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

/*
 * pm_domain.h - Definitions and headers related to device power domains.
 *
 * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
 *
 * This file is released under the GPLv2.
 */

#ifndef _LINUX_PM_DOMAIN_H
#define _LINUX_PM_DOMAIN_H

#include <linux/device.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>

/*
 * 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.
 */
#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)

enum gpd_status {
	GPD_STATE_ACTIVE = 0,	/* PM domain is active */
	GPD_STATE_POWER_OFF,	/* PM domain is off */
};

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;
	struct fwnode_handle *fwnode;
	ktime_t idle_time;
};

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 master_links;	/* Links with PM domain as a master */
	struct list_head slave_links;	/* Links with PM domain as a slave */
	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 */
	int (*power_off)(struct generic_pm_domain *domain);
	int (*power_on)(struct generic_pm_domain *domain);
	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. */
	bool max_off_time_changed;
	bool cached_power_down_ok;
	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;
	unsigned int state_count; /* number of states */
	unsigned int state_idx; /* state that genpd will go to when off */
	void *free; /* Free the state that was allocated for default */
	ktime_t on_time;
	ktime_t 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 *master;
	struct list_head master_node;
	struct generic_pm_domain *slave;
	struct list_head slave_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;
	unsigned int performance_state;
	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 *new_subdomain);
int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
			      struct generic_pm_domain *target);
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);

extern struct dev_power_governor simple_qos_governor;
extern struct dev_power_governor pm_domain_always_on_gov;
#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 *new_sd)
{
	return -ENOSYS;
}
static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
					    struct generic_pm_domain *target)
{
	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 -ENOTSUPP;
}

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

#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 pm_genpd_syscore_poweroff(struct device *dev);
void pm_genpd_syscore_poweron(struct device *dev);
#else
static inline void pm_genpd_syscore_poweroff(struct device *dev) {}
static inline void pm_genpd_syscore_poweron(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,
			   struct of_phandle_args *new_subdomain);
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,
					   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 -ENOTSUPP;
}

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

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,
					 struct of_phandle_args *new_subdomain)
{
	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,
							 char *name)
{
	return NULL;
}

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
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,
					    char *name);
void dev_pm_domain_detach(struct device *dev, bool power_off);
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,
							  char *name)
{
	return NULL;
}
static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
static inline void dev_pm_domain_set(struct device *dev,
				     struct dev_pm_domain *pd) {}
#endif

