[linux-block.git] / include / linux / pm_domain.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * pm_domain.h - Definitions and headers related to device power domains.
 *
 * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
 */

#ifndef _LINUX_PM_DOMAIN_H
#define _LINUX_PM_DOMAIN_H

#include <linux/device.h>
#include <linux/ktime.h>
#include <linux/mutex.h>
#include <linux/pm.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/notifier.h>
#include <linux/spinlock.h>
#include <linux/cpumask.h>

/*
 * Flags to control the behaviour of a genpd.
 *
 * These flags may be set in the struct generic_pm_domain's flags field by a
 * genpd backend driver. The flags must be set before it calls pm_genpd_init(),
 * which initializes a genpd.
 *
 * GENPD_FLAG_PM_CLK:		Instructs genpd to use the PM clk framework,
 *				while powering on/off attached devices.
 *
 * GENPD_FLAG_IRQ_SAFE:		This informs genpd that its backend callbacks,
 *				->power_on|off(), doesn't sleep. Hence, these
 *				can be invoked from within atomic context, which
 *				enables genpd to power on/off the PM domain,
 *				even when pm_runtime_is_irq_safe() returns true,
 *				for any of its attached devices. Note that, a
 *				genpd having this flag set, requires its
 *				masterdomains to also have it set.
 *
 * GENPD_FLAG_ALWAYS_ON:	Instructs genpd to always keep the PM domain
 *				powered on.
 *
 * GENPD_FLAG_ACTIVE_WAKEUP:	Instructs genpd to keep the PM domain powered
 *				on, in case any of its attached devices is used
 *				in the wakeup path to serve system wakeups.
 *
 * GENPD_FLAG_CPU_DOMAIN:	Instructs genpd that it should expect to get
 *				devices attached, which may belong to CPUs or
 *				possibly have subdomains with CPUs attached.
 *				This flag enables the genpd backend driver to
 *				deploy idle power management support for CPUs
 *				and groups of CPUs. Note that, the backend
 *				driver must then comply with the so called,
 *				last-man-standing algorithm, for the CPUs in the
 *				PM domain.
 *
 * GENPD_FLAG_RPM_ALWAYS_ON:	Instructs genpd to always keep the PM domain
 *				powered on except for system suspend.
 *
 * GENPD_FLAG_MIN_RESIDENCY:	Enable the genpd governor to consider its
 *				components' next wakeup when determining the
 *				optimal idle state.
 */
#define GENPD_FLAG_PM_CLK	 (1U << 0)
#define GENPD_FLAG_IRQ_SAFE	 (1U << 1)
#define GENPD_FLAG_ALWAYS_ON	 (1U << 2)
#define GENPD_FLAG_ACTIVE_WAKEUP (1U << 3)
#define GENPD_FLAG_CPU_DOMAIN	 (1U << 4)
#define GENPD_FLAG_RPM_ALWAYS_ON (1U << 5)
#define GENPD_FLAG_MIN_RESIDENCY (1U << 6)

enum gpd_status {
	GENPD_STATE_ON = 0,	/* PM domain is on */
	GENPD_STATE_OFF,	/* PM domain is off */
};

enum genpd_notication {
	GENPD_NOTIFY_PRE_OFF = 0,
	GENPD_NOTIFY_OFF,
	GENPD_NOTIFY_PRE_ON,
	GENPD_NOTIFY_ON,
};

struct dev_power_governor {
	bool (*power_down_ok)(struct dev_pm_domain *domain);
	bool (*suspend_ok)(struct device *dev);
};

struct gpd_dev_ops {
	int (*start)(struct device *dev);
	int (*stop)(struct device *dev);
};

struct genpd_power_state {
	s64 power_off_latency_ns;
	s64 power_on_latency_ns;
	s64 residency_ns;
	u64 usage;
	u64 rejected;
	struct fwnode_handle *fwnode;
	u64 idle_time;
	void *data;
};

struct genpd_lock_ops;
struct dev_pm_opp;
struct opp_table;

