#define _LINUX_PM_DOMAIN_H
#include <linux/device.h>
+#include <linux/err.h>
enum gpd_status {
GPD_STATE_ACTIVE = 0, /* PM domain is active */
struct dev_power_governor {
bool (*power_down_ok)(struct dev_pm_domain *domain);
+ bool (*stop_ok)(struct device *dev);
};
struct gpd_dev_ops {
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 */
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);
+ 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)
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;
};
return to_gpd_data(dev->power.subsys_data->domain_data);
}
-extern int pm_genpd_add_device(struct generic_pm_domain *genpd,
- struct device *dev);
+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);
-extern int pm_genpd_remove_callbacks(struct device *dev);
+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)
{
return -ENOSYS;
}
static inline int pm_genpd_add_callbacks(struct device *dev,
- struct gpd_dev_ops *ops)
+ struct gpd_dev_ops *ops,
+ struct gpd_timing_data *td)
{
return -ENOSYS;
}
-static inline int pm_genpd_remove_callbacks(struct device *dev)
+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,
- struct dev_power_governor *gov, bool is_off) {}
+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);