#endif /* _LINUX_PM_DOMAIN_H */
Commit	Line	Data
f721889f RW	1	/*
	2	* pm_domain.h - Definitions and headers related to device power domains.
	3	*
	4	* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
	5	*
	6	* This file is released under the GPLv2.
	7	*/
	8
	9	#ifndef _LINUX_PM_DOMAIN_H
	10	#define _LINUX_PM_DOMAIN_H
	11
	12	#include <linux/device.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>
f721889f	19
e5089c2c UH	20	/*
	21	* Flags to control the behaviour of a genpd.
	22	*
	23	* These flags may be set in the struct generic_pm_domain's flags field by a
	24	* genpd backend driver. The flags must be set before it calls pm_genpd_init(),
	25	* which initializes a genpd.
	26	*
	27	* GENPD_FLAG_PM_CLK: Instructs genpd to use the PM clk framework,
	28	* while powering on/off attached devices.
	29	*
	30	* GENPD_FLAG_IRQ_SAFE: This informs genpd that its backend callbacks,
	31	* ->power_on\|off(), doesn't sleep. Hence, these
	32	* can be invoked from within atomic context, which
	33	* enables genpd to power on/off the PM domain,
	34	* even when pm_runtime_is_irq_safe() returns true,
	35	* for any of its attached devices. Note that, a
	36	* genpd having this flag set, requires its
	37	* masterdomains to also have it set.
	38	*
	39	* GENPD_FLAG_ALWAYS_ON: Instructs genpd to always keep the PM domain
	40	* powered on.
	41	*
	42	* GENPD_FLAG_ACTIVE_WAKEUP: Instructs genpd to keep the PM domain powered
	43	* on, in case any of its attached devices is used
	44	* in the wakeup path to serve system wakeups.
	45	*/
	46	#define GENPD_FLAG_PM_CLK (1U << 0)
	47	#define GENPD_FLAG_IRQ_SAFE (1U << 1)
	48	#define GENPD_FLAG_ALWAYS_ON (1U << 2)
	49	#define GENPD_FLAG_ACTIVE_WAKEUP (1U << 3)
c11f6f5b	50
17b75eca RW	51	enum gpd_status {
17b75eca RW	52	GPD_STATE_ACTIVE = 0, /* PM domain is active */
17b75eca RW	53	GPD_STATE_POWER_OFF, /* PM domain is off */
17b75eca RW	54	};
596ba34b	55
f721889f RW	56	struct dev_power_governor {
f721889f RW	57	bool (power_down_ok)(struct dev_pm_domain domain);
9df3921e	58	bool (suspend_ok)(struct device dev);
f721889f RW	59	};
f721889f RW	60
d5e4cbfe RW	61	struct gpd_dev_ops {
	62	int (start)(struct device dev);
	63	int (stop)(struct device dev);
d5e4cbfe RW	64	};
d5e4cbfe RW	65
fc5cbf0c AH	66	struct genpd_power_state {
	67	s64 power_off_latency_ns;
	68	s64 power_on_latency_ns;
405f7226	69	s64 residency_ns;
0c9b694a	70	struct fwnode_handle *fwnode;
afece3ab	71	ktime_t idle_time;
fc5cbf0c AH	72	};
fc5cbf0c AH	73
35241d12	74	struct genpd_lock_ops;
6e41766a	75	struct dev_pm_opp;
1067ae3e	76	struct opp_table;
35241d12	77
f721889f	78	struct generic_pm_domain {
401ea157	79	struct device dev;
f721889f	80	struct dev_pm_domain domain; /* PM domain operations */
5125bbf3	81	struct list_head gpd_list_node; /* Node in the global PM domains list */
5063ce15 RW	82	struct list_head master_links; /* Links with PM domain as a master */
5063ce15 RW	83	struct list_head slave_links; /* Links with PM domain as a slave */
f721889f	84	struct list_head dev_list; /* List of devices */
f721889f RW	85	struct dev_power_governor *gov;
f721889f RW	86	struct work_struct power_off_work;
de0aa06d JH	87	struct fwnode_handle provider; / Identity of the domain provider */
de0aa06d JH	88	bool has_provider;
d07e9c17	89	const char *name;
c4bb3160	90	atomic_t sd_count; /* Number of subdomains with power "on" */
17b75eca	91	enum gpd_status status; /* Current state of the domain */
596ba34b RW	92	unsigned int device_count; /* Number of devices */