struct generic_pm_domain {
	struct device dev;
	struct dev_pm_domain domain;	/* PM domain operations */
	struct list_head gpd_list_node;	/* Node in the global PM domains list */
	struct list_head parent_links;	/* Links with PM domain as a parent */
	struct list_head child_links;	/* Links with PM domain as a child */
	struct list_head dev_list;	/* List of devices */
	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 */
	unsigned int device_count;	/* Number of devices */
	unsigned int suspended_count;	/* System suspend device counter */
	unsigned int prepared_count;	/* Suspend counter of prepared devices */
	unsigned int performance_state;	/* Aggregated max performance state */
	cpumask_var_t cpus;		/* A cpumask of the attached CPUs */
	int (*power_off)(struct generic_pm_domain *domain);
	int (*power_on)(struct generic_pm_domain *domain);
	struct raw_notifier_head power_notifiers; /* Power on/off notifiers */
	struct opp_table *opp_table;	/* OPP table of the genpd */
	unsigned int (*opp_to_performance_state)(struct generic_pm_domain *genpd,
						 struct dev_pm_opp *opp);
	int (*set_performance_state)(struct generic_pm_domain *genpd,
				     unsigned int state);
	struct gpd_dev_ops dev_ops;
	s64 max_off_time_ns;	/* Maximum allowed "suspended" time. */
	ktime_t next_wakeup;	/* Maintained by the domain governor */
	bool max_off_time_changed;
	bool cached_power_down_ok;
	bool cached_power_down_state_idx;
	int (*attach_dev)(struct generic_pm_domain *domain,
			  struct device *dev);
	void (*detach_dev)(struct generic_pm_domain *domain,
			   struct device *dev);
	unsigned int flags;		/* Bit field of configs for genpd */
	struct genpd_power_state *states;
	void (*free_states)(struct genpd_power_state *states,
			    unsigned int state_count);
	unsigned int state_count; /* number of states */
	unsigned int state_idx; /* state that genpd will go to when off */
	u64 on_time;
	u64 accounting_time;
	const struct genpd_lock_ops *lock_ops;
	union {
		struct mutex mlock;
		struct {
			spinlock_t slock;
			unsigned long lock_flags;
		};
	};

};

static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
{
	return container_of(pd, struct generic_pm_domain, domain);
}

struct gpd_link {
	struct generic_pm_domain *parent;
	struct list_head parent_node;
	struct generic_pm_domain *child;
	struct list_head child_node;

	/* Sub-domain's per-master domain performance state */
	unsigned int performance_state;
	unsigned int prev_performance_state;
};

struct gpd_timing_data {
	s64 suspend_latency_ns;
	s64 resume_latency_ns;
	s64 effective_constraint_ns;
	bool constraint_changed;
	bool cached_suspend_ok;
};

struct pm_domain_data {
	struct list_head list_node;
	struct device *dev;
};

struct generic_pm_domain_data {
	struct pm_domain_data base;
	struct gpd_timing_data td;
	struct notifier_block nb;
	struct notifier_block *power_nb;
	int cpu;
	unsigned int performance_state;
	unsigned int default_pstate;
	unsigned int rpm_pstate;
	ktime_t	next_wakeup;
	void *data;
};

#ifdef CONFIG_PM_GENERIC_DOMAINS
static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *pdd)
{
	return container_of(pdd, struct generic_pm_domain_data, base);
}

static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
{
	return to_gpd_data(dev->power.subsys_data->domain_data);
}

int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev);
int pm_genpd_remove_device(struct device *dev);
int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
			   struct generic_pm_domain *subdomain);
int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
			      struct generic_pm_domain *subdomain);
int pm_genpd_init(struct generic_pm_domain *genpd,
		  struct dev_power_governor *gov, bool is_off);
int pm_genpd_remove(struct generic_pm_domain *genpd);
int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state);
int dev_pm_genpd_add_notifier(struct device *dev, struct notifier_block *nb);
int dev_pm_genpd_remove_notifier(struct device *dev);
void dev_pm_genpd_set_next_wakeup(struct device *dev, ktime_t next);

extern struct dev_power_governor simple_qos_governor;
extern struct dev_power_governor pm_domain_always_on_gov;
#ifdef CONFIG_CPU_IDLE
extern struct dev_power_governor pm_domain_cpu_gov;
#endif
#else

static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
{
	return ERR_PTR(-ENOSYS);
}
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
				      struct device *dev)
{
	return -ENOSYS;
}
static inline int pm_genpd_remove_device(struct device *dev)
{
	return -ENOSYS;
}
static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
					 struct generic_pm_domain *subdomain)
{
	return -ENOSYS;
}
static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
					    struct generic_pm_domain *subdomain)
{
	return -ENOSYS;
}
static inline int pm_genpd_init(struct generic_pm_domain *genpd,
				struct dev_power_governor *gov, bool is_off)
{
	return -ENOSYS;
}
static inline int pm_genpd_remove(struct generic_pm_domain *genpd)
{
	return -EOPNOTSUPP;
}

