[linux-2.6-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/cpuidle.h>

enum gpd_status {
	GPD_STATE_ACTIVE = 0,	/* PM domain is active */
	GPD_STATE_WAIT_MASTER,	/* PM domain's master is being waited for */
	GPD_STATE_BUSY,		/* Something is happening to the PM domain */
	GPD_STATE_REPEAT,	/* Power off in progress, to be repeated */
	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 */
	wait_queue_head_t status_wait_queue;
	struct task_struct *poweroff_task;	/* Powering off task */
	unsigned int resume_count;	/* Number of devices being resumed */
	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);
};

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 generic_pm_domain_data {
	struct pm_domain_data base;
	struct gpd_timing_data td;
	struct notifier_block nb;
	struct mutex lock;
	unsigned int refcount;
	int need_restore;
};

#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 *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);

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 void pm_genpd_dev_need_restore(struct device *dev, bool val);
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 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 *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_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 void pm_genpd_dev_need_restore(struct device *dev, bool val) {}
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;
}
#define simple_qos_governor NULL
#define pm_domain_always_on_gov NULL
#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_RUNTIME
extern void pm_genpd_poweroff_unused(void);
#else
static inline void pm_genpd_poweroff_unused(void) {}
#endif

#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_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) {}

#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
17b75eca RW	20	enum gpd_status {
17b75eca RW	21	GPD_STATE_ACTIVE = 0, /* PM domain is active */
17877eb5	22	GPD_STATE_WAIT_MASTER, /* PM domain's master is being waited for */
17b75eca	23	GPD_STATE_BUSY, /* Something is happening to the PM domain */
c6d22b37	24	GPD_STATE_REPEAT, /* Power off in progress, to be repeated */
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 RW	58	enum gpd_status status; /* Current state of the domain */
17b75eca RW	59	wait_queue_head_t status_wait_queue;
c6d22b37 RW	60	struct task_struct poweroff_task; / Powering off task */
c6d22b37 RW	61	unsigned int resume_count; /* Number of devices being resumed */
596ba34b RW	62	unsigned int device_count; /* Number of devices */
	63	unsigned int suspended_count; /* System suspend device counter */
	64	unsigned int prepared_count; /* Suspend counter of prepared devices */
	65	bool suspend_power_off; /* Power status before system suspend */
f721889f	66	int (power_off)(struct generic_pm_domain domain);
221e9b58	67	s64 power_off_latency_ns;
f721889f	68	int (power_on)(struct generic_pm_domain domain);
221e9b58	69	s64 power_on_latency_ns;
d5e4cbfe	70	struct gpd_dev_ops dev_ops;
221e9b58	71	s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
6ff7bb0d RW	72	bool max_off_time_changed;
6ff7bb0d RW	73	bool cached_power_down_ok;
f39cb179	74	struct gpd_cpuidle_data *cpuidle_data;
c16561e8 UH	75	int (attach_dev)(struct generic_pm_domain domain,
	76	struct device *dev);
	77	void (detach_dev)(struct generic_pm_domain domain,
	78	struct device *dev);
f721889f RW	79	};
f721889f RW	80
596ba34b RW	81	static inline struct generic_pm_domain pd_to_genpd(struct dev_pm_domain pd)
	82	{
	83	return container_of(pd, struct generic_pm_domain, domain);
	84	}
	85
5063ce15 RW	86	struct gpd_link {
	87	struct generic_pm_domain *master;
	88	struct list_head master_node;
	89	struct generic_pm_domain *slave;
	90	struct list_head slave_node;
	91	};
	92
b02c999a RW	93	struct gpd_timing_data {
	94	s64 stop_latency_ns;
	95	s64 start_latency_ns;
221e9b58 RW	96	s64 save_state_latency_ns;
221e9b58 RW	97	s64 restore_state_latency_ns;
a5bef810	98	s64 effective_constraint_ns;
6ff7bb0d RW	99	bool constraint_changed;
6ff7bb0d RW	100	bool cached_stop_ok;
b02c999a RW	101	};
b02c999a RW	102
cd0ea672 RW	103	struct generic_pm_domain_data {
cd0ea672 RW	104	struct pm_domain_data base;
b02c999a	105	struct gpd_timing_data td;
6ff7bb0d RW	106	struct notifier_block nb;
6ff7bb0d RW	107	struct mutex lock;
1d5fcfec	108	unsigned int refcount;
67732cd3	109	int need_restore;
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
b02c999a RW	123	extern struct generic_pm_domain dev_to_genpd(struct device dev);
	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,
f721889f RW	133	struct device *dev);
ca1d72f0	134	extern void pm_genpd_dev_need_restore(struct device *dev, bool val);
f721889f RW	135	extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
f721889f RW	136	struct generic_pm_domain *new_subdomain);
