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Commit d163ee16 authored by Gregory CLEMENT's avatar Gregory CLEMENT Committed by Jason Cooper
Browse files

ARM: mvebu: Register notifier callback for the cpuidle transition 



In order to have well encapsulated code, we use notifier callbacks for
CPU_PM_ENTER and CPU_PM_EXIT inside the mvebu power management code.

Signed-off-by: default avatarGregory CLEMENT <gregory.clement@free-electrons.com>
Link: https://lkml.kernel.org/r/1397488214-20685-10-git-send-email-gregory.clement@free-electrons.com


Acked-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent 0041464c

arch/arm/mach-mvebu/pmsu.c

+18 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 


#define pr_fmt(fmt) "mvebu-pmsu: " fmt



#include <linux/cpu_pm.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/of_address.h>
@@ -240,4 +241,21 @@ static noinline void armada_370_xp_pmsu_idle_restore(void) 
	writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(hw_cpu));

}



static int armada_370_xp_cpu_pm_notify(struct notifier_block *self,

				    unsigned long action, void *hcpu)

{

	if (action == CPU_PM_ENTER) {

		unsigned int hw_cpu = cpu_logical_map(smp_processor_id());

		mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_370_xp_cpu_resume);

	} else if (action == CPU_PM_EXIT) {

		armada_370_xp_pmsu_idle_restore();

	}



	return NOTIFY_OK;

}



static struct notifier_block armada_370_xp_cpu_pm_notifier = {

	.notifier_call = armada_370_xp_cpu_pm_notify,

};



early_initcall(armada_370_xp_pmsu_init);