[mirror_ubuntu-artful-kernel.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/cpuidle.h>

/* Defines used for the flags field in the struct generic_pm_domain */
#define GENPD_FLAG_PM_CLK	(1U << 0) /* PM domain uses PM clk */

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 (*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);
	bool (*active_wakeup)(struct device *dev);
};

struct gpd_cpuidle_data {
	unsigned int saved_exit_latency;
	struct cpuidle_state *idle_state;
};

struct generic_pm_domain {
	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 mutex lock;
	struct dev_power_governor *gov;
	struct work_struct power_off_work;
	const 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 */
	unsigned int device_count;	/* Number of devices */
	unsigned int suspended_count;	/* System suspend device counter */
	unsigned int prepared_count;	/* Suspend counter of prepared devices */
	bool suspend_power_off;	/* Power status before system suspend */
	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 max_off_time_ns;	/* Maximum allowed "suspended" time. */
	bool max_off_time_changed;
	bool cached_power_down_ok;
	struct gpd_cpuidle_data *cpuidle_data;
	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 */
};

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;
};

struct gpd_timing_data {
	s64 stop_latency_ns;
	s64 start_latency_ns;
	s64 save_state_latency_ns;
	s64 restore_state_latency_ns;
	s64 effective_constraint_ns;
	bool constraint_changed;
	bool cached_stop_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;
};

#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);
}

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);

extern int __pm_genpd_name_add_device(const char *domain_name,
				      struct device *dev,
				      struct gpd_timing_data *td);

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_add_subdomain_names(const char *master_name,
					const char *subdomain_name);
extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
				     struct generic_pm_domain *target);
extern int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state);
extern int pm_genpd_name_attach_cpuidle(const char *name, int state);
extern int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd);
extern int pm_genpd_name_detach_cpuidle(const char *name);
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 int pm_genpd_name_poweron(const char *domain_name);
extern void pm_genpd_poweroff_unused(void);

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 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)
{
	return -ENOSYS;
}
static inline int __pm_genpd_name_add_device(const char *domain_name,
					     struct device *dev,
					     struct gpd_timing_data *td)
{
	return -ENOSYS;
}
static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd,
					 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_add_subdomain_names(const char *master_name,
					       const char *subdomain_name)
{
	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_attach_cpuidle(struct generic_pm_domain *genpd, int st)
{
	return -ENOSYS;
}
static inline int pm_genpd_name_attach_cpuidle(const char *name, int state)
{
	return -ENOSYS;
}
static inline int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
{
	return -ENOSYS;
}
static inline int pm_genpd_name_detach_cpuidle(const char *name)
{
	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_poweron(struct generic_pm_domain *genpd)
{
	return -ENOSYS;
}
static inline int pm_genpd_name_poweron(const char *domain_name)
{
	return -ENOSYS;
}
static inline void pm_genpd_poweroff_unused(void) {}
#endif

static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
				      struct device *dev)
{
	return __pm_genpd_add_device(genpd, dev, NULL);
}

static inline int pm_genpd_name_add_device(const char *domain_name,
					   struct device *dev)
{
	return __pm_genpd_name_add_device(domain_name, dev, NULL);
}

#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
extern void pm_genpd_syscore_poweroff(struct device *dev);
extern 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;

struct genpd_onecell_data {
	struct generic_pm_domain **domains;
	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);
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);

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)
{
	return 0;
}
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)
{
	return NULL;
}

#define __of_genpd_xlate_simple		NULL
#define __of_genpd_xlate_onecell	NULL

static inline int genpd_dev_pm_attach(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)
{
	return __of_genpd_add_provider(np, __of_genpd_xlate_simple, genpd);
}
static inline int of_genpd_add_provider_onecell(struct device_node *np,
					struct genpd_onecell_data *data)
{
	return __of_genpd_add_provider(np, __of_genpd_xlate_onecell, data);
}

