diff options
| author | Javi Merino <javi.merino@arm.com> | 2015-09-14 16:23:50 +0300 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2015-09-14 17:39:46 +0300 |
| commit | c973c3bcec3752455c4d7545edd42935cd7942d9 (patch) | |
| tree | c436c0e403ade90145c877a6fb0d75992851ff7a /drivers/thermal | |
| parent | eba4f88d5af84e0fcaa5d6eb4fe35a75c47203cb (diff) | |
| download | linux-c973c3bcec3752455c4d7545edd42935cd7942d9.tar.xz | |
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: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/thermal_core.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 5e5fc7015c7f..d9e525cc9c1c 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1013,6 +1013,34 @@ int power_actor_get_max_power(struct thermal_cooling_device *cdev, } /** + * 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 * @cdev: pointer to &thermal_cooling_device * @instance: thermal instance to update |