diff options
| author | Colin Cross <ccross@android.com> | 2011-10-25 10:41:07 +0800 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-10-25 10:41:07 +0800 |
| commit | d7a2a6a260f46197983f1a5a56771cb732f19518 (patch) | |
| tree | 630a8ec7381c791f38bee80fd54dfad5e03b8589 /kernel | |
| parent | 21feb46fa5255c69185cccd321b77afdce32248c (diff) | |
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: Colin Cross <ccross@android.com>
[santosh.shilimkar@ti.com: Rebased against 3.1-rc4]
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cpu_pm.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/kernel/cpu_pm.c b/kernel/cpu_pm.c index 77f32a3df9a9..770f1dea6eab 100644 --- a/kernel/cpu_pm.c +++ b/kernel/cpu_pm.c @@ -20,6 +20,7 @@ #include <linux/module.h> #include <linux/notifier.h> #include <linux/spinlock.h> +#include <linux/syscore_ops.h> static DEFINE_RWLOCK(cpu_pm_notifier_lock); static RAW_NOTIFIER_HEAD(cpu_pm_notifier_chain); @@ -113,3 +114,35 @@ int cpu_cluster_pm_exit(void) return ret; } 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 |