static inline int dev_pm_genpd_set_performance_state(struct device *dev,
						     unsigned int state)
{
	return -EOPNOTSUPP;
}

static inline int dev_pm_genpd_add_notifier(struct device *dev,
					    struct notifier_block *nb)
{
	return -EOPNOTSUPP;
}

static inline int dev_pm_genpd_remove_notifier(struct device *dev)
{
	return -EOPNOTSUPP;
}

static inline void dev_pm_genpd_set_next_wakeup(struct device *dev, ktime_t next)
{ }

#define simple_qos_governor		(*(struct dev_power_governor *)(NULL))
#define pm_domain_always_on_gov		(*(struct dev_power_governor *)(NULL))
#endif

#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
void dev_pm_genpd_suspend(struct device *dev);
void dev_pm_genpd_resume(struct device *dev);
#else
static inline void dev_pm_genpd_suspend(struct device *dev) {}
static inline void dev_pm_genpd_resume(struct device *dev) {}
#endif

/* OF PM domain providers */
struct of_device_id;

typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args,
						   void *data);

struct genpd_onecell_data {
	struct generic_pm_domain **domains;
	unsigned int num_domains;
	genpd_xlate_t xlate;
};

#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
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);
int of_genpd_add_device(struct of_phandle_args *args, struct device *dev);
int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
			   struct of_phandle_args *subdomain_spec);
int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
			      struct of_phandle_args *subdomain_spec);
struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
int of_genpd_parse_idle_states(struct device_node *dn,
			       struct genpd_power_state **states, int *n);
unsigned int pm_genpd_opp_to_performance_state(struct device *genpd_dev,
					       struct dev_pm_opp *opp);

int genpd_dev_pm_attach(struct device *dev);
struct device *genpd_dev_pm_attach_by_id(struct device *dev,
					 unsigned int index);
struct device *genpd_dev_pm_attach_by_name(struct device *dev,
					   const char *name);
#else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
static inline int of_genpd_add_provider_simple(struct device_node *np,
					struct generic_pm_domain *genpd)
{
	return -EOPNOTSUPP;
}

static inline int of_genpd_add_provider_onecell(struct device_node *np,
					struct genpd_onecell_data *data)
{
	return -EOPNOTSUPP;
}

static inline void of_genpd_del_provider(struct device_node *np) {}

static inline int of_genpd_add_device(struct of_phandle_args *args,
				      struct device *dev)
{
	return -ENODEV;
}

static inline int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
					 struct of_phandle_args *subdomain_spec)
{
	return -ENODEV;
}

static inline int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
					struct of_phandle_args *subdomain_spec)
{
	return -ENODEV;
}

static inline int of_genpd_parse_idle_states(struct device_node *dn,
			struct genpd_power_state **states, int *n)
{
	return -ENODEV;
}

static inline unsigned int
pm_genpd_opp_to_performance_state(struct device *genpd_dev,
				  struct dev_pm_opp *opp)
{
	return 0;
}

static inline int genpd_dev_pm_attach(struct device *dev)
{
	return 0;
}

static inline struct device *genpd_dev_pm_attach_by_id(struct device *dev,
						       unsigned int index)
{
	return NULL;
}

static inline struct device *genpd_dev_pm_attach_by_name(struct device *dev,
							 const char *name)
{
	return NULL;
}

static inline
struct generic_pm_domain *of_genpd_remove_last(struct device_node *np)
{
	return ERR_PTR(-EOPNOTSUPP);
}
#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */

#ifdef CONFIG_PM
int dev_pm_domain_attach(struct device *dev, bool power_on);
struct device *dev_pm_domain_attach_by_id(struct device *dev,
					  unsigned int index);
struct device *dev_pm_domain_attach_by_name(struct device *dev,
					    const char *name);
void dev_pm_domain_detach(struct device *dev, bool power_off);
int dev_pm_domain_start(struct device *dev);
void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd);
#else
static inline int dev_pm_domain_attach(struct device *dev, bool power_on)
{
	return 0;
}
static inline struct device *dev_pm_domain_attach_by_id(struct device *dev,
							unsigned int index)
{
	return NULL;
}
static inline struct device *dev_pm_domain_attach_by_name(struct device *dev,
							  const char *name)
{
	return NULL;
}
static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
static inline int dev_pm_domain_start(struct device *dev)
{
	return 0;
}
static inline void dev_pm_domain_set(struct device *dev,
				     struct dev_pm_domain *pd) {}
#endif

