[PATCH v2 2/4] thermal: power_allocator: respect upper and lower bounds for cooling device

From: Lukasz Luba
Date: Thu Oct 15 2020 - 07:25:45 EST


The thermal cooling device specified in DT might be instantiated for
a thermal zone trip point with a limited set of OPPs to operate on. This
configuration should be supported by Intelligent Power Allocation (IPA),
since it is a standard for other governors. Change the code and allow IPA
to get power value of lower and upper bound set for a given cooling
device.

Signed-off-by: Lukasz Luba <lukasz.luba@xxxxxxx>
---
drivers/thermal/gov_power_allocator.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c
index ab0be26f0816..eb8c9afadf19 100644
--- a/drivers/thermal/gov_power_allocator.c
+++ b/drivers/thermal/gov_power_allocator.c
@@ -96,7 +96,10 @@ static u32 estimate_sustainable_power(struct thermal_zone_device *tz)
if (instance->trip != params->trip_max_desired_temperature)
continue;

- if (power_actor_get_min_power(cdev, &min_power))
+ if (!cdev_is_power_actor(cdev))
+ continue;
+
+ if (cdev->ops->state2power(cdev, instance->upper, &min_power))
continue;

sustainable_power += min_power;
@@ -398,7 +401,8 @@ static int allocate_power(struct thermal_zone_device *tz,

weighted_req_power[i] = frac_to_int(weight * req_power[i]);

- if (power_actor_get_max_power(cdev, &max_power[i]))
+ if (cdev->ops->state2power(cdev, instance->lower,
+ &max_power[i]))
continue;

total_req_power += req_power[i];
--
2.17.1