	93	unsigned int suspended_count; /* System suspend device counter */
	94	unsigned int prepared_count; /* Suspend counter of prepared devices */
42f6284a	95	unsigned int performance_state; /* Aggregated max performance state */
f721889f RW	96	int (power_off)(struct generic_pm_domain domain);
f721889f RW	97	int (power_on)(struct generic_pm_domain domain);
1067ae3e	98	struct opp_table opp_table; / OPP table of the genpd */
6e41766a VK	99	unsigned int (opp_to_performance_state)(struct generic_pm_domain genpd,
6e41766a VK	100	struct dev_pm_opp *opp);
42f6284a VK	101	int (set_performance_state)(struct generic_pm_domain genpd,
42f6284a VK	102	unsigned int state);
d5e4cbfe	103	struct gpd_dev_ops dev_ops;
221e9b58	104	s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
6ff7bb0d RW	105	bool max_off_time_changed;
6ff7bb0d RW	106	bool cached_power_down_ok;
c16561e8 UH	107	int (attach_dev)(struct generic_pm_domain domain,
	108	struct device *dev);
	109	void (detach_dev)(struct generic_pm_domain domain,
	110	struct device *dev);
c11f6f5b	111	unsigned int flags; /* Bit field of configs for genpd */
59d65b73	112	struct genpd_power_state *states;
fc5cbf0c AH	113	unsigned int state_count; /* number of states */
fc5cbf0c AH	114	unsigned int state_idx; /* state that genpd will go to when off */
59d65b73	115	void free; / Free the state that was allocated for default */
afece3ab TG	116	ktime_t on_time;
afece3ab TG	117	ktime_t accounting_time;
35241d12	118	const struct genpd_lock_ops *lock_ops;
d716f479 LI	119	union {
	120	struct mutex mlock;
	121	struct {
	122	spinlock_t slock;
	123	unsigned long lock_flags;
	124	};
	125	};
fc5cbf0c	126
f721889f RW	127	};
f721889f RW	128
596ba34b RW	129	static inline struct generic_pm_domain pd_to_genpd(struct dev_pm_domain pd)
	130	{
	131	return container_of(pd, struct generic_pm_domain, domain);
	132	}
	133
5063ce15 RW	134	struct gpd_link {
	135	struct generic_pm_domain *master;
	136	struct list_head master_node;
	137	struct generic_pm_domain *slave;
	138	struct list_head slave_node;
18edf49c VK	139
	140	/* Sub-domain's per-master domain performance state */
	141	unsigned int performance_state;
	142	unsigned int prev_performance_state;
5063ce15 RW	143	};
5063ce15 RW	144
b02c999a	145	struct gpd_timing_data {
2b1d88cd UH	146	s64 suspend_latency_ns;
2b1d88cd UH	147	s64 resume_latency_ns;
a5bef810	148	s64 effective_constraint_ns;
6ff7bb0d	149	bool constraint_changed;
9df3921e	150	bool cached_suspend_ok;
b02c999a RW	151	};
b02c999a RW	152
00e7c295 UH	153	struct pm_domain_data {
	154	struct list_head list_node;
	155	struct device *dev;
	156	};
	157
cd0ea672 RW	158	struct generic_pm_domain_data {
cd0ea672 RW	159	struct pm_domain_data base;
b02c999a	160	struct gpd_timing_data td;
6ff7bb0d	161	struct notifier_block nb;
42f6284a	162	unsigned int performance_state;
a5ea7a0f	163	void *data;
cd0ea672 RW	164	};
cd0ea672 RW	165
9b4f617b	166	#ifdef CONFIG_PM_GENERIC_DOMAINS
cd0ea672 RW	167	static inline struct generic_pm_domain_data to_gpd_data(struct pm_domain_data pdd)
	168	{
	169	return container_of(pdd, struct generic_pm_domain_data, base);
	170	}
	171
d5e4cbfe RW	172	static inline struct generic_pm_domain_data dev_gpd_data(struct device dev)
	173	{
	174	return to_gpd_data(dev->power.subsys_data->domain_data);
	175	}
	176
1a7a6707	177	int pm_genpd_add_device(struct generic_pm_domain genpd, struct device dev);
924f4486	178	int pm_genpd_remove_device(struct device *dev);
781b9d6b UH	179	int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