#endif /* _LINUX_PM_DOMAIN_H */
Commit	Line	Data
55716d26	1	/* SPDX-License-Identifier: GPL-2.0-only */
f721889f RW	2	/*
	3	* pm_domain.h - Definitions and headers related to device power domains.
	4	*
	5	* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
f721889f RW	6	*/
	7
	8	#ifndef _LINUX_PM_DOMAIN_H
	9	#define _LINUX_PM_DOMAIN_H
	10
	11	#include <linux/device.h>
67e3242e	12	#include <linux/ktime.h>
313162d0 PG	13	#include <linux/mutex.h>
313162d0 PG	14	#include <linux/pm.h>
4f042cda	15	#include <linux/err.h>
c8aa130b	16	#include <linux/of.h>
6ff7bb0d	17	#include <linux/notifier.h>
d716f479	18	#include <linux/spinlock.h>
eb594b73	19	#include <linux/cpumask.h>
f721889f	20
e5089c2c UH	21	/*
	22	* Flags to control the behaviour of a genpd.
	23	*
	24	* These flags may be set in the struct generic_pm_domain's flags field by a
	25	* genpd backend driver. The flags must be set before it calls pm_genpd_init(),
	26	* which initializes a genpd.
	27	*
	28	* GENPD_FLAG_PM_CLK: Instructs genpd to use the PM clk framework,
	29	* while powering on/off attached devices.
	30	*
	31	* GENPD_FLAG_IRQ_SAFE: This informs genpd that its backend callbacks,
	32	* ->power_on\|off(), doesn't sleep. Hence, these
	33	* can be invoked from within atomic context, which
	34	* enables genpd to power on/off the PM domain,
	35	* even when pm_runtime_is_irq_safe() returns true,
	36	* for any of its attached devices. Note that, a
	37	* genpd having this flag set, requires its
	38	* masterdomains to also have it set.
	39	*
	40	* GENPD_FLAG_ALWAYS_ON: Instructs genpd to always keep the PM domain
	41	* powered on.
	42	*
	43	* GENPD_FLAG_ACTIVE_WAKEUP: Instructs genpd to keep the PM domain powered
	44	* on, in case any of its attached devices is used
	45	* in the wakeup path to serve system wakeups.
eb594b73 UH	46	*
	47	* GENPD_FLAG_CPU_DOMAIN: Instructs genpd that it should expect to get
	48	* devices attached, which may belong to CPUs or
	49	* possibly have subdomains with CPUs attached.
	50	* This flag enables the genpd backend driver to
	51	* deploy idle power management support for CPUs
	52	* and groups of CPUs. Note that, the backend
	53	* driver must then comply with the so called,
	54	* last-man-standing algorithm, for the CPUs in the
	55	* PM domain.
ed61e18a LC	56	*
	57	* GENPD_FLAG_RPM_ALWAYS_ON: Instructs genpd to always keep the PM domain
	58	* powered on except for system suspend.
c79aa080 LI	59	*
	60	* GENPD_FLAG_MIN_RESIDENCY: Enable the genpd governor to consider its
	61	* components' next wakeup when determining the
	62	* optimal idle state.
e5089c2c UH	63	*/
	64	#define GENPD_FLAG_PM_CLK (1U << 0)
	65	#define GENPD_FLAG_IRQ_SAFE (1U << 1)
	66	#define GENPD_FLAG_ALWAYS_ON (1U << 2)
	67	#define GENPD_FLAG_ACTIVE_WAKEUP (1U << 3)
eb594b73	68	#define GENPD_FLAG_CPU_DOMAIN (1U << 4)
ed61e18a	69	#define GENPD_FLAG_RPM_ALWAYS_ON (1U << 5)
c79aa080	70	#define GENPD_FLAG_MIN_RESIDENCY (1U << 6)
c11f6f5b	71
17b75eca	72	enum gpd_status {
49f618e1 UH	73	GENPD_STATE_ON = 0, /* PM domain is on */
49f618e1 UH	74	GENPD_STATE_OFF, /* PM domain is off */
17b75eca	75	};
596ba34b	76
d4f81383 UH	77	enum genpd_notication {
	78	GENPD_NOTIFY_PRE_OFF = 0,
	79	GENPD_NOTIFY_OFF,
	80	GENPD_NOTIFY_PRE_ON,
	81	GENPD_NOTIFY_ON,
	82	};
	83
f721889f RW	84	struct dev_power_governor {
f721889f RW	85	bool (power_down_ok)(struct dev_pm_domain domain);
9df3921e	86	bool (suspend_ok)(struct device dev);
f721889f RW	87	};
f721889f RW	88
d5e4cbfe RW	89	struct gpd_dev_ops {
