xref: /linux/include/linux/pm_domain.h (revision 418da6ee1ea62090f6b66d95b8fcf7db2f42c00f)
1 /* SPDX-License-Identifier: GPL-2.0-only */
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.
6  */
7 
8 #ifndef _LINUX_PM_DOMAIN_H
9 #define _LINUX_PM_DOMAIN_H
10 
11 #include <linux/device.h>
12 #include <linux/ktime.h>
13 #include <linux/mutex.h>
14 #include <linux/pm.h>
15 #include <linux/err.h>
16 #include <linux/of.h>
17 #include <linux/notifier.h>
18 #include <linux/spinlock.h>
19 #include <linux/cpumask_types.h>
20 #include <linux/time64.h>
21 
22 /*
23  * Flags to control the behaviour when attaching a device to its PM domains.
24  *
25  * PD_FLAG_NO_DEV_LINK:		As the default behaviour creates a device-link
26  *				for every PM domain that gets attached, this
27  *				flag can be used to skip that.
28  *
29  * PD_FLAG_DEV_LINK_ON:		Add the DL_FLAG_RPM_ACTIVE to power-on the
30  *				supplier and its PM domain when creating the
31  *				device-links.
32  *
33  * PD_FLAG_REQUIRED_OPP:	Assign required_devs for the required OPPs. The
34  *				index of the required OPP must correspond to the
35  *				index in the array of the pd_names. If pd_names
36  *				isn't specified, the index just follows the
37  *				index for the attached PM domain.
38  *
39  */
40 #define PD_FLAG_NO_DEV_LINK		BIT(0)
41 #define PD_FLAG_DEV_LINK_ON		BIT(1)
42 #define PD_FLAG_REQUIRED_OPP		BIT(2)
43 
44 struct dev_pm_domain_attach_data {
45 	const char * const *pd_names;
46 	const u32 num_pd_names;
47 	const u32 pd_flags;
48 };
49 
50 struct dev_pm_domain_list {
51 	struct device **pd_devs;
52 	struct device_link **pd_links;
53 	u32 *opp_tokens;
54 	u32 num_pds;
55 };
56 
57 /*
58  * Flags to control the behaviour of a genpd.
59  *
60  * These flags may be set in the struct generic_pm_domain's flags field by a
61  * genpd backend driver. The flags must be set before it calls pm_genpd_init(),
62  * which initializes a genpd.
63  *
64  * GENPD_FLAG_PM_CLK:		Instructs genpd to use the PM clk framework,
65  *				while powering on/off attached devices.
66  *
67  * GENPD_FLAG_IRQ_SAFE:		This informs genpd that its backend callbacks,
68  *				->power_on|off(), doesn't sleep. Hence, these
69  *				can be invoked from within atomic context, which
70  *				enables genpd to power on/off the PM domain,
71  *				even when pm_runtime_is_irq_safe() returns true,
72  *				for any of its attached devices. Note that, a
73  *				genpd having this flag set, requires its
74  *				masterdomains to also have it set.
75  *
76  * GENPD_FLAG_ALWAYS_ON:	Instructs genpd to always keep the PM domain
77  *				powered on.
78  *
79  * GENPD_FLAG_ACTIVE_WAKEUP:	Instructs genpd to keep the PM domain powered
80  *				on, in case any of its attached devices is used
81  *				in the wakeup path to serve system wakeups.
82  *
83  * GENPD_FLAG_CPU_DOMAIN:	Instructs genpd that it should expect to get
84  *				devices attached, which may belong to CPUs or
85  *				possibly have subdomains with CPUs attached.
86  *				This flag enables the genpd backend driver to
87  *				deploy idle power management support for CPUs
88  *				and groups of CPUs. Note that, the backend
89  *				driver must then comply with the so called,
90  *				last-man-standing algorithm, for the CPUs in the
91  *				PM domain.
92  *
93  * GENPD_FLAG_RPM_ALWAYS_ON:	Instructs genpd to always keep the PM domain
94  *				powered on except for system suspend.
95  *
96  * GENPD_FLAG_MIN_RESIDENCY:	Enable the genpd governor to consider its
97  *				components' next wakeup when determining the
98  *				optimal idle state.
99  *
100  * GENPD_FLAG_OPP_TABLE_FW:	The genpd provider supports performance states,
101  *				but its corresponding OPP tables are not
102  *				described in DT, but are given directly by FW.
103  *
104  * GENPD_FLAG_DEV_NAME_FW:	Instructs genpd to generate an unique device name
105  *				using ida. It is used by genpd providers which
106  *				get their genpd-names directly from FW.
