summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/arm/mach-shmobile/pm-sh7372.c29
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c
index 7fda2301c9b..77b8fc12fc2 100644
--- a/arch/arm/mach-shmobile/pm-sh7372.c
+++ b/arch/arm/mach-shmobile/pm-sh7372.c
@@ -239,7 +239,6 @@ struct sh7372_pm_domain sh7372_d4 = {
struct sh7372_pm_domain sh7372_a4r = {
.genpd.name = "A4R",
.bit_shift = 5,
- .gov = &pm_domain_always_on_gov,
.suspend = sh7372_a4r_suspend,
.resume = sh7372_intcs_resume,
};
@@ -535,9 +534,37 @@ static int sh7372_enter_suspend(suspend_state_t suspend_state)
return 0;
}
+/**
+ * sh7372_pm_notifier_fn - SH7372 PM notifier routine.
+ * @notifier: Unused.
+ * @pm_event: Event being handled.
+ * @unused: Unused.
+ */
+static int sh7372_pm_notifier_fn(struct notifier_block *notifier,
+ unsigned long pm_event, void *unused)
+{
+ switch (pm_event) {
+ case PM_SUSPEND_PREPARE:
+ /*
+ * This is necessary, because the A4R domain has to be "on"
+ * when suspend_device_irqs() and resume_device_irqs() are
+ * executed during system suspend and resume, respectively, so
+ * that those functions don't crash while accessing the INTCS.
+ */
+ pm_genpd_poweron(&sh7372_a4r.genpd);
+ break;
+ case PM_POST_SUSPEND:
+ pm_genpd_poweroff_unused();
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
static void sh7372_suspend_init(void)
{
shmobile_suspend_ops.enter = sh7372_enter_suspend;
+ pm_notifier(sh7372_pm_notifier_fn, 0);
}
#else
static void sh7372_suspend_init(void) {}