	90	int (start)(struct device dev);
	91	int (stop)(struct device dev);
d5e4cbfe RW	92	};
d5e4cbfe RW	93
fc5cbf0c AH	94	struct genpd_power_state {
	95	s64 power_off_latency_ns;
	96	s64 power_on_latency_ns;
405f7226	97	s64 residency_ns;
c6a113b5 LI	98	u64 usage;
c6a113b5 LI	99	u64 rejected;
0c9b694a	100	struct fwnode_handle *fwnode;
bd40cbb0	101	u64 idle_time;
49a27e27	102	void *data;
fc5cbf0c AH	103	};
fc5cbf0c AH	104
35241d12	105	struct genpd_lock_ops;
6e41766a	106	struct dev_pm_opp;
1067ae3e	107	struct opp_table;
35241d12	108
f721889f	109	struct generic_pm_domain {
401ea157	110	struct device dev;
f721889f	111	struct dev_pm_domain domain; /* PM domain operations */
5125bbf3	112	struct list_head gpd_list_node; /* Node in the global PM domains list */
8d87ae48	113	struct list_head parent_links; /* Links with PM domain as a parent */
afb0367a	114	struct list_head child_links; /* Links with PM domain as a child */
f721889f	115	struct list_head dev_list; /* List of devices */
f721889f RW	116	struct dev_power_governor *gov;
f721889f RW	117	struct work_struct power_off_work;
de0aa06d JH	118	struct fwnode_handle provider; / Identity of the domain provider */
de0aa06d JH	119	bool has_provider;
d07e9c17	120	const char *name;
c4bb3160	121	atomic_t sd_count; /* Number of subdomains with power "on" */
17b75eca	122	enum gpd_status status; /* Current state of the domain */
596ba34b RW	123	unsigned int device_count; /* Number of devices */
	124	unsigned int suspended_count; /* System suspend device counter */
	125	unsigned int prepared_count; /* Suspend counter of prepared devices */
42f6284a	126	unsigned int performance_state; /* Aggregated max performance state */
eb594b73	127	cpumask_var_t cpus; /* A cpumask of the attached CPUs */
f721889f RW	128	int (power_off)(struct generic_pm_domain domain);
f721889f RW	129	int (power_on)(struct generic_pm_domain domain);
d4f81383	130	struct raw_notifier_head power_notifiers; /* Power on/off notifiers */
1067ae3e	131	struct opp_table opp_table; / OPP table of the genpd */
6e41766a VK	132	unsigned int (opp_to_performance_state)(struct generic_pm_domain genpd,
6e41766a VK	133	struct dev_pm_opp *opp);
42f6284a VK	134	int (set_performance_state)(struct generic_pm_domain genpd,
42f6284a VK	135	unsigned int state);
d5e4cbfe	136	struct gpd_dev_ops dev_ops;
221e9b58	137	s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
c79aa080	138	ktime_t next_wakeup; /* Maintained by the domain governor */
6ff7bb0d RW	139	bool max_off_time_changed;
6ff7bb0d RW	140	bool cached_power_down_ok;
e9499968	141	bool cached_power_down_state_idx;
c16561e8 UH	142	int (attach_dev)(struct generic_pm_domain domain,
	143	struct device *dev);
	144	void (detach_dev)(struct generic_pm_domain domain,
	145	struct device *dev);
c11f6f5b	146	unsigned int flags; /* Bit field of configs for genpd */
59d65b73	147	struct genpd_power_state *states;
49a27e27 UH	148	void (free_states)(struct genpd_power_state states,
49a27e27 UH	149	unsigned int state_count);
fc5cbf0c AH	150	unsigned int state_count; /* number of states */
fc5cbf0c AH	151	unsigned int state_idx; /* state that genpd will go to when off */
bd40cbb0 UH	152	u64 on_time;
bd40cbb0 UH	153	u64 accounting_time;
35241d12	154	const struct genpd_lock_ops *lock_ops;
d716f479 LI	155	union {
	156	struct mutex mlock;
	157	struct {
	158	spinlock_t slock;
	159	unsigned long lock_flags;
	160	};
	161	};
fc5cbf0c	162
f721889f RW	163	};
f721889f RW	164
