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 31fec85..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 */
@@ -116,7 +118,6 @@ static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
        return to_gpd_data(dev->power.subsys_data->domain_data);
 }
 
-extern struct generic_pm_domain *pm_genpd_lookup_dev(struct device *dev);
 extern int __pm_genpd_add_device(struct generic_pm_domain *genpd,
                                 struct device *dev,
                                 struct gpd_timing_data *td);
@@ -129,6 +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;
@@ -138,10 +140,6 @@ static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
 {
        return ERR_PTR(-ENOSYS);
 }
-static inline struct generic_pm_domain *pm_genpd_lookup_dev(struct device *dev)
-{
-       return NULL;
-}
 static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
                                        struct device *dev,
                                        struct gpd_timing_data *td)
@@ -168,6 +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,
@@ -192,57 +194,57 @@ struct genpd_onecell_data {
        unsigned int num_domains;
 };
 
-typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args,
-                                               void *data);
-
 #ifdef CONFIG_PM_GENERIC_DOMAINS_OF
-int __of_genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
-                       void *data);
+int of_genpd_add_provider_simple(struct device_node *np,
+                                struct generic_pm_domain *genpd);
+int of_genpd_add_provider_onecell(struct device_node *np,
+                                 struct genpd_onecell_data *data);
 void of_genpd_del_provider(struct device_node *np);
-struct generic_pm_domain *of_genpd_get_from_provider(
-                       struct of_phandle_args *genpdspec);
-
-struct generic_pm_domain *__of_genpd_xlate_simple(
-                                       struct of_phandle_args *genpdspec,
-                                       void *data);
-struct generic_pm_domain *__of_genpd_xlate_onecell(
-                                       struct of_phandle_args *genpdspec,
-                                       void *data);
+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 */
-static inline int __of_genpd_add_provider(struct device_node *np,
-                                       genpd_xlate_t xlate, void *data)
+static inline int of_genpd_add_provider_simple(struct device_node *np,
+                                       struct generic_pm_domain *genpd)
 {
-       return 0;
+       return -ENOTSUPP;
 }
-static inline void of_genpd_del_provider(struct device_node *np) {}
 
-static inline struct generic_pm_domain *of_genpd_get_from_provider(
-                       struct of_phandle_args *genpdspec)
+static inline int of_genpd_add_provider_onecell(struct device_node *np,
+                                       struct genpd_onecell_data *data)
 {
-       return NULL;
+       return -ENOTSUPP;
 }
 
-#define __of_genpd_xlate_simple                NULL
-#define __of_genpd_xlate_onecell       NULL
+static inline void of_genpd_del_provider(struct device_node *np) {}
 
-static inline int genpd_dev_pm_attach(struct device *dev)
+static inline int of_genpd_add_device(struct of_phandle_args *args,
+                                     struct device *dev)
 {
        return -ENODEV;
 }
-#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
 
-static inline int of_genpd_add_provider_simple(struct device_node *np,
-                                       struct generic_pm_domain *genpd)
+static inline int of_genpd_add_subdomain(struct of_phandle_args *parent,
+                                        struct of_phandle_args *new_subdomain)
 {
-       return __of_genpd_add_provider(np, __of_genpd_xlate_simple, genpd);
+       return -ENODEV;
 }
-static inline int of_genpd_add_provider_onecell(struct device_node *np,
-                                       struct genpd_onecell_data *data)
+
+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 __of_genpd_add_provider(np, __of_genpd_xlate_onecell, data);
+       return ERR_PTR(-ENOTSUPP);
 }
+#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
 
 #ifdef CONFIG_PM
 extern int dev_pm_domain_attach(struct device *dev, bool power_on);