thermal/drivers/cpuidle_cooling: Change the registration function

Today, there is no user for the cpuidle cooling device. The targetted
platform is ARM and ARM64.

The cpuidle and the cpufreq cooling device are based on the device tree.

As the cpuidle cooling device can have its own configuration depending
on the platform and the available idle states. The DT node description
will give the optional properties to set the cooling device up.

Do no longer rely on the CPU node which is prone to error and will
lead to a confusion in the DT because the cpufreq cooling device is
also using it. Let initialize the cpuidle cooling device with the DT
binding.

This was tested on:
 - hikey960
 - hikey6220
 - rock960
 - db845c

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
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>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
Link: https://lore.kernel.org/r/20200429103644.5492-3-daniel.lezcano@linaro.org

1 files changed, 2 insertions, 10 deletions

diff --git a/include/linux/cpu_cooling.h b/include/linux/cpu_cooling.h
index 65501d8f9778..a3bdc8a98f2c 100644
--- a/include/linux/cpu_cooling.h
+++ b/include/linux/cpu_cooling.h
@@ -63,18 +63,10 @@ of_cpufreq_cooling_register(struct cpufreq_policy *policy)
 struct cpuidle_driver;
 
 #ifdef CONFIG_CPU_IDLE_THERMAL
-int cpuidle_cooling_register(struct cpuidle_driver *drv);
-int cpuidle_of_cooling_register(struct device_node *np,
-				struct cpuidle_driver *drv);
+void cpuidle_cooling_register(struct cpuidle_driver *drv);
 #else /* CONFIG_CPU_IDLE_THERMAL */
-static inline int cpuidle_cooling_register(struct cpuidle_driver *drv)
+static inline void cpuidle_cooling_register(struct cpuidle_driver *drv)
 {
-	return 0;
-}
-static inline int cpuidle_of_cooling_register(struct device_node *np,
-					      struct cpuidle_driver *drv)
-{
-	return 0;
 }
 #endif /* CONFIG_CPU_IDLE_THERMAL */