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ARM: mvebu: Register notifier callback for the cpuidle transition

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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: Gregory 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: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Gregory CLEMENT 2014-04-14 17:10:12 +02:00 committed by Jason Cooper
parent 0041464cee
commit d163ee165b
1 changed files with 18 additions and 0 deletions
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18
arch/arm/mach-mvebu/pmsu.c
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@ -18,6 +18,7 @@
#define pr_fmt(fmt) "mvebu-pmsu: " fmt #define pr_fmt(fmt) "mvebu-pmsu: " fmt
#include <linux/cpu_pm.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/of_address.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)); 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); early_initcall(armada_370_xp_pmsu_init);