linux-kernel - Re: [PATCH v3 09/12] thermal/core: Register with the trip points

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Message-ID: <9ff53ef8-c15e-a287-bb7c-823b7ef9f67d@arm.com>
Date:   Mon, 4 Jul 2022 09:32:34 +0100
From:   Lukasz Luba <lukasz.luba@....com>
To:     Daniel Lezcano <daniel.lezcano@...exp.org>,
        daniel.lezcano@...aro.org
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        khilman@...libre.com, abailon@...libre.com,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>, rafael@...nel.org
Subject: Re: [PATCH v3 09/12] thermal/core: Register with the trip points



On 7/3/22 19:30, Daniel Lezcano wrote:
> As we added the thermal trip points structure in the thermal zone,
> let's extend the thermal zone register function to have the thermal
> trip structures as a parameter and store it in the 'trips' field of
> the thermal zone structure.
> 
> Cc: Alexandre Bailon <abailon@...libre.com>
> Cc: Kevin Hilman <khilman@...libre.com>
> Cc; Eduardo Valentin <eduval@...zon.com>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...exp.org>
> ---
>   drivers/thermal/thermal_core.c | 22 +++++++++++++++++-----
>   drivers/thermal/thermal_core.h |  4 ++--
>   include/linux/thermal.h        |  6 ++++++
>   3 files changed, 25 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 434a675da245..e865c41d2320 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1167,8 +1167,9 @@ static void thermal_set_delay_jiffies(unsigned long *delay_jiffies, int delay_ms
>   }
>   
>   /**
> - * thermal_zone_device_register() - register a new thermal zone device
> + * thermal_zone_device_register_with_trips() - register a new thermal zone device
>    * @type:	the thermal zone device type
> + * @trips:	a pointer to an array of thermal trips
>    * @ntrips:	the number of trip points the thermal zone support
>    * @mask:	a bit string indicating the writeablility of trip points
>    * @devdata:	private device data
> @@ -1191,10 +1192,10 @@ static void thermal_set_delay_jiffies(unsigned long *delay_jiffies, int delay_ms
>    * IS_ERR*() helpers.
>    */
>   struct thermal_zone_device *
> -thermal_zone_device_register(const char *type, int ntrips, int mask,
> -			     void *devdata, struct thermal_zone_device_ops *ops,
> -			     struct thermal_zone_params *tzp, int passive_delay,
> -			     int polling_delay)
> +thermal_zone_device_register_with_trips(const char *type, struct thermal_trip *trips, int ntrips, int mask,
> +					void *devdata, struct thermal_zone_device_ops *ops,
> +					struct thermal_zone_params *tzp, int passive_delay,
> +					int polling_delay)
>   {
>   	struct thermal_zone_device *tz;
>   	enum thermal_trip_type trip_type;
> @@ -1256,6 +1257,7 @@ thermal_zone_device_register(const char *type, int ntrips, int mask,
>   	tz->device.class = &thermal_class;
>   	tz->devdata = devdata;
>   	tz->ntrips = ntrips;
> +	tz->trips = trips;
>   
>   	thermal_set_delay_jiffies(&tz->passive_delay_jiffies, passive_delay);
>   	thermal_set_delay_jiffies(&tz->polling_delay_jiffies, polling_delay);
> @@ -1331,6 +1333,16 @@ thermal_zone_device_register(const char *type, int ntrips, int mask,
>   	kfree(tz);
>   	return ERR_PTR(result);
>   }
> +
> +struct thermal_zone_device *thermal_zone_device_register(const char *type, int ntrips, int mask,
> +							 void *devdata, struct thermal_zone_device_ops *ops,
> +							 struct thermal_zone_params *tzp, int passive_delay,
> +							 int polling_delay)
> +{
> +	return thermal_zone_device_register_with_trips(type, NULL, ntrips, mask,
> +						       devdata, ops, tzp,
> +						       passive_delay, polling_delay);
> +}
>   EXPORT_SYMBOL_GPL(thermal_zone_device_register);
>   
>   /**
> diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
> index 84e341c1e0fc..bbe3ec26d12e 100644
> --- a/drivers/thermal/thermal_core.h
> +++ b/drivers/thermal/thermal_core.h
> @@ -113,12 +113,12 @@ int thermal_build_list_of_policies(char *buf);
>   /* Helpers */
>   void thermal_zone_set_trips(struct thermal_zone_device *tz);
>   
> -static inline struct thermal_trip *thermal_zone_get_trips(struct thermal_zone *tz)
> +static inline struct thermal_trip *thermal_zone_get_trips(struct thermal_zone_device *tz)
>   {
>   	return tz->trips;
>   }
>   
> -static inline int thermal_zone_get_ntrips(struct thermal_zone *tz)
> +static inline int thermal_zone_get_ntrips(struct thermal_zone_device *tz)
>   {
>   	return tz->ntrips;
>   }
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index 3733e23b6359..8cbe237a92d0 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -379,8 +379,14 @@ void devm_thermal_zone_of_sensor_unregister(struct device *dev,
>   struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
>   		void *, struct thermal_zone_device_ops *,
>   		struct thermal_zone_params *, int, int);
> +
>   void thermal_zone_device_unregister(struct thermal_zone_device *);
>   
> +struct thermal_zone_device *
> +thermal_zone_device_register_with_trips(const char *, struct thermal_trip *, int, int,
> +					void *, struct thermal_zone_device_ops *,
> +					struct thermal_zone_params *, int, int);
> +
>   int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
>   				     struct thermal_cooling_device *,
>   				     unsigned long, unsigned long,

Apart from 'ntrips', which might be 'num_trips', this looks OK.