596ba34b RW	165	static inline struct generic_pm_domain pd_to_genpd(struct dev_pm_domain pd)
	166	{
	167	return container_of(pd, struct generic_pm_domain, domain);
	168	}
	169
5063ce15	170	struct gpd_link {
8d87ae48 KC	171	struct generic_pm_domain *parent;
	172	struct list_head parent_node;
	173	struct generic_pm_domain *child;
	174	struct list_head child_node;
18edf49c VK	175
	176	/* Sub-domain's per-master domain performance state */
	177	unsigned int performance_state;
	178	unsigned int prev_performance_state;
5063ce15 RW	179	};
5063ce15 RW	180
b02c999a	181	struct gpd_timing_data {
2b1d88cd UH	182	s64 suspend_latency_ns;
2b1d88cd UH	183	s64 resume_latency_ns;
a5bef810	184	s64 effective_constraint_ns;
6ff7bb0d	185	bool constraint_changed;
9df3921e	186	bool cached_suspend_ok;
b02c999a RW	187	};
b02c999a RW	188
00e7c295 UH	189	struct pm_domain_data {
	190	struct list_head list_node;
	191	struct device *dev;
	192	};
	193
cd0ea672 RW	194	struct generic_pm_domain_data {
cd0ea672 RW	195	struct pm_domain_data base;
b02c999a	196	struct gpd_timing_data td;
6ff7bb0d	197	struct notifier_block nb;
d4f81383	198	struct notifier_block *power_nb;
f9ccd7c3	199	int cpu;
42f6284a	200	unsigned int performance_state;
c016baf7	201	unsigned int default_pstate;
5937c3ce	202	unsigned int rpm_pstate;
67e3242e	203	ktime_t next_wakeup;
a5ea7a0f	204	void *data;
cd0ea672 RW	205	};
cd0ea672 RW	206
9b4f617b	207	#ifdef CONFIG_PM_GENERIC_DOMAINS
cd0ea672 RW	208	static inline struct generic_pm_domain_data to_gpd_data(struct pm_domain_data pdd)
	209	{
	210	return container_of(pdd, struct generic_pm_domain_data, base);
	211	}
	212
d5e4cbfe RW	213	static inline struct generic_pm_domain_data dev_gpd_data(struct device dev)
	214	{
	215	return to_gpd_data(dev->power.subsys_data->domain_data);
	216	}
	217
1a7a6707	218	int pm_genpd_add_device(struct generic_pm_domain genpd, struct device dev);
924f4486	219	int pm_genpd_remove_device(struct device *dev);
781b9d6b	220	int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
0d1e16c6	221	struct generic_pm_domain *subdomain);
781b9d6b	222	int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
0d1e16c6	223	struct generic_pm_domain *subdomain);
781b9d6b UH	224	int pm_genpd_init(struct generic_pm_domain *genpd,
	225	struct dev_power_governor *gov, bool is_off);
	226	int pm_genpd_remove(struct generic_pm_domain *genpd);
	227	int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state);
d4f81383 UH	228	int dev_pm_genpd_add_notifier(struct device dev, struct notifier_block nb);
d4f81383 UH	229	int dev_pm_genpd_remove_notifier(struct device *dev);
67e3242e	230	void dev_pm_genpd_set_next_wakeup(struct device *dev, ktime_t next);
b02c999a	231
ae3c511c	232	extern struct dev_power_governor simple_qos_governor;
925b44a2	233	extern struct dev_power_governor pm_domain_always_on_gov;
e9499968 UH	234	#ifdef CONFIG_CPU_IDLE
	235	extern struct dev_power_governor pm_domain_cpu_gov;
	236	#endif
f721889f	237	#else
b02c999a	238
b642631d MD	239	static inline struct generic_pm_domain_data dev_gpd_data(struct device dev)
	240	{
	241	return ERR_PTR(-ENOSYS);
	242	}
1a7a6707 UH	243	static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
1a7a6707 UH	244	struct device *dev)
b02c999a RW	245	{
	246	return -ENOSYS;
	247	}
924f4486	248	static inline int pm_genpd_remove_device(struct device *dev)
f721889f RW	249	{
	250	return -ENOSYS;
	251	}
	252	static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
0d1e16c6	253	struct generic_pm_domain *subdomain)
f721889f RW	254	{
	255	return -ENOSYS;
