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thermal: cpuidle: Register cpuidle cooling device

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The cpuidle driver can be used as a cooling device by injecting idle
cycles.

When the property is set, register the cpuidle driver with the idle
state node pointer as a cooling device. The thermal framework will do
the association automatically with the thermal zone via the
cooling-device defined in the device tree cooling-maps section.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20200429103644.5492-4-daniel.lezcano@linaro.org
This commit is contained in:
Daniel Lezcano 2020-04-29 12:36:42 +02:00
parent dfd0bda370
commit fc7a3d9e9c
2 changed files with 6 additions and 0 deletions
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3
drivers/cpuidle/cpuidle-arm.c
View File

@ -8,6 +8,7 @@
#define pr_fmt(fmt) "CPUidle arm: " fmt
#include <linux/cpu_cooling.h>
#include <linux/cpuidle.h>
#include <linux/cpumask.h>
#include <linux/cpu_pm.h>
@ -124,6 +125,8 @@ static int __init arm_idle_init_cpu(int cpu)
if (ret)
goto out_kfree_drv;
cpuidle_cooling_register(drv);
return 0;
out_kfree_drv:

3
drivers/cpuidle/cpuidle-psci.c
View File

@ -9,6 +9,7 @@
#define pr_fmt(fmt) "CPUidle PSCI: " fmt
#include <linux/cpuhotplug.h>
#include <linux/cpu_cooling.h>
#include <linux/cpuidle.h>
#include <linux/cpumask.h>
#include <linux/cpu_pm.h>
@ -313,6 +314,8 @@ static int __init psci_idle_init_cpu(int cpu)
if (ret)
goto out_kfree_drv;
cpuidle_cooling_register(drv);
return 0;
out_kfree_drv: