diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/domain.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index c3e4e2934e16..c2c537de22b6 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -16,6 +16,9 @@ #include <linux/sched.h> #include <linux/suspend.h> +static LIST_HEAD(gpd_list); +static DEFINE_MUTEX(gpd_list_lock); + #ifdef CONFIG_PM static struct generic_pm_domain *dev_to_genpd(struct device *dev) @@ -1241,4 +1244,22 @@ void pm_genpd_init(struct generic_pm_domain *genpd, genpd->domain.ops.restore_noirq = pm_genpd_restore_noirq; genpd->domain.ops.restore = pm_genpd_restore; genpd->domain.ops.complete = pm_genpd_complete; + mutex_lock(&gpd_list_lock); + list_add(&genpd->gpd_list_node, &gpd_list); + mutex_unlock(&gpd_list_lock); +} + +/** + * pm_genpd_poweroff_unused - Power off all PM domains with no devices in use. + */ +void pm_genpd_poweroff_unused(void) +{ + struct generic_pm_domain *genpd; + + mutex_lock(&gpd_list_lock); + + list_for_each_entry(genpd, &gpd_list, gpd_list_node) + genpd_queue_power_off_work(genpd); + + mutex_unlock(&gpd_list_lock); } |