	180	struct generic_pm_domain *new_subdomain);
	181	int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
	182	struct generic_pm_domain *target);
	183	int pm_genpd_init(struct generic_pm_domain *genpd,
	184	struct dev_power_governor *gov, bool is_off);
	185	int pm_genpd_remove(struct generic_pm_domain *genpd);
	186	int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state);
b02c999a	187
ae3c511c	188	extern struct dev_power_governor simple_qos_governor;
925b44a2	189	extern struct dev_power_governor pm_domain_always_on_gov;
f721889f	190	#else
b02c999a	191
b642631d MD	192	static inline struct generic_pm_domain_data dev_gpd_data(struct device dev)
	193	{
	194	return ERR_PTR(-ENOSYS);
	195	}
1a7a6707 UH	196	static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
1a7a6707 UH	197	struct device *dev)
b02c999a RW	198	{
	199	return -ENOSYS;
	200	}
924f4486	201	static inline int pm_genpd_remove_device(struct device *dev)
f721889f RW	202	{
	203	return -ENOSYS;
	204	}
	205	static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
	206	struct generic_pm_domain *new_sd)
	207	{
	208	return -ENOSYS;
	209	}
	210	static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
	211	struct generic_pm_domain *target)
	212	{
	213	return -ENOSYS;
	214	}
7eb231c3 UH	215	static inline int pm_genpd_init(struct generic_pm_domain *genpd,
7eb231c3 UH	216	struct dev_power_governor *gov, bool is_off)
b02c999a	217	{
7eb231c3	218	return -ENOSYS;
b02c999a	219	}
3fe57710 JH	220	static inline int pm_genpd_remove(struct generic_pm_domain *genpd)
	221	{
	222	return -ENOTSUPP;
	223	}
16d0bf18	224
42f6284a VK	225	static inline int dev_pm_genpd_set_performance_state(struct device *dev,
	226	unsigned int state)
	227	{
	228	return -ENOTSUPP;
	229	}
	230
16d0bf18 GU	231	#define simple_qos_governor ((struct dev_power_governor )(NULL))
16d0bf18 GU	232	#define pm_domain_always_on_gov ((struct dev_power_governor )(NULL))
17f2ae7f RW	233	#endif
17f2ae7f RW	234
77f827de	235	#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
781b9d6b UH	236	void pm_genpd_syscore_poweroff(struct device *dev);
781b9d6b UH	237	void pm_genpd_syscore_poweron(struct device *dev);
77f827de	238	#else
d47e6464 UH	239	static inline void pm_genpd_syscore_poweroff(struct device *dev) {}
d47e6464 UH	240	static inline void pm_genpd_syscore_poweron(struct device *dev) {}
77f827de RW	241	#endif
77f827de RW	242
aa42240a TF	243	/* OF PM domain providers */
	244	struct of_device_id;
	245
40845524 TR	246	typedef struct generic_pm_domain (genpd_xlate_t)(struct of_phandle_args *args,
	247	void *data);
	248
aa42240a TF	249	struct genpd_onecell_data {
	250	struct generic_pm_domain **domains;
	251	unsigned int num_domains;
40845524	252	genpd_xlate_t xlate;
aa42240a TF	253	};
aa42240a TF	254
aa42240a	255	#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
892ebdcc JH	256	int of_genpd_add_provider_simple(struct device_node *np,
	257	struct generic_pm_domain *genpd);
	258	int of_genpd_add_provider_onecell(struct device_node *np,
	259	struct genpd_onecell_data *data);
aa42240a	260	void of_genpd_del_provider(struct device_node *np);
781b9d6b UH	261	int of_genpd_add_device(struct of_phandle_args args, struct device dev);
	262	int of_genpd_add_subdomain(struct of_phandle_args *parent,
	263	struct of_phandle_args *new_subdomain);
	264	struct generic_pm_domain of_genpd_remove_last(struct device_node np);
	265	int of_genpd_parse_idle_states(struct device_node *dn,
	266	struct genpd_power_state *states, int n);