	256	}
	257	static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
0d1e16c6	258	struct generic_pm_domain *subdomain)
f721889f RW	259	{
	260	return -ENOSYS;
	261	}
7eb231c3 UH	262	static inline int pm_genpd_init(struct generic_pm_domain *genpd,
7eb231c3 UH	263	struct dev_power_governor *gov, bool is_off)
b02c999a	264	{
7eb231c3	265	return -ENOSYS;
b02c999a	266	}
3fe57710 JH	267	static inline int pm_genpd_remove(struct generic_pm_domain *genpd)
3fe57710 JH	268	{
a94ef811	269	return -EOPNOTSUPP;
3fe57710	270	}
16d0bf18	271
42f6284a VK	272	static inline int dev_pm_genpd_set_performance_state(struct device *dev,
	273	unsigned int state)
	274	{
a94ef811	275	return -EOPNOTSUPP;
42f6284a VK	276	}
42f6284a VK	277
d4f81383 UH	278	static inline int dev_pm_genpd_add_notifier(struct device *dev,
	279	struct notifier_block *nb)
	280	{
a94ef811	281	return -EOPNOTSUPP;
d4f81383 UH	282	}
	283
	284	static inline int dev_pm_genpd_remove_notifier(struct device *dev)
	285	{
a94ef811	286	return -EOPNOTSUPP;
d4f81383 UH	287	}
d4f81383 UH	288
67e3242e LI	289	static inline void dev_pm_genpd_set_next_wakeup(struct device *dev, ktime_t next)
	290	{ }
	291
16d0bf18 GU	292	#define simple_qos_governor ((struct dev_power_governor )(NULL))
16d0bf18 GU	293	#define pm_domain_always_on_gov ((struct dev_power_governor )(NULL))
17f2ae7f RW	294	#endif
17f2ae7f RW	295
77f827de	296	#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
fc519890 UH	297	void dev_pm_genpd_suspend(struct device *dev);
fc519890 UH	298	void dev_pm_genpd_resume(struct device *dev);
77f827de	299	#else
fc519890 UH	300	static inline void dev_pm_genpd_suspend(struct device *dev) {}
fc519890 UH	301	static inline void dev_pm_genpd_resume(struct device *dev) {}
77f827de RW	302	#endif
77f827de RW	303
aa42240a TF	304	/* OF PM domain providers */
	305	struct of_device_id;
	306
40845524 TR	307	typedef struct generic_pm_domain (genpd_xlate_t)(struct of_phandle_args *args,
	308	void *data);
	309
aa42240a TF	310	struct genpd_onecell_data {
	311	struct generic_pm_domain **domains;
	312	unsigned int num_domains;
40845524	313	genpd_xlate_t xlate;
aa42240a TF	314	};
aa42240a TF	315
aa42240a	316	#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
892ebdcc JH	317	int of_genpd_add_provider_simple(struct device_node *np,
	318	struct generic_pm_domain *genpd);
	319	int of_genpd_add_provider_onecell(struct device_node *np,
	320	struct genpd_onecell_data *data);
aa42240a	321	void of_genpd_del_provider(struct device_node *np);
781b9d6b	322	int of_genpd_add_device(struct of_phandle_args args, struct device dev);
0d1e16c6 UH	323	int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
0d1e16c6 UH	324	struct of_phandle_args *subdomain_spec);
dedd1492 UH	325	int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
dedd1492 UH	326	struct of_phandle_args *subdomain_spec);
781b9d6b UH	327	struct generic_pm_domain of_genpd_remove_last(struct device_node np);
	328	int of_genpd_parse_idle_states(struct device_node *dn,
	329	struct genpd_power_state *states, int n);
e38f89d3 VK	330	unsigned int pm_genpd_opp_to_performance_state(struct device *genpd_dev,
e38f89d3 VK	331	struct dev_pm_opp *opp);
aa42240a TF	332
aa42240a TF	333	int genpd_dev_pm_attach(struct device *dev);
3c095f32 UH	334	struct device genpd_dev_pm_attach_by_id(struct device dev,
3c095f32 UH	335	unsigned int index);
5d6be70a	336	struct device genpd_dev_pm_attach_by_name(struct device dev,
7416f1f2	337	const char *name);
