The next changes will add a new way to cool down a CPU by injecting
idle cycles. With the current configuration, a CPU cooling device is
the cpufreq cooling device. As we want to add a new CPU cooling
device, let's convert the CPU cooling to a choice giving a list of CPU
cooling devices. At this point, there is obviously only one CPU
cooling device.
There is no functional changes.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20191204153930.9128-1-daniel.lezcano@linaro.org
config CPU_THERMAL
bool "Generic cpu cooling support"
- depends on CPU_FREQ
depends on THERMAL_OF
+ help
+ Enable the CPU cooling features. If the system has no active
+ cooling device available, this option allows to use the CPU
+ as a cooling device.
+
+if CPU_THERMAL
+
+config CPU_FREQ_THERMAL
+ bool "CPU frequency cooling device"
+ depends on CPU_FREQ
+ default y
help
This implements the generic cpu cooling mechanism through frequency
reduction. An ACPI version of this already exists
This will be useful for platforms using the generic thermal interface
and not the ACPI interface.
- If you want this support, you should say Y here.
+endif
config CLOCK_THERMAL
bool "Generic clock cooling support"
thermal_sys-$(CONFIG_THERMAL_GOV_POWER_ALLOCATOR) += power_allocator.o
# cpufreq cooling
-thermal_sys-$(CONFIG_CPU_THERMAL) += cpu_cooling.o
+thermal_sys-$(CONFIG_CPU_FREQ_THERMAL) += cpu_cooling.o
# clock cooling
thermal_sys-$(CONFIG_CLOCK_THERMAL) += clock_cooling.o
struct cpufreq_policy;
-#ifdef CONFIG_CPU_THERMAL
+#ifdef CONFIG_CPU_FREQ_THERMAL
/**
* cpufreq_cooling_register - function to create cpufreq cooling device.
* @policy: cpufreq policy.
struct thermal_cooling_device *
of_cpufreq_cooling_register(struct cpufreq_policy *policy);
-#else /* !CONFIG_CPU_THERMAL */
+#else /* !CONFIG_CPU_FREQ_THERMAL */
static inline struct thermal_cooling_device *
cpufreq_cooling_register(struct cpufreq_policy *policy)
{
{
return NULL;
}
-#endif /* CONFIG_CPU_THERMAL */
+#endif /* CONFIG_CPU_FREQ_THERMAL */
#endif /* __CPU_COOLING_H__ */