diff options
Diffstat (limited to 'drivers/thermal/thermal_core.c')
| -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 |
