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thermal: Add mode helpers 

Prepare for making the drivers not access tzd's private members.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
[staticize thermal_zone_device_set_mode()]
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200629122925.21729-7-andrzej.p@collabora.com
This commit is contained in:
Andrzej Pietrasiewicz 2020-06-29 14:29:20 +02:00 committed by Daniel Lezcano
parent 1ee14820fd
commit ac5d9ecc74
2 changed files with 66 additions and 0 deletions
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53
drivers/thermal/thermal_core.c
View File

@ -459,6 +459,59 @@ static void thermal_zone_device_reset(struct thermal_zone_device *tz)
thermal_zone_device_init(tz);
}
static int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
enum thermal_device_mode mode)
{
int ret = 0;
mutex_lock(&tz->lock);
/* do nothing if mode isn't changing */
if (mode == tz->mode) {
mutex_unlock(&tz->lock);
return ret;
}
if (tz->ops->set_mode)
ret = tz->ops->set_mode(tz, mode);
if (!ret)
tz->mode = mode;
mutex_unlock(&tz->lock);
thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
return ret;
}
int thermal_zone_device_enable(struct thermal_zone_device *tz)
{
return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_ENABLED);
}
EXPORT_SYMBOL_GPL(thermal_zone_device_enable);
int thermal_zone_device_disable(struct thermal_zone_device *tz)
{
return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_DISABLED);
}
EXPORT_SYMBOL_GPL(thermal_zone_device_disable);
int thermal_zone_device_is_enabled(struct thermal_zone_device *tz)
{
enum thermal_device_mode mode;
mutex_lock(&tz->lock);
mode = tz->mode;
mutex_unlock(&tz->lock);
return mode == THERMAL_DEVICE_ENABLED;
}
EXPORT_SYMBOL_GPL(thermal_zone_device_is_enabled);
void thermal_zone_device_update(struct thermal_zone_device *tz,
enum thermal_notify_event event)
{

13
include/linux/thermal.h
View File

@ -416,6 +416,9 @@ int thermal_zone_get_offset(struct thermal_zone_device *tz);
void thermal_cdev_update(struct thermal_cooling_device *);
void thermal_notify_framework(struct thermal_zone_device *, int);
int thermal_zone_device_enable(struct thermal_zone_device *tz);
int thermal_zone_device_disable(struct thermal_zone_device *tz);
int thermal_zone_device_is_enabled(struct thermal_zone_device *tz);
#else
static inline struct thermal_zone_device *thermal_zone_device_register(
const char *type, int trips, int mask, void *devdata,
@ -463,6 +466,16 @@ static inline void thermal_cdev_update(struct thermal_cooling_device *cdev)
static inline void thermal_notify_framework(struct thermal_zone_device *tz,
int trip)
{ }
static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
{ return -ENODEV; }
static inline int thermal_zone_device_disable(struct thermal_zone_device *tz)
{ return -ENODEV; }
static inline int
thermal_zone_device_is_enabled(struct thermal_zone_device *tz)
{ return -ENODEV; }
#endif /* CONFIG_THERMAL */
#endif /* __THERMAL_H__ */