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thermal/core: Add a thermal zone 'devdata' accessor

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The thermal zone device structure is exposed to the different drivers
and obviously they access the internals while that should be
restricted to the core thermal code.

In order to self-encapsulate the thermal core code, we need to prevent
the drivers accessing directly the thermal zone structure and provide
accessor functions to deal with.

Provide an accessor to the 'devdata' structure and make use of it in
the different drivers.

No functional changes intended.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Daniel Lezcano 2023-03-01 21:14:29 +01:00 committed by Rafael J. Wysocki
parent 0a3f9a6b02
commit a6ff3c0021
2 changed files with 13 additions and 0 deletions
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6
drivers/thermal/thermal_core.c
View File

@ -1377,6 +1377,12 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, int n
}
EXPORT_SYMBOL_GPL(thermal_zone_device_register);
void *thermal_zone_device_priv(struct thermal_zone_device *tzd)
{
return tzd->devdata;
}
EXPORT_SYMBOL_GPL(thermal_zone_device_priv);
/**
* thermal_zone_device_unregister - removes the registered thermal zone device
* @tz: the thermal zone device to remove

7
include/linux/thermal.h
View File

@ -365,6 +365,8 @@ thermal_zone_device_register_with_trips(const char *, struct thermal_trip *, int
void *, struct thermal_zone_device_ops *,
struct thermal_zone_params *, int, int);
void *thermal_zone_device_priv(struct thermal_zone_device *tzd);
int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *,
unsigned long, unsigned long,
@ -436,6 +438,11 @@ static inline int thermal_zone_get_offset(
struct thermal_zone_device *tz)
{ return -ENODEV; }
static inline void *thermal_zone_device_priv(struct thermal_zone_device *tz)
{
return NULL;
}
static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
{ return -ENODEV; }