thermal: cpu_cooling: implement the power cooling device API
Add a basic power model to the cpu cooling device to implement the
power cooling device API. The power model uses the current frequency,
current load and OPPs for the power calculations. The cpus must have
registered their OPPs using the OPP library.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kapileshwar Singh <kapileshwar.singh@arm.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
diff --git a/include/linux/cpu_cooling.h b/include/linux/cpu_cooling.h
index bd95527..c156f50 100644
--- a/include/linux/cpu_cooling.h
+++ b/include/linux/cpu_cooling.h
@@ -28,6 +28,9 @@
#include <linux/thermal.h>
#include <linux/cpumask.h>
+typedef int (*get_static_t)(cpumask_t *cpumask, int interval,
+ unsigned long voltage, u32 *power);
+
#ifdef CONFIG_CPU_THERMAL
/**
* cpufreq_cooling_register - function to create cpufreq cooling device.
@@ -36,6 +39,10 @@
struct thermal_cooling_device *
cpufreq_cooling_register(const struct cpumask *clip_cpus);
+struct thermal_cooling_device *
+cpufreq_power_cooling_register(const struct cpumask *clip_cpus,
+ u32 capacitance, get_static_t plat_static_func);
+
/**
* of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
* @np: a valid struct device_node to the cooling device device tree node.
@@ -45,6 +52,12 @@
struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus);
+
+struct thermal_cooling_device *
+of_cpufreq_power_cooling_register(struct device_node *np,
+ const struct cpumask *clip_cpus,
+ u32 capacitance,
+ get_static_t plat_static_func);
#else
static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
@@ -52,6 +65,15 @@
{
return ERR_PTR(-ENOSYS);
}
+
+static inline struct thermal_cooling_device *
+of_cpufreq_power_cooling_register(struct device_node *np,
+ const struct cpumask *clip_cpus,
+ u32 capacitance,
+ get_static_t plat_static_func)
+{
+ return NULL;
+}
#endif
/**
@@ -68,11 +90,28 @@
return ERR_PTR(-ENOSYS);
}
static inline struct thermal_cooling_device *
+cpufreq_power_cooling_register(const struct cpumask *clip_cpus,
+ u32 capacitance, get_static_t plat_static_func)
+{
+ return NULL;
+}
+
+static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus)
{
return ERR_PTR(-ENOSYS);
}
+
+static inline struct thermal_cooling_device *
+of_cpufreq_power_cooling_register(struct device_node *np,
+ const struct cpumask *clip_cpus,
+ u32 capacitance,
+ get_static_t plat_static_func)
+{
+ return NULL;
+}
+
static inline
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
{