diff mbox series

[4/4] thermal: cpuidle: Register cpuidle cooling device

Message ID 20200329220324.8785-4-daniel.lezcano@linaro.org (mailing list archive)
State New, archived
Delegated to: Daniel Lezcano
Headers show
Series [V2,1/4] powercap/drivers/idle_inject: Specify idle state max latency | expand

Commit Message

Daniel Lezcano March 29, 2020, 10:03 p.m. UTC 
The cpuidle driver can be used as a cooling device by injecting idle
cycles. The DT binding for the idle state added an optional

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>
---
 drivers/cpuidle/cpuidle-arm.c  | 5 +++++
 drivers/cpuidle/cpuidle-psci.c | 5 +++++
 2 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c
index 9e5156d39627..2406ac0ae134 100644
--- a/drivers/cpuidle/cpuidle-arm.c
+++ b/drivers/cpuidle/cpuidle-arm.c
@@ -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 +125,10 @@  static int __init arm_idle_init_cpu(int cpu)
 	if (ret)
 		goto out_kfree_drv;
 
+	ret = cpuidle_cooling_register(drv);
+	if (ret)
+		pr_err("Failed to register the idle cooling device: %d\n", ret);
+
 	return 0;
 
 out_kfree_drv:
diff --git a/drivers/cpuidle/cpuidle-psci.c b/drivers/cpuidle/cpuidle-psci.c
index edd7a54ef0d3..8e805bff646f 100644
--- a/drivers/cpuidle/cpuidle-psci.c
+++ b/drivers/cpuidle/cpuidle-psci.c
@@ -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>
@@ -305,6 +306,10 @@  static int __init psci_idle_init_cpu(int cpu)
 	if (ret)
 		goto out_kfree_drv;
 
+	ret = cpuidle_cooling_register(drv);
+	if (ret)
+		pr_err("Failed to register the idle cooling device: %d\n", ret);
+
 	return 0;
 
 out_kfree_drv: