PM / Domains: Add support for removing nested PM domains by provider

[cascardo/linux.git] / include / linux / pm_domain.h

diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index f103869..a09fe5c 100644 (file)
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -51,6 +51,8 @@ struct generic_pm_domain {
        struct mutex lock;
        struct dev_power_governor *gov;
        struct work_struct power_off_work;
+       struct fwnode_handle *provider; /* Identity of the domain provider */
+       bool has_provider;
        const char *name;
        atomic_t sd_count;      /* Number of subdomains with power "on" */
        enum gpd_status status; /* Current state of the domain */
@@ -128,6 +130,7 @@ extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
                                     struct generic_pm_domain *target);
 extern int pm_genpd_init(struct generic_pm_domain *genpd,
                         struct dev_power_governor *gov, bool is_off);
+extern int pm_genpd_remove(struct generic_pm_domain *genpd);
 
 extern struct dev_power_governor simple_qos_governor;
 extern struct dev_power_governor pm_domain_always_on_gov;
@@ -163,6 +166,10 @@ static inline int pm_genpd_init(struct generic_pm_domain *genpd,
 {
        return -ENOSYS;
 }
+static inline int pm_genpd_remove(struct generic_pm_domain *genpd)
+{
+       return -ENOTSUPP;
+}
 #endif
 
 static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
@@ -197,6 +204,7 @@ extern int of_genpd_add_device(struct of_phandle_args *args,
                               struct device *dev);
 extern int of_genpd_add_subdomain(struct of_phandle_args *parent,
                                  struct of_phandle_args *new_subdomain);
+extern struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
 
 int genpd_dev_pm_attach(struct device *dev);
 #else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
@@ -230,6 +238,12 @@ static inline int genpd_dev_pm_attach(struct device *dev)
 {
        return -ENODEV;
 }
+
+static inline
+struct generic_pm_domain *of_genpd_remove_last(struct device_node *np)
+{
+       return ERR_PTR(-ENOTSUPP);
+}
 #endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
 
 #ifdef CONFIG_PM