>   	tzd->ops->get_temp = of_thermal_get_temp;
>>   	tzd->ops->get_trend = of_thermal_get_trend;
>> +	tzd->ops->set_trips = of_thermal_set_trips;
>>   	tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
>>   	mutex_unlock(&tzd->lock);
>>   
>> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
>> index e258359..cb64866 100644
>> --- a/include/linux/thermal.h
>> +++ b/include/linux/thermal.h
>> @@ -336,12 +336,16 @@ struct thermal_genl_event {
>>    *
>>    * Optional:
>>    * @get_trend: a pointer to a function that reads the sensor temperature trend.
>> + * @@set_trips: a pointer to a function that sets a temperature window. When
>> + *		this window is left the driver must inform the thermal core via
>> + *              thermal_zone_device_update.
> Ok. We start to see some documentation and expectation being stated
> here. Nice. Please respin the comment on thermal core too, so drivers
> that dont use OF will also be aware of this feature and how to use them.

Okay, done

>
>>    * @set_emul_temp: a pointer to a function that sets sensor emulated
>>    *		   temperature.
>>    */
>>   struct thermal_zone_of_device_ops {
>>   	int (*get_temp)(void *, int *);
>>   	int (*get_trend)(void *, long *);
>> +	int (*set_trips)(void *, int, int);
>>   	int (*set_emul_temp)(void *, int);
>>   	int (*set_trip_temp)(void *, int, int);
>>   };
>> -- 
>> 1.9.1
>>
>
>

-- 
caesar wang | software engineer | wxt at rock-chip.com