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cpufreq: mediatek: allow building as a module

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The MT8173 cpufreq driver can currently only be built-in, but
it has a Kconfig dependency on the thermal core. THERMAL
can be a loadable module, which in turn makes this driver
impossible to build.

It is nicer to make the cpufreq driver a module as well, so
this patch turns the option in to a 'tristate' and adapts
the dependency accordingly.

The driver has no module_exit() function, so it will continue
to not support unloading, but it can be built as a module
and loaded at runtime now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 5269e7067c (cpufreq: Add ARM_MT8173_CPUFREQ dependency on THERMAL)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Arnd Bergmann 2016-02-29 17:04:21 +01:00 committed by Rafael J. Wysocki
parent ddd30ef474
commit 3c2002aec3
2 changed files with 3 additions and 2 deletions
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4
drivers/cpufreq/Kconfig.arm
View File

@ -84,10 +84,10 @@ config ARM_KIRKWOOD_CPUFREQ
SoCs.
config ARM_MT8173_CPUFREQ
bool "Mediatek MT8173 CPUFreq support"
tristate "Mediatek MT8173 CPUFreq support"
depends on ARCH_MEDIATEK && REGULATOR
depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
depends on !CPU_THERMAL || THERMAL=y
depends on !CPU_THERMAL || THERMAL
select PM_OPP
help
This adds the CPUFreq driver support for Mediatek MT8173 SoC.

1
drivers/cpufreq/mt8173-cpufreq.c
View File

@ -17,6 +17,7 @@
#include <linux/cpu_cooling.h>
#include <linux/cpufreq.h>
#include <linux/cpumask.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>