107  */
108 #define GENPD_FLAG_PM_CLK	 (1U << 0)
109 #define GENPD_FLAG_IRQ_SAFE	 (1U << 1)
110 #define GENPD_FLAG_ALWAYS_ON	 (1U << 2)
111 #define GENPD_FLAG_ACTIVE_WAKEUP (1U << 3)
112 #define GENPD_FLAG_CPU_DOMAIN	 (1U << 4)
113 #define GENPD_FLAG_RPM_ALWAYS_ON (1U << 5)
114 #define GENPD_FLAG_MIN_RESIDENCY (1U << 6)
115 #define GENPD_FLAG_OPP_TABLE_FW	 (1U << 7)
116 #define GENPD_FLAG_DEV_NAME_FW	 (1U << 8)
117 
118 enum gpd_status {
119 	GENPD_STATE_ON = 0,	/* PM domain is on */
120 	GENPD_STATE_OFF,	/* PM domain is off */
121 };
122 
123 enum genpd_notication {
124 	GENPD_NOTIFY_PRE_OFF = 0,
125 	GENPD_NOTIFY_OFF,
126 	GENPD_NOTIFY_PRE_ON,
127 	GENPD_NOTIFY_ON,
128 };
129 
130 struct dev_power_governor {
131 	bool (*power_down_ok)(struct dev_pm_domain *domain);
132 	bool (*suspend_ok)(struct device *dev);
133 };
134 
135 struct gpd_dev_ops {
136 	int (*start)(struct device *dev);
137 	int (*stop)(struct device *dev);
138 };
139 
140 struct genpd_governor_data {
141 	s64 max_off_time_ns;
142 	bool max_off_time_changed;
143 	ktime_t next_wakeup;
144 	ktime_t next_hrtimer;
145 	ktime_t last_enter;
146 	bool reflect_residency;
147 	bool cached_power_down_ok;
148 	bool cached_power_down_state_idx;
149 };
150 
151 struct genpd_power_state {
152 	const char *name;
153 	s64 power_off_latency_ns;
154 	s64 power_on_latency_ns;
155 	s64 residency_ns;
156 	u64 usage;
157 	u64 rejected;
158 	u64 above;
159 	u64 below;
160 	struct fwnode_handle *fwnode;
161 	u64 idle_time;
162 	void *data;
163 };
164 
165 struct genpd_lock_ops;
166 struct opp_table;
167 
168 struct generic_pm_domain {
169 	struct device dev;
170 	struct dev_pm_domain domain;	/* PM domain operations */
171 	struct list_head gpd_list_node;	/* Node in the global PM domains list */
172 	struct list_head parent_links;	/* Links with PM domain as a parent */
173 	struct list_head child_links;	/* Links with PM domain as a child */
174 	struct list_head dev_list;	/* List of devices */
175 	struct dev_power_governor *gov;
176 	struct genpd_governor_data *gd;	/* Data used by a genpd governor. */
177 	struct work_struct power_off_work;
178 	struct fwnode_handle *provider;	/* Identity of the domain provider */
179 	bool has_provider;
180 	const char *name;
181 	atomic_t sd_count;	/* Number of subdomains with power "on" */
182 	enum gpd_status status;	/* Current state of the domain */
183 	unsigned int device_count;	/* Number of devices */
184 	unsigned int device_id;		/* unique device id */
185 	unsigned int suspended_count;	/* System suspend device counter */
186 	unsigned int prepared_count;	/* Suspend counter of prepared devices */
187 	unsigned int performance_state;	/* Aggregated max performance state */
188 	cpumask_var_t cpus;		/* A cpumask of the attached CPUs */
189 	bool synced_poweroff;		/* A consumer needs a synced poweroff */
190 	int (*power_off)(struct generic_pm_domain *domain);
191 	int (*power_on)(struct generic_pm_domain *domain);
192 	struct raw_notifier_head power_notifiers; /* Power on/off notifiers */
193 	struct opp_table *opp_table;	/* OPP table of the genpd */
194 	int (*set_performance_state)(struct generic_pm_domain *genpd,
195 				     unsigned int state);
196 	struct gpd_dev_ops dev_ops;
197 	int (*set_hwmode_dev)(struct generic_pm_domain *domain,
198 			      struct device *dev, bool enable);
199 	bool (*get_hwmode_dev)(struct generic_pm_domain *domain,
200 			      struct device *dev);
201 	int (*attach_dev)(struct generic_pm_domain *domain,
202 			  struct device *dev);
203 	void (*detach_dev)(struct generic_pm_domain *domain,
204 			   struct device *dev);
205 	unsigned int flags;		/* Bit field of configs for genpd */
206 	struct genpd_power_state *states;
207 	void (*free_states)(struct genpd_power_state *states,
208 			    unsigned int state_count);
209 	unsigned int state_count; /* number of states */
210 	unsigned int state_idx; /* state that genpd will go to when off */
211 	u64 on_time;
212 	u64 accounting_time;
