PM / Domains: Introduce function to power off all unused PM domains
Add a new function pm_genpd_poweroff_unused() queuing up the
execution of pm_genpd_poweroff() for every initialized generic PM
domain. Calling it will cause every generic PM domain without
devices in use to be powered off.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index feb80af..3e4f3d3 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -24,6 +24,7 @@
struct generic_pm_domain {
struct dev_pm_domain domain; /* PM domain operations */
+ struct list_head gpd_list_node; /* Node in the global PM domains list */
struct list_head sd_node; /* Node in the parent's subdomain list */
struct generic_pm_domain *parent; /* Parent PM domain */
struct list_head sd_list; /* List of dubdomains */
@@ -71,6 +72,7 @@
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
+extern void pm_genpd_poweroff_unused(void);
#else
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
struct device *dev)
@@ -98,6 +100,7 @@
{
return -ENOSYS;
}
+static inline void pm_genpd_poweroff_unused(void) {}
#endif
#endif /* _LINUX_PM_DOMAIN_H */