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thermal/drivers/Kconfig: Convert the CPU cooling device to a choice 

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
This commit is contained in:
Daniel Lezcano 2019-12-04 16:39:27 +01:00
parent fd8433099c
commit 2b586feab4
3 changed files with 16 additions and 6 deletions
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14
drivers/thermal/Kconfig
View File

@ -151,8 +151,18 @@ config THERMAL_GOV_POWER_ALLOCATOR
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
@ -160,7 +170,7 @@ config CPU_THERMAL
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"

2
drivers/thermal/Makefile
View File

@ -19,7 +19,7 @@ thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE) += user_space.o
thermal_sys-$(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

6
include/linux/cpu_cooling.h
View File

@ -19,7 +19,7 @@
struct cpufreq_policy;
#ifdef CONFIG_CPU_THERMAL
#ifdef CONFIG_CPU_FREQ_THERMAL
/**
* cpufreq_cooling_register - function to create cpufreq cooling device.
* @policy: cpufreq policy.
@ -40,7 +40,7 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
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)
{
@ -58,6 +58,6 @@ of_cpufreq_cooling_register(struct cpufreq_policy *policy)
{
return NULL;
}
#endif /* CONFIG_CPU_THERMAL */
#endif /* CONFIG_CPU_FREQ_THERMAL */
#endif /* __CPU_COOLING_H__ */