213 	const struct genpd_lock_ops *lock_ops;
214 	union {
215 		struct mutex mlock;
216 		struct {
217 			spinlock_t slock;
218 			unsigned long lock_flags;
219 		};
220 		struct {
221 			raw_spinlock_t raw_slock;
222 			unsigned long raw_lock_flags;
223 		};
224 	};
225 };
226 
pd_to_genpd(struct dev_pm_domain * pd)227 static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
228 {
229 	return container_of(pd, struct generic_pm_domain, domain);
230 }
231 
232 struct gpd_link {
233 	struct generic_pm_domain *parent;
234 	struct list_head parent_node;
235 	struct generic_pm_domain *child;
236 	struct list_head child_node;
237 
238 	/* Sub-domain's per-master domain performance state */
239 	unsigned int performance_state;
240 	unsigned int prev_performance_state;
241 };
242 
243 struct gpd_timing_data {
244 	s64 suspend_latency_ns;
245 	s64 resume_latency_ns;
246 	s64 effective_constraint_ns;
247 	ktime_t	next_wakeup;
248 	bool constraint_changed;
249 	bool cached_suspend_ok;
250 };
251 
252 struct pm_domain_data {
253 	struct list_head list_node;
254 	struct device *dev;
255 };
256 
257 struct generic_pm_domain_data {
258 	struct pm_domain_data base;
259 	struct gpd_timing_data *td;
260 	struct notifier_block nb;
261 	struct notifier_block *power_nb;
262 	int cpu;
263 	unsigned int performance_state;
264 	unsigned int default_pstate;
265 	unsigned int rpm_pstate;
266 	unsigned int opp_token;
267 	bool hw_mode;
268 	bool rpm_always_on;
269 	void *data;
270 };
271 
272 #ifdef CONFIG_PM_GENERIC_DOMAINS
to_gpd_data(struct pm_domain_data * pdd)273 static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *pdd)
274 {
275 	return container_of(pdd, struct generic_pm_domain_data, base);
276 }
277 
dev_gpd_data(struct device * dev)278 static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
279 {
280 	return to_gpd_data(dev->power.subsys_data->domain_data);
281 }
282 
283 int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev);
284 int pm_genpd_remove_device(struct device *dev);
285 int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
286 			   struct generic_pm_domain *subdomain);
287 int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
288 			      struct generic_pm_domain *subdomain);
289 int pm_genpd_init(struct generic_pm_domain *genpd,
290 		  struct dev_power_governor *gov, bool is_off);
291 int pm_genpd_remove(struct generic_pm_domain *genpd);
292 void pm_genpd_inc_rejected(struct generic_pm_domain *genpd,
293 			   unsigned int state_idx);
294 struct device *dev_to_genpd_dev(struct device *dev);
295 int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state);
296 int dev_pm_genpd_add_notifier(struct device *dev, struct notifier_block *nb);
297 int dev_pm_genpd_remove_notifier(struct device *dev);
298 void dev_pm_genpd_set_next_wakeup(struct device *dev, ktime_t next);
299 ktime_t dev_pm_genpd_get_next_hrtimer(struct device *dev);
300 void dev_pm_genpd_synced_poweroff(struct device *dev);
301 int dev_pm_genpd_set_hwmode(struct device *dev, bool enable);
302 bool dev_pm_genpd_get_hwmode(struct device *dev);
303 int dev_pm_genpd_rpm_always_on(struct device *dev, bool on);
304 
305 extern struct dev_power_governor simple_qos_governor;
306 extern struct dev_power_governor pm_domain_always_on_gov;
307 #ifdef CONFIG_CPU_IDLE
308 extern struct dev_power_governor pm_domain_cpu_gov;
309 #endif
310 #else
311 
dev_gpd_data(struct device * dev)312 static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
313 {
314 	return ERR_PTR(-ENOSYS);
315 }
pm_genpd_add_device(struct generic_pm_domain * genpd,struct device * dev)316 static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
317 				      struct device *dev)
318 {
319 	return -ENOSYS;
320 }
pm_genpd_remove_device(struct device * dev)321 static inline int pm_genpd_remove_device(struct device *dev)
322 {
323 	return -ENOSYS;
324 }
pm_genpd_add_subdomain(struct generic_pm_domain * genpd,struct generic_pm_domain * subdomain)325 static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