#ifdef CONFIG_PM
extern int dev_pm_domain_attach(struct device *dev, bool power_on);
extern void dev_pm_domain_detach(struct device *dev, bool power_off);
#else
static inline int dev_pm_domain_attach(struct device *dev, bool power_on)
{
	return -ENODEV;
}
static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
#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>
cbc9ef02	18	#include <linux/cpuidle.h>
f721889f	19
c11f6f5b UH	20	/* Defines used for the flags field in the struct generic_pm_domain */
	21	#define GENPD_FLAG_PM_CLK (1U << 0) /* PM domain uses PM clk */
	22
17b75eca RW	23	enum gpd_status {
17b75eca RW	24	GPD_STATE_ACTIVE = 0, /* PM domain is active */
17b75eca RW	25	GPD_STATE_POWER_OFF, /* PM domain is off */
17b75eca RW	26	};
596ba34b	27
f721889f RW	28	struct dev_power_governor {
f721889f RW	29	bool (power_down_ok)(struct dev_pm_domain domain);
b02c999a	30	bool (stop_ok)(struct device dev);
f721889f RW	31	};
f721889f RW	32
d5e4cbfe RW	33	struct gpd_dev_ops {
	34	int (start)(struct device dev);
	35	int (stop)(struct device dev);
ecf00475 RW	36	int (save_state)(struct device dev);
ecf00475 RW	37	int (restore_state)(struct device dev);
d5e4cbfe RW	38	bool (active_wakeup)(struct device dev);
	39	};
	40
f39cb179	41	struct gpd_cpuidle_data {
cbc9ef02 RW	42	unsigned int saved_exit_latency;
	43	struct cpuidle_state *idle_state;
	44	};
	45
f721889f RW	46	struct generic_pm_domain {
f721889f RW	47	struct dev_pm_domain domain; /* PM domain operations */
5125bbf3	48	struct list_head gpd_list_node; /* Node in the global PM domains list */
5063ce15 RW	49	struct list_head master_links; /* Links with PM domain as a master */
5063ce15 RW	50	struct list_head slave_links; /* Links with PM domain as a slave */
f721889f RW	51	struct list_head dev_list; /* List of devices */
	52	struct mutex lock;
	53	struct dev_power_governor *gov;
	54	struct work_struct power_off_work;
d07e9c17	55	const char *name;
f721889f	56	unsigned int in_progress; /* Number of devices being suspended now */
c4bb3160	57	atomic_t sd_count; /* Number of subdomains with power "on" */
17b75eca	58	enum gpd_status status; /* Current state of the domain */
596ba34b RW	59	unsigned int device_count; /* Number of devices */
	60	unsigned int suspended_count; /* System suspend device counter */
	61	unsigned int prepared_count; /* Suspend counter of prepared devices */
	62	bool suspend_power_off; /* Power status before system suspend */
f721889f	63	int (power_off)(struct generic_pm_domain domain);
221e9b58	64	s64 power_off_latency_ns;
f721889f	65	int (power_on)(struct generic_pm_domain domain);
221e9b58	66	s64 power_on_latency_ns;
d5e4cbfe	67	struct gpd_dev_ops dev_ops;
221e9b58	68	s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
6ff7bb0d RW	69	bool max_off_time_changed;
6ff7bb0d RW	70	bool cached_power_down_ok;
f39cb179	71	struct gpd_cpuidle_data *cpuidle_data;
c16561e8 UH	72	int (attach_dev)(struct generic_pm_domain domain,
	73	struct device *dev);
	74	void (detach_dev)(struct generic_pm_domain domain,
	75	struct device *dev);
c11f6f5b	76	unsigned int flags; /* Bit field of configs for genpd */
f721889f RW	77	};
f721889f RW	78
596ba34b RW	79	static inline struct generic_pm_domain pd_to_genpd(struct dev_pm_domain pd)
	80	{
	81	return container_of(pd, struct generic_pm_domain, domain);
	82	}
	83
5063ce15 RW	84	struct gpd_link {
	85	struct generic_pm_domain *master;
	86	struct list_head master_node;
	87	struct generic_pm_domain *slave;
	88	struct list_head slave_node;
	89	};
	90
b02c999a RW	91	struct gpd_timing_data {
	92	s64 stop_latency_ns;
	93	s64 start_latency_ns;
221e9b58 RW	94	s64 save_state_latency_ns;
221e9b58 RW	95	s64 restore_state_latency_ns;
a5bef810	96	s64 effective_constraint_ns;
6ff7bb0d RW	97	bool constraint_changed;
6ff7bb0d RW	98	bool cached_stop_ok;
b02c999a RW	99	};
b02c999a RW	100
00e7c295 UH	101	struct pm_domain_data {
	102	struct list_head list_node;
	103	struct device *dev;
