Commit c973c3bc authored by Javi Merino's avatar Javi Merino Committed by Eduardo Valentin

thermal: Add a function to get the minimum power

The thermal core already has a function to get the maximum power of a
cooling device: power_actor_get_max_power().  Add a function to get the
minimum power of a cooling device.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Reviewed-by: default avatarDaniel Kurtz <djkurtz@chromium.org>
Signed-off-by: default avatarJavi Merino <javi.merino@arm.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent eba4f88d
...@@ -1012,6 +1012,34 @@ int power_actor_get_max_power(struct thermal_cooling_device *cdev, ...@@ -1012,6 +1012,34 @@ int power_actor_get_max_power(struct thermal_cooling_device *cdev,
return cdev->ops->state2power(cdev, tz, 0, max_power); return cdev->ops->state2power(cdev, tz, 0, max_power);
} }
/**
* power_actor_get_min_power() - get the mainimum power that a cdev can consume
* @cdev: pointer to &thermal_cooling_device
* @tz: a valid thermal zone device pointer
* @min_power: pointer in which to store the minimum power
*
* Calculate the minimum power consumption in milliwatts that the
* cooling device can currently consume and store it in @min_power.
*
* Return: 0 on success, -EINVAL if @cdev doesn't support the
* power_actor API or -E* on other error.
*/
int power_actor_get_min_power(struct thermal_cooling_device *cdev,
struct thermal_zone_device *tz, u32 *min_power)
{
unsigned long max_state;
int ret;
if (!cdev_is_power_actor(cdev))
return -EINVAL;
ret = cdev->ops->get_max_state(cdev, &max_state);
if (ret)
return ret;
return cdev->ops->state2power(cdev, tz, max_state, min_power);
}
/** /**
* power_actor_set_power() - limit the maximum power that a cooling device can consume * power_actor_set_power() - limit the maximum power that a cooling device can consume
* @cdev: pointer to &thermal_cooling_device * @cdev: pointer to &thermal_cooling_device
......
...@@ -380,6 +380,8 @@ static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev) ...@@ -380,6 +380,8 @@ static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev)
int power_actor_get_max_power(struct thermal_cooling_device *, int power_actor_get_max_power(struct thermal_cooling_device *,
struct thermal_zone_device *tz, u32 *max_power); struct thermal_zone_device *tz, u32 *max_power);
int power_actor_get_min_power(struct thermal_cooling_device *,
struct thermal_zone_device *tz, u32 *min_power);
int power_actor_set_power(struct thermal_cooling_device *, int power_actor_set_power(struct thermal_cooling_device *,
struct thermal_instance *, u32); struct thermal_instance *, u32);
struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
...@@ -415,6 +417,10 @@ static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev) ...@@ -415,6 +417,10 @@ static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev)
static inline int power_actor_get_max_power(struct thermal_cooling_device *cdev, static inline int power_actor_get_max_power(struct thermal_cooling_device *cdev,
struct thermal_zone_device *tz, u32 *max_power) struct thermal_zone_device *tz, u32 *max_power)
{ return 0; } { return 0; }
static inline int power_actor_get_min_power(struct thermal_cooling_device *cdev,
struct thermal_zone_device *tz,
u32 *min_power)
{ return -ENODEV; }
static inline int power_actor_set_power(struct thermal_cooling_device *cdev, static inline int power_actor_set_power(struct thermal_cooling_device *cdev,
struct thermal_instance *tz, u32 power) struct thermal_instance *tz, u32 power)
{ return 0; } { return 0; }
......
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