326 					 struct generic_pm_domain *subdomain)
327 {
328 	return -ENOSYS;
329 }
pm_genpd_remove_subdomain(struct generic_pm_domain * genpd,struct generic_pm_domain * subdomain)330 static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
331 					    struct generic_pm_domain *subdomain)
332 {
333 	return -ENOSYS;
334 }
pm_genpd_init(struct generic_pm_domain * genpd,struct dev_power_governor * gov,bool is_off)335 static inline int pm_genpd_init(struct generic_pm_domain *genpd,
336 				struct dev_power_governor *gov, bool is_off)
337 {
338 	return -ENOSYS;
339 }
pm_genpd_remove(struct generic_pm_domain * genpd)340 static inline int pm_genpd_remove(struct generic_pm_domain *genpd)
341 {
342 	return -EOPNOTSUPP;
343 }
344 
pm_genpd_inc_rejected(struct generic_pm_domain * genpd,unsigned int state_idx)345 static inline void pm_genpd_inc_rejected(struct generic_pm_domain *genpd,
346 					 unsigned int state_idx)
347 { }
348 
dev_to_genpd_dev(struct device * dev)349 static inline struct device *dev_to_genpd_dev(struct device *dev)
350 {
351 	return ERR_PTR(-EOPNOTSUPP);
352 }
353 
dev_pm_genpd_set_performance_state(struct device * dev,unsigned int state)354 static inline int dev_pm_genpd_set_performance_state(struct device *dev,
355 						     unsigned int state)
356 {
357 	return -EOPNOTSUPP;
358 }
359 
dev_pm_genpd_add_notifier(struct device * dev,struct notifier_block * nb)360 static inline int dev_pm_genpd_add_notifier(struct device *dev,
361 					    struct notifier_block *nb)
362 {
363 	return -EOPNOTSUPP;
364 }
365 
dev_pm_genpd_remove_notifier(struct device * dev)366 static inline int dev_pm_genpd_remove_notifier(struct device *dev)
367 {
368 	return -EOPNOTSUPP;
369 }
370 
dev_pm_genpd_set_next_wakeup(struct device * dev,ktime_t next)371 static inline void dev_pm_genpd_set_next_wakeup(struct device *dev, ktime_t next)
372 { }
373 
dev_pm_genpd_get_next_hrtimer(struct device * dev)374 static inline ktime_t dev_pm_genpd_get_next_hrtimer(struct device *dev)
375 {
376 	return KTIME_MAX;
377 }
dev_pm_genpd_synced_poweroff(struct device * dev)378 static inline void dev_pm_genpd_synced_poweroff(struct device *dev)
379 { }
380 
dev_pm_genpd_set_hwmode(struct device * dev,bool enable)381 static inline int dev_pm_genpd_set_hwmode(struct device *dev, bool enable)
382 {
383 	return -EOPNOTSUPP;
384 }
385 
dev_pm_genpd_get_hwmode(struct device * dev)386 static inline bool dev_pm_genpd_get_hwmode(struct device *dev)
387 {
388 	return false;
389 }
390 
dev_pm_genpd_rpm_always_on(struct device * dev,bool on)391 static inline int dev_pm_genpd_rpm_always_on(struct device *dev, bool on)
392 {
393 	return -EOPNOTSUPP;
394 }
395 
396 #define simple_qos_governor		(*(struct dev_power_governor *)(NULL))
397 #define pm_domain_always_on_gov		(*(struct dev_power_governor *)(NULL))
398 #endif
399 
400 #ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
401 void dev_pm_genpd_suspend(struct device *dev);
402 void dev_pm_genpd_resume(struct device *dev);
403 #else
dev_pm_genpd_suspend(struct device * dev)404 static inline void dev_pm_genpd_suspend(struct device *dev) {}
dev_pm_genpd_resume(struct device * dev)405 static inline void dev_pm_genpd_resume(struct device *dev) {}
406 #endif
407 
408 /* OF PM domain providers */
409 struct of_device_id;
410 
411 typedef struct generic_pm_domain *(*genpd_xlate_t)(const struct of_phandle_args *args,
412 						   void *data);
413 
414 struct genpd_onecell_data {
415 	struct generic_pm_domain **domains;
416 	unsigned int num_domains;
417 	genpd_xlate_t xlate;
418 };
419 
420 #ifdef CONFIG_PM_GENERIC_DOMAINS_OF
421 int of_genpd_add_provider_simple(struct device_node *np,
422 				 struct generic_pm_domain *genpd);
423 int of_genpd_add_provider_onecell(struct device_node *np,
424 				  struct genpd_onecell_data *data);
425 void of_genpd_del_provider(struct device_node *np);
426 int of_genpd_add_device(const struct of_phandle_args *args, struct device *dev);