	104	};
	105
cd0ea672 RW	106	struct generic_pm_domain_data {
cd0ea672 RW	107	struct pm_domain_data base;
b02c999a	108	struct gpd_timing_data td;
6ff7bb0d	109	struct notifier_block nb;
cd0ea672 RW	110	};
cd0ea672 RW	111
9b4f617b	112	#ifdef CONFIG_PM_GENERIC_DOMAINS
cd0ea672 RW	113	static inline struct generic_pm_domain_data to_gpd_data(struct pm_domain_data pdd)
	114	{
	115	return container_of(pdd, struct generic_pm_domain_data, base);
	116	}
	117
d5e4cbfe RW	118	static inline struct generic_pm_domain_data dev_gpd_data(struct device dev)
	119	{
	120	return to_gpd_data(dev->power.subsys_data->domain_data);
	121	}
	122
446d999c	123	extern struct generic_pm_domain pm_genpd_lookup_dev(struct device dev);
b02c999a RW	124	extern int __pm_genpd_add_device(struct generic_pm_domain *genpd,
	125	struct device *dev,
	126	struct gpd_timing_data *td);
	127
b5abb085 RW	128	extern int __pm_genpd_name_add_device(const char *domain_name,
	129	struct device *dev,
	130	struct gpd_timing_data *td);
c8aa130b	131
f721889f RW	132	extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
	133	struct device *dev);
	134	extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
	135	struct generic_pm_domain *new_subdomain);
fb7268be RW	136	extern int pm_genpd_add_subdomain_names(const char *master_name,
fb7268be RW	137	const char *subdomain_name);
f721889f RW	138	extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
f721889f RW	139	struct generic_pm_domain *target);
40114447	140	extern int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state);
74a2799a	141	extern int pm_genpd_name_attach_cpuidle(const char *name, int state);
40114447	142	extern int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd);
74a2799a	143	extern int pm_genpd_name_detach_cpuidle(const char *name);
f721889f RW	144	extern void pm_genpd_init(struct generic_pm_domain *genpd,
f721889f RW	145	struct dev_power_governor *gov, bool is_off);
b02c999a	146
18b4f3f5	147	extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
8bc0251d	148	extern int pm_genpd_name_poweron(const char *domain_name);
d30d819d	149	extern void pm_genpd_poweroff_unused(void);
b02c999a	150
ae3c511c	151	extern struct dev_power_governor simple_qos_governor;
925b44a2	152	extern struct dev_power_governor pm_domain_always_on_gov;
f721889f	153	#else
b02c999a	154
b642631d MD	155	static inline struct generic_pm_domain_data dev_gpd_data(struct device dev)
	156	{
	157	return ERR_PTR(-ENOSYS);
	158	}
446d999c	159	static inline struct generic_pm_domain pm_genpd_lookup_dev(struct device dev)
b02c999a	160	{
446d999c	161	return NULL;
b02c999a RW	162	}
	163	static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
	164	struct device *dev,
	165	struct gpd_timing_data *td)
	166	{
	167	return -ENOSYS;
	168	}
b5abb085 RW	169	static inline int __pm_genpd_name_add_device(const char *domain_name,
	170	struct device *dev,
	171	struct gpd_timing_data *td)
f721889f RW	172	{
	173	return -ENOSYS;
	174	}
	175	static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd,
	176	struct device *dev)
	177	{
	178	return -ENOSYS;
	179	}
	180	static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
	181	struct generic_pm_domain *new_sd)
	182	{
	183	return -ENOSYS;
	184	}
fb7268be RW	185	static inline int pm_genpd_add_subdomain_names(const char *master_name,
	186	const char *subdomain_name)
	187	{
	188	return -ENOSYS;
	189	}
f721889f RW	190	static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
	191	struct generic_pm_domain *target)
	192	{
	193	return -ENOSYS;
	194	}
40114447	195	static inline int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int st)
cbc9ef02 RW	196	{
	197	return -ENOSYS;
	198	}
74a2799a RW	199	static inline int pm_genpd_name_attach_cpuidle(const char *name, int state)
	200	{
	201	return -ENOSYS;
	202	}
40114447	203	static inline int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
cbc9ef02 RW	204	{
	205	return -ENOSYS;
