Commit 6f3eaec8 authored by Colin Cross's avatar Colin Cross Committed by Santosh Shilimkar

cpu_pm: call notifiers during suspend

Implements syscore_ops in cpu_pm to call the cpu and
cpu cluster notifiers during suspend and resume,
allowing drivers receiving the notifications to
avoid implementing syscore_ops.
Signed-off-by: default avatarColin Cross <ccross@android.com>
Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: default avatarKevin Hilman <khilman@ti.com>
Tested-and-Acked-by: default avatarShawn Guo <shawn.guo@linaro.org>
Tested-by: default avatarVishwanath BS <vishwanath.bs@ti.com>
parent ab10023e
...@@ -20,6 +20,7 @@ ...@@ -20,6 +20,7 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/notifier.h> #include <linux/notifier.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <linux/syscore_ops.h>
static DEFINE_RWLOCK(cpu_pm_notifier_lock); static DEFINE_RWLOCK(cpu_pm_notifier_lock);
static RAW_NOTIFIER_HEAD(cpu_pm_notifier_chain); static RAW_NOTIFIER_HEAD(cpu_pm_notifier_chain);
...@@ -198,3 +199,35 @@ int cpu_cluster_pm_exit(void) ...@@ -198,3 +199,35 @@ int cpu_cluster_pm_exit(void)
return ret; return ret;
} }
EXPORT_SYMBOL_GPL(cpu_cluster_pm_exit); EXPORT_SYMBOL_GPL(cpu_cluster_pm_exit);
#ifdef CONFIG_PM
static int cpu_pm_suspend(void)
{
int ret;
ret = cpu_pm_enter();
if (ret)
return ret;
ret = cpu_cluster_pm_enter();
return ret;
}
static void cpu_pm_resume(void)
{
cpu_cluster_pm_exit();
cpu_pm_exit();
}
static struct syscore_ops cpu_pm_syscore_ops = {
.suspend = cpu_pm_suspend,
.resume = cpu_pm_resume,
};
static int cpu_pm_init(void)
{
register_syscore_ops(&cpu_pm_syscore_ops);
return 0;
}
core_initcall(cpu_pm_init);
#endif
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