e38f89d3 VK	267	unsigned int pm_genpd_opp_to_performance_state(struct device *genpd_dev,
e38f89d3 VK	268	struct dev_pm_opp *opp);
aa42240a TF	269
aa42240a TF	270	int genpd_dev_pm_attach(struct device *dev);
3c095f32 UH	271	struct device genpd_dev_pm_attach_by_id(struct device dev,
3c095f32 UH	272	unsigned int index);
5d6be70a UH	273	struct device genpd_dev_pm_attach_by_name(struct device dev,
5d6be70a UH	274	char *name);
aa42240a	275	#else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
892ebdcc JH	276	static inline int of_genpd_add_provider_simple(struct device_node *np,
892ebdcc JH	277	struct generic_pm_domain *genpd)
aa42240a	278	{
892ebdcc JH	279	return -ENOTSUPP;
	280	}
	281
	282	static inline int of_genpd_add_provider_onecell(struct device_node *np,
	283	struct genpd_onecell_data *data)
	284	{
	285	return -ENOTSUPP;
aa42240a	286	}
aa42240a	287
892ebdcc	288	static inline void of_genpd_del_provider(struct device_node *np) {}
aa42240a	289
ec69572b JH	290	static inline int of_genpd_add_device(struct of_phandle_args *args,
	291	struct device *dev)
	292	{
	293	return -ENODEV;
	294	}
	295
	296	static inline int of_genpd_add_subdomain(struct of_phandle_args *parent,
	297	struct of_phandle_args *new_subdomain)
	298	{
	299	return -ENODEV;
	300	}
	301
30f60428 LI	302	static inline int of_genpd_parse_idle_states(struct device_node *dn,
	303	struct genpd_power_state *states, int n)
	304	{
	305	return -ENODEV;
	306	}
	307
e38f89d3 VK	308	static inline unsigned int
	309	pm_genpd_opp_to_performance_state(struct device *genpd_dev,
	310	struct dev_pm_opp *opp)
	311	{
	312	return 0;
	313	}
	314
aa42240a TF	315	static inline int genpd_dev_pm_attach(struct device *dev)
aa42240a TF	316	{
919b7308	317	return 0;
aa42240a	318	}
17926551	319
3c095f32 UH	320	static inline struct device genpd_dev_pm_attach_by_id(struct device dev,
	321	unsigned int index)
	322	{
	323	return NULL;
	324	}
	325
5d6be70a UH	326	static inline struct device genpd_dev_pm_attach_by_name(struct device dev,
	327	char *name)
	328	{
	329	return NULL;
	330	}
	331
17926551 JH	332	static inline
	333	struct generic_pm_domain of_genpd_remove_last(struct device_node np)
	334	{
	335	return ERR_PTR(-ENOTSUPP);
	336	}
aa42240a TF	337	#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
aa42240a TF	338
f48c767c	339	#ifdef CONFIG_PM
781b9d6b	340	int dev_pm_domain_attach(struct device *dev, bool power_on);
82e12d9e UH	341	struct device dev_pm_domain_attach_by_id(struct device dev,
82e12d9e UH	342	unsigned int index);
27dceb81 UH	343	struct device dev_pm_domain_attach_by_name(struct device dev,
27dceb81 UH	344	char *name);
781b9d6b UH	345	void dev_pm_domain_detach(struct device *dev, bool power_off);
781b9d6b UH	346	void dev_pm_domain_set(struct device dev, struct dev_pm_domain pd);
f48c767c UH	347	#else
	348	static inline int dev_pm_domain_attach(struct device *dev, bool power_on)
	349	{
919b7308	350	return 0;
f48c767c	351	}
82e12d9e UH	352	static inline struct device dev_pm_domain_attach_by_id(struct device dev,
	353	unsigned int index)
	354	{
	355	return NULL;
	356	}
27dceb81 UH	357	static inline struct device dev_pm_domain_attach_by_name(struct device dev,
	358	char *name)
	359	{
	360	return NULL;
	361	}
f48c767c	362	static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
989561de TV	363	static inline void dev_pm_domain_set(struct device *dev,
989561de TV	364	struct dev_pm_domain *pd) {}
f48c767c UH	365	#endif
f48c767c UH	366
f721889f	367	#endif /* _LINUX_PM_DOMAIN_H */