1 files changed, 96 insertions, 7 deletions

diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 65633e5a2bc0..a03a0ad998b8 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -10,6 +10,7 @@
 #define _LINUX_PM_DOMAIN_H
 
 #include <linux/device.h>
+#include <linux/err.h>
 
 enum gpd_status {
         GPD_STATE_ACTIVE = 0,   /* PM domain is active */
@@ -21,6 +22,23 @@ enum gpd_status {
 
 struct dev_power_governor {
         bool (*power_down_ok)(struct dev_pm_domain *domain);
+        bool (*stop_ok)(struct device *dev);
+};
+
+struct gpd_dev_ops {
+        int (*start)(struct device *dev);
+        int (*stop)(struct device *dev);
+        int (*save_state)(struct device *dev);
+        int (*restore_state)(struct device *dev);
+        int (*suspend)(struct device *dev);
+        int (*suspend_late)(struct device *dev);
+        int (*resume_early)(struct device *dev);
+        int (*resume)(struct device *dev);
+        int (*freeze)(struct device *dev);
+        int (*freeze_late)(struct device *dev);
+        int (*thaw_early)(struct device *dev);
+        int (*thaw)(struct device *dev);
+        bool (*active_wakeup)(struct device *dev);
 };
 
 struct generic_pm_domain {
@@ -32,6 +50,7 @@ struct generic_pm_domain {
         struct mutex lock;
         struct dev_power_governor *gov;
         struct work_struct power_off_work;
+        char *name;
         unsigned int in_progress;       /* Number of devices being suspended now */
         atomic_t sd_count;      /* Number of subdomains with power "on" */
         enum gpd_status status; /* Current state of the domain */
@@ -44,10 +63,13 @@ struct generic_pm_domain {
         bool suspend_power_off; /* Power status before system suspend */
         bool dev_irq_safe;      /* Device callbacks are IRQ-safe */
         int (*power_off)(struct generic_pm_domain *domain);
+        s64 power_off_latency_ns;
         int (*power_on)(struct generic_pm_domain *domain);
-        int (*start_device)(struct device *dev);
-        int (*stop_device)(struct device *dev);
-        bool (*active_wakeup)(struct device *dev);
+        s64 power_on_latency_ns;
+        struct gpd_dev_ops dev_ops;
+        s64 break_even_ns;      /* Power break even for the entire domain. */
+        s64 max_off_time_ns;    /* Maximum allowed "suspended" time. */
+        ktime_t power_off_time;
 };
 
 static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
@@ -62,8 +84,18 @@ struct gpd_link {
         struct list_head slave_node;
 };
 
+struct gpd_timing_data {
+        s64 stop_latency_ns;
+        s64 start_latency_ns;
+        s64 save_state_latency_ns;
+        s64 restore_state_latency_ns;
+        s64 break_even_ns;
+};
+
 struct generic_pm_domain_data {
         struct pm_domain_data base;
+        struct gpd_dev_ops ops;
+        struct gpd_timing_data td;
         bool need_restore;
 };
 
@@ -73,18 +105,54 @@ static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *
 }
 
 #ifdef CONFIG_PM_GENERIC_DOMAINS
-extern int pm_genpd_add_device(struct generic_pm_domain *genpd,
-                               struct device *dev);
+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 dev_power_governor simple_qos_governor;
+
+extern struct generic_pm_domain *dev_to_genpd(struct device *dev);
+extern int __pm_genpd_add_device(struct generic_pm_domain *genpd,
+                                 struct device *dev,
+                                 struct gpd_timing_data *td);
+
+static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
+                                      struct device *dev)
+{
+        return __pm_genpd_add_device(genpd, dev, NULL);
+}
+
 extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
                                   struct device *dev);
 extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
                                   struct generic_pm_domain *new_subdomain);
 extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
                                      struct generic_pm_domain *target);
+extern int pm_genpd_add_callbacks(struct device *dev,
+                                  struct gpd_dev_ops *ops,
+                                  struct gpd_timing_data *td);
+extern int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td);
 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 bool default_stop_ok(struct device *dev);
+
+extern struct dev_power_governor pm_domain_always_on_gov;
 #else
+
+static inline struct generic_pm_domain *dev_to_genpd(struct device *dev)
+{
+        return ERR_PTR(-ENOSYS);
+}
+static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
+                                        struct device *dev,
+                                        struct gpd_timing_data *td)
+{
+        return -ENOSYS;
+}
 static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
                                       struct device *dev)
 {
@@ -105,14 +173,35 @@ static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
 {
         return -ENOSYS;
 }
-static inline void pm_genpd_init(struct generic_pm_domain *genpd,
-                                 struct dev_power_governor *gov, bool is_off) {}
+static inline int pm_genpd_add_callbacks(struct device *dev,
+                                         struct gpd_dev_ops *ops,
+                                         struct gpd_timing_data *td)
+{
+        return -ENOSYS;
+}
+static inline int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
+{
+        return -ENOSYS;
+}
+static inline void pm_genpd_init(struct generic_pm_domain *genpd, bool is_off)
+{
+}
 static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
 {
         return -ENOSYS;
 }
+static inline bool default_stop_ok(struct device *dev)
+{
+        return false;
+}
+#define pm_domain_always_on_gov NULL
 #endif
 
+static inline int pm_genpd_remove_callbacks(struct device *dev)
+{
+        return __pm_genpd_remove_callbacks(dev, true);
+}
+
 #ifdef CONFIG_PM_GENERIC_DOMAINS_RUNTIME
 extern void genpd_queue_power_off_work(struct generic_pm_domain *genpd);
 extern void pm_genpd_poweroff_unused(void);