[PATCH v6 09/11] ARM: mvebu: Register notifier callback for the cpuidle transition
From: Gregory CLEMENT <hidden>
Date: 2014-03-28 11:14:35
Also in:
linux-pm, lkml
Subsystem:
arm port, arm/marvell kirkwood and armada 370, 375, 38x, 39x, xp, 3700, 7k/8k, cn9130 soc support, the rest · Maintainers:
Russell King, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Linus Torvalds
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 <redacted> --- arch/arm/mach-mvebu/pmsu.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
index 968c8c02c126..9ea2bb44d573 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>
@@ -263,4 +264,21 @@ 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);
--
1.8.1.2