aa42240a	338	#else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
892ebdcc JH	339	static inline int of_genpd_add_provider_simple(struct device_node *np,
892ebdcc JH	340	struct generic_pm_domain *genpd)
aa42240a	341	{
a94ef811	342	return -EOPNOTSUPP;
892ebdcc JH	343	}
	344
	345	static inline int of_genpd_add_provider_onecell(struct device_node *np,
	346	struct genpd_onecell_data *data)
	347	{
a94ef811	348	return -EOPNOTSUPP;
aa42240a	349	}
aa42240a	350
892ebdcc	351	static inline void of_genpd_del_provider(struct device_node *np) {}
aa42240a	352
ec69572b JH	353	static inline int of_genpd_add_device(struct of_phandle_args *args,
	354	struct device *dev)
	355	{
	356	return -ENODEV;
	357	}
	358
0d1e16c6 UH	359	static inline int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
0d1e16c6 UH	360	struct of_phandle_args *subdomain_spec)
ec69572b JH	361	{
	362	return -ENODEV;
	363	}
	364
dedd1492 UH	365	static inline int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
	366	struct of_phandle_args *subdomain_spec)
	367	{
	368	return -ENODEV;
	369	}
	370
30f60428 LI	371	static inline int of_genpd_parse_idle_states(struct device_node *dn,
	372	struct genpd_power_state *states, int n)
	373	{
	374	return -ENODEV;
	375	}
	376
e38f89d3 VK	377	static inline unsigned int
	378	pm_genpd_opp_to_performance_state(struct device *genpd_dev,
	379	struct dev_pm_opp *opp)
	380	{
	381	return 0;
	382	}
	383
aa42240a TF	384	static inline int genpd_dev_pm_attach(struct device *dev)
aa42240a TF	385	{
919b7308	386	return 0;
aa42240a	387	}
17926551	388
3c095f32 UH	389	static inline struct device genpd_dev_pm_attach_by_id(struct device dev,
	390	unsigned int index)
	391	{
	392	return NULL;
	393	}
	394
5d6be70a	395	static inline struct device genpd_dev_pm_attach_by_name(struct device dev,
7416f1f2	396	const char *name)
5d6be70a UH	397	{
	398	return NULL;
	399	}
	400
17926551 JH	401	static inline
	402	struct generic_pm_domain of_genpd_remove_last(struct device_node np)
	403	{
a94ef811	404	return ERR_PTR(-EOPNOTSUPP);
17926551	405	}
aa42240a TF	406	#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
aa42240a TF	407
f48c767c	408	#ifdef CONFIG_PM
781b9d6b	409	int dev_pm_domain_attach(struct device *dev, bool power_on);
82e12d9e UH	410	struct device dev_pm_domain_attach_by_id(struct device dev,
82e12d9e UH	411	unsigned int index);
27dceb81	412	struct device dev_pm_domain_attach_by_name(struct device dev,
eeb35df0	413	const char *name);
781b9d6b	414	void dev_pm_domain_detach(struct device *dev, bool power_off);
ca765a8c	415	int dev_pm_domain_start(struct device *dev);
781b9d6b	416	void dev_pm_domain_set(struct device dev, struct dev_pm_domain pd);
f48c767c UH	417	#else
	418	static inline int dev_pm_domain_attach(struct device *dev, bool power_on)
	419	{
919b7308	420	return 0;
f48c767c	421	}
82e12d9e UH	422	static inline struct device dev_pm_domain_attach_by_id(struct device dev,
	423	unsigned int index)
	424	{
	425	return NULL;
	426	}
27dceb81	427	static inline struct device dev_pm_domain_attach_by_name(struct device dev,
eeb35df0	428	const char *name)
27dceb81 UH	429	{
	430	return NULL;
	431	}
f48c767c	432	static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
ca765a8c UH	433	static inline int dev_pm_domain_start(struct device *dev)
	434	{
	435	return 0;
	436	}
989561de TV	437	static inline void dev_pm_domain_set(struct device *dev,
989561de TV	438	struct dev_pm_domain *pd) {}
f48c767c UH	439	#endif
f48c767c UH	440
f721889f	441	#endif /* _LINUX_PM_DOMAIN_H */