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authorRafael J. Wysocki <rjw@sisk.pl>2012-08-06 03:39:57 +0400
committerRafael J. Wysocki <rjw@sisk.pl>2012-09-04 03:36:01 +0400
commit77f827de07432a74821cf0f831d699544b2d474f (patch)
treec7abd8f50c25b43ff32ba5a4200cf5e4fcd31f89 /include/linux/pm_domain.h
parent802d8b49a7705298b62ac35a59b867f1288caaf3 (diff)
downloadlinux-77f827de07432a74821cf0f831d699544b2d474f.tar.xz
PM / Domains: Add power off/on function for system core suspend stage
Introduce function pm_genpd_syscore_switch() and two wrappers around it, pm_genpd_syscore_poweroff() and pm_genpd_syscore_poweron(), allowing the callers to let the generic PM domains framework know that the given device is not necessary any more and its PM domain can be turned off (the former) or that the given device will be required immediately, so its PM domain has to be turned on (the latter) during the system core (syscore) stage of system suspend (or hibernation) and resume. These functions will be used for handling devices registered as clock sources and clock event devices that belong to PM domains. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include/linux/pm_domain.h')
-rw-r--r--include/linux/pm_domain.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index a7d6172922d4..ab83cf3dfaac 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -258,4 +258,20 @@ static inline void genpd_queue_power_off_work(struct generic_pm_domain *gpd) {}
static inline void pm_genpd_poweroff_unused(void) {}
#endif
+#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
+extern void pm_genpd_syscore_switch(struct device *dev, bool suspend);
+#else
+static inline void pm_genpd_syscore_switch(struct device *dev, bool suspend) {}
+#endif
+
+static inline void pm_genpd_syscore_poweroff(struct device *dev)
+{
+ pm_genpd_syscore_switch(dev, true);
+}
+
+static inline void pm_genpd_syscore_poweron(struct device *dev)
+{
+ pm_genpd_syscore_switch(dev, false);
+}
+
#endif /* _LINUX_PM_DOMAIN_H */