fb7268be RW	137	extern int pm_genpd_add_subdomain_names(const char *master_name,
fb7268be RW	138	const char *subdomain_name);
f721889f RW	139	extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
f721889f RW	140	struct generic_pm_domain *target);
40114447	141	extern int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state);
74a2799a	142	extern int pm_genpd_name_attach_cpuidle(const char *name, int state);
40114447	143	extern int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd);
74a2799a	144	extern int pm_genpd_name_detach_cpuidle(const char *name);
f721889f RW	145	extern void pm_genpd_init(struct generic_pm_domain *genpd,
f721889f RW	146	struct dev_power_governor *gov, bool is_off);
b02c999a	147
18b4f3f5	148	extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
8bc0251d	149	extern int pm_genpd_name_poweron(const char *domain_name);
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	}
b02c999a RW	159	static inline struct generic_pm_domain dev_to_genpd(struct device dev)
	160	{
	161	return ERR_PTR(-ENOSYS);
	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	}
ca1d72f0	180	static inline void pm_genpd_dev_need_restore(struct device *dev, bool val) {}
f721889f RW	181	static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
	182	struct generic_pm_domain *new_sd)
	183	{
	184	return -ENOSYS;
	185	}
fb7268be RW	186	static inline int pm_genpd_add_subdomain_names(const char *master_name,
	187	const char *subdomain_name)
	188	{
	189	return -ENOSYS;
	190	}
f721889f RW	191	static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
	192	struct generic_pm_domain *target)
	193	{
	194	return -ENOSYS;
	195	}
40114447	196	static inline int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int st)
cbc9ef02 RW	197	{
	198	return -ENOSYS;
	199	}
74a2799a RW	200	static inline int pm_genpd_name_attach_cpuidle(const char *name, int state)
	201	{
	202	return -ENOSYS;
	203	}
40114447	204	static inline int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
cbc9ef02 RW	205	{
	206	return -ENOSYS;
	207	}
74a2799a RW	208	static inline int pm_genpd_name_detach_cpuidle(const char *name)
	209	{
	210	return -ENOSYS;
	211	}
b642631d MD	212	static inline void pm_genpd_init(struct generic_pm_domain *genpd,
b642631d MD	213	struct dev_power_governor *gov, bool is_off)
b02c999a RW	214	{
b02c999a RW	215	}
18b4f3f5 MD	216	static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
	217	{
	218	return -ENOSYS;
	219	}
8bc0251d RW	220	static inline int pm_genpd_name_poweron(const char *domain_name)
	221	{
	222	return -ENOSYS;
	223	}
b642631d	224	#define simple_qos_governor NULL
925b44a2	225	#define pm_domain_always_on_gov NULL
17f2ae7f RW	226	#endif
17f2ae7f RW	227
b5abb085 RW	228	static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
	229	struct device *dev)
	230	{
	231	return __pm_genpd_add_device(genpd, dev, NULL);
	232	}
	233
b5abb085 RW	234	static inline int pm_genpd_name_add_device(const char *domain_name,
	235	struct device *dev)
	236	{
	237	return __pm_genpd_name_add_device(domain_name, dev, NULL);
	238	}
	239
17f2ae7f	240	#ifdef CONFIG_PM_GENERIC_DOMAINS_RUNTIME
17f2ae7f RW	241	extern void pm_genpd_poweroff_unused(void);
17f2ae7f RW	242	#else
17f2ae7f	243	static inline void pm_genpd_poweroff_unused(void) {}
f721889f RW	244	#endif
f721889f RW	245
77f827de	246	#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
d47e6464 UH	247	extern void pm_genpd_syscore_poweroff(struct device *dev);
d47e6464 UH	248	extern void pm_genpd_syscore_poweron(struct device *dev);
77f827de	249	#else
d47e6464 UH	250	static inline void pm_genpd_syscore_poweroff(struct device *dev) {}
d47e6464 UH	251	static inline void pm_genpd_syscore_poweron(struct device *dev) {}
77f827de RW	252	#endif
77f827de RW	253
aa42240a TF	254	/* OF PM domain providers */
	255	struct of_device_id;
	256
	257	struct genpd_onecell_data {
	258	struct generic_pm_domain **domains;
	259	unsigned int num_domains;
	260	};
	261
	262	typedef struct generic_pm_domain (genpd_xlate_t)(struct of_phandle_args *args,
	263	void *data);
	264
	265	#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
	266	int __of_genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
	267	void *data);
	268	void of_genpd_del_provider(struct device_node *np);
	269
	270	struct generic_pm_domain *__of_genpd_xlate_simple(
	271	struct of_phandle_args *genpdspec,
	272	void *data);
	273	struct generic_pm_domain *__of_genpd_xlate_onecell(
	274	struct of_phandle_args *genpdspec,
	275	void *data);
	276
	277	int genpd_dev_pm_attach(struct device *dev);
	278	#else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
	279	static inline int __of_genpd_add_provider(struct device_node *np,
	280	genpd_xlate_t xlate, void *data)
	281	{
	282	return 0;
	283	}
	284	static inline void of_genpd_del_provider(struct device_node *np) {}
	285
	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 */