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| author | Gregory CLEMENT <gregory.clement@free-electrons.com> | 2014-04-14 17:10:12 +0200 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2014-05-08 16:19:00 +0000 |
| commit | d163ee165bd49a51f77bae632ebf37eda4899d0e (patch) | |
| tree | 2ee0c618ff44c8d4b53517ac6a5dc83f21fb1891 /arch/arm/mach-mvebu/pmsu.c | |
| parent | 0041464ceeccd4718de228141438335e2d92f91b (diff) | |
| download | talos-obmc-linux-d163ee165bd49a51f77bae632ebf37eda4899d0e.tar.gz talos-obmc-linux-d163ee165bd49a51f77bae632ebf37eda4899d0e.zip | |
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: 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>
Diffstat (limited to 'arch/arm/mach-mvebu/pmsu.c')
| -rw-r--r-- | arch/arm/mach-mvebu/pmsu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c index 78cf0279e1af..7902d21d7d68 100644 --- a/arch/arm/mach-mvebu/pmsu.c +++ b/arch/arm/mach-mvebu/pmsu.c @@ -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); |