	206	}
74a2799a RW	207	static inline int pm_genpd_name_detach_cpuidle(const char *name)
	208	{
	209	return -ENOSYS;
	210	}
b642631d MD	211	static inline void pm_genpd_init(struct generic_pm_domain *genpd,
b642631d MD	212	struct dev_power_governor *gov, bool is_off)
b02c999a RW	213	{
b02c999a RW	214	}
18b4f3f5 MD	215	static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
	216	{
	217	return -ENOSYS;
	218	}
8bc0251d RW	219	static inline int pm_genpd_name_poweron(const char *domain_name)
	220	{
	221	return -ENOSYS;
	222	}
d30d819d	223	static inline void pm_genpd_poweroff_unused(void) {}
17f2ae7f RW	224	#endif
17f2ae7f RW	225
b5abb085 RW	226	static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
	227	struct device *dev)
	228	{
	229	return __pm_genpd_add_device(genpd, dev, NULL);
	230	}
	231
b5abb085 RW	232	static inline int pm_genpd_name_add_device(const char *domain_name,
	233	struct device *dev)
	234	{
	235	return __pm_genpd_name_add_device(domain_name, dev, NULL);
	236	}
	237
77f827de	238	#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
d47e6464 UH	239	extern void pm_genpd_syscore_poweroff(struct device *dev);
d47e6464 UH	240	extern void pm_genpd_syscore_poweron(struct device *dev);
77f827de	241	#else
d47e6464 UH	242	static inline void pm_genpd_syscore_poweroff(struct device *dev) {}
d47e6464 UH	243	static inline void pm_genpd_syscore_poweron(struct device *dev) {}
77f827de RW	244	#endif
77f827de RW	245
aa42240a TF	246	/* OF PM domain providers */
	247	struct of_device_id;
	248
	249	struct genpd_onecell_data {
	250	struct generic_pm_domain **domains;
	251	unsigned int num_domains;
	252	};
	253
	254	typedef struct generic_pm_domain (genpd_xlate_t)(struct of_phandle_args *args,
	255	void *data);
	256
	257	#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
	258	int __of_genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
	259	void *data);
	260	void of_genpd_del_provider(struct device_node *np);
7496fcbe ADK	261	struct generic_pm_domain *of_genpd_get_from_provider(
7496fcbe ADK	262	struct of_phandle_args *genpdspec);
aa42240a TF	263
	264	struct generic_pm_domain *__of_genpd_xlate_simple(
	265	struct of_phandle_args *genpdspec,
	266	void *data);
	267	struct generic_pm_domain *__of_genpd_xlate_onecell(
	268	struct of_phandle_args *genpdspec,
	269	void *data);
	270
	271	int genpd_dev_pm_attach(struct device *dev);
	272	#else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
	273	static inline int __of_genpd_add_provider(struct device_node *np,
	274	genpd_xlate_t xlate, void *data)
	275	{
	276	return 0;
	277	}
	278	static inline void of_genpd_del_provider(struct device_node *np) {}
	279
7496fcbe ADK	280	static inline struct generic_pm_domain *of_genpd_get_from_provider(
	281	struct of_phandle_args *genpdspec)
	282	{
	283	return NULL;
	284	}
	285
aa42240a TF	286	#define __of_genpd_xlate_simple NULL
	287	#define __of_genpd_xlate_onecell NULL
	288
	289	static inline int genpd_dev_pm_attach(struct device *dev)
	290	{
	291	return -ENODEV;
	292	}
	293	#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
	294
	295	static inline int of_genpd_add_provider_simple(struct device_node *np,
	296	struct generic_pm_domain *genpd)
	297	{
	298	return __of_genpd_add_provider(np, __of_genpd_xlate_simple, genpd);
	299	}
	300	static inline int of_genpd_add_provider_onecell(struct device_node *np,
	301	struct genpd_onecell_data *data)
	302	{
	303	return __of_genpd_add_provider(np, __of_genpd_xlate_onecell, data);
	304	}
	305
f48c767c UH	306	#ifdef CONFIG_PM
	307	extern int dev_pm_domain_attach(struct device *dev, bool power_on);
	308	extern void dev_pm_domain_detach(struct device *dev, bool power_off);
	309	#else
	310	static inline int dev_pm_domain_attach(struct device *dev, bool power_on)
	311	{
	312	return -ENODEV;
	313	}
	314	static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
	315	#endif
	316
f721889f	317	#endif /* _LINUX_PM_DOMAIN_H */