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author | Lukasz Luba <lukasz.luba@arm.com> | 2020-10-15 12:24:41 +0100 |
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committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2020-10-27 09:44:32 +0100 |
commit | 345a8af7ea63ac75a9000159d6298769d3d50f91 (patch) | |
tree | dd1df271c1c1a05a698ba048384ae0109c3b6865 /drivers/thermal/gov_power_allocator.c | |
parent | thermal: core: Remove unused functions in power actor section (diff) | |
download | linux-dev-345a8af7ea63ac75a9000159d6298769d3d50f91.tar.xz linux-dev-345a8af7ea63ac75a9000159d6298769d3d50f91.zip |
thermal: core: Move power_actor_set_power into IPA
Since the power actor section has one function power_actor_set_power()
move it into Intelligent Power Allocation (IPA). There is no other user
of that helper function. It would also allow to remove the check of
cdev_is_power_actor() because the code which calls it in IPA already does
the needed check. Make the function static since only IPA use it.
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20201015112441.4056-5-lukasz.luba@arm.com
Diffstat (limited to 'drivers/thermal/gov_power_allocator.c')
-rw-r--r-- | drivers/thermal/gov_power_allocator.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c index eb8c9afadf19..b29e21c56a4f 100644 --- a/drivers/thermal/gov_power_allocator.c +++ b/drivers/thermal/gov_power_allocator.c @@ -255,6 +255,38 @@ static u32 pid_controller(struct thermal_zone_device *tz, } /** + * power_actor_set_power() - limit the maximum power a cooling device consumes + * @cdev: pointer to &thermal_cooling_device + * @instance: thermal instance to update + * @power: the power in milliwatts + * + * Set the cooling device to consume at most @power milliwatts. The limit is + * expected to be a cap at the maximum power consumption. + * + * Return: 0 on success, -EINVAL if the cooling device does not + * implement the power actor API or -E* for other failures. + */ +static int +power_actor_set_power(struct thermal_cooling_device *cdev, + struct thermal_instance *instance, u32 power) +{ + unsigned long state; + int ret; + + ret = cdev->ops->power2state(cdev, power, &state); + if (ret) + return ret; + + instance->target = clamp_val(state, instance->lower, instance->upper); + mutex_lock(&cdev->lock); + cdev->updated = false; + mutex_unlock(&cdev->lock); + thermal_cdev_update(cdev); + + return 0; +} + +/** * divvy_up_power() - divvy the allocated power between the actors * @req_power: each actor's requested power * @max_power: each actor's maximum available power |