427 int of_genpd_add_subdomain(const struct of_phandle_args *parent_spec,
428 			   const struct of_phandle_args *subdomain_spec);
429 int of_genpd_remove_subdomain(const struct of_phandle_args *parent_spec,
430 			      const struct of_phandle_args *subdomain_spec);
431 struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
432 int of_genpd_parse_idle_states(struct device_node *dn,
433 			       struct genpd_power_state **states, int *n);
434 
435 int genpd_dev_pm_attach(struct device *dev);
436 struct device *genpd_dev_pm_attach_by_id(struct device *dev,
437 					 unsigned int index);
438 struct device *genpd_dev_pm_attach_by_name(struct device *dev,
439 					   const char *name);
440 #else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
of_genpd_add_provider_simple(struct device_node * np,struct generic_pm_domain * genpd)441 static inline int of_genpd_add_provider_simple(struct device_node *np,
442 					struct generic_pm_domain *genpd)
443 {
444 	return -EOPNOTSUPP;
445 }
446 
of_genpd_add_provider_onecell(struct device_node * np,struct genpd_onecell_data * data)447 static inline int of_genpd_add_provider_onecell(struct device_node *np,
448 					struct genpd_onecell_data *data)
449 {
450 	return -EOPNOTSUPP;
451 }
452 
of_genpd_del_provider(struct device_node * np)453 static inline void of_genpd_del_provider(struct device_node *np) {}
454 
of_genpd_add_device(const struct of_phandle_args * args,struct device * dev)455 static inline int of_genpd_add_device(const struct of_phandle_args *args,
456 				      struct device *dev)
457 {
458 	return -ENODEV;
459 }
460 
of_genpd_add_subdomain(const struct of_phandle_args * parent_spec,const struct of_phandle_args * subdomain_spec)461 static inline int of_genpd_add_subdomain(const struct of_phandle_args *parent_spec,
462 					 const struct of_phandle_args *subdomain_spec)
463 {
464 	return -ENODEV;
465 }
466 
of_genpd_remove_subdomain(const struct of_phandle_args * parent_spec,const struct of_phandle_args * subdomain_spec)467 static inline int of_genpd_remove_subdomain(const struct of_phandle_args *parent_spec,
468 					    const struct of_phandle_args *subdomain_spec)
469 {
470 	return -ENODEV;
471 }
472 
of_genpd_parse_idle_states(struct device_node * dn,struct genpd_power_state ** states,int * n)473 static inline int of_genpd_parse_idle_states(struct device_node *dn,
474 			struct genpd_power_state **states, int *n)
475 {
476 	return -ENODEV;
477 }
478 
genpd_dev_pm_attach(struct device * dev)479 static inline int genpd_dev_pm_attach(struct device *dev)
480 {
481 	return 0;
482 }
483 
genpd_dev_pm_attach_by_id(struct device * dev,unsigned int index)484 static inline struct device *genpd_dev_pm_attach_by_id(struct device *dev,
485 						       unsigned int index)
486 {
487 	return NULL;
488 }
489 
genpd_dev_pm_attach_by_name(struct device * dev,const char * name)490 static inline struct device *genpd_dev_pm_attach_by_name(struct device *dev,
491 							 const char *name)
492 {
493 	return NULL;
494 }
495 
496 static inline
of_genpd_remove_last(struct device_node * np)497 struct generic_pm_domain *of_genpd_remove_last(struct device_node *np)
498 {
499 	return ERR_PTR(-EOPNOTSUPP);
500 }
501 #endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
502 
503 #ifdef CONFIG_PM
504 int dev_pm_domain_attach(struct device *dev, bool power_on);
505 struct device *dev_pm_domain_attach_by_id(struct device *dev,
506 					  unsigned int index);
507 struct device *dev_pm_domain_attach_by_name(struct device *dev,
508 					    const char *name);
509 int dev_pm_domain_attach_list(struct device *dev,
510 			      const struct dev_pm_domain_attach_data *data,
511 			      struct dev_pm_domain_list **list);
512 int devm_pm_domain_attach_list(struct device *dev,
513 			       const struct dev_pm_domain_attach_data *data,
514 			       struct dev_pm_domain_list **list);
515 void dev_pm_domain_detach(struct device *dev, bool power_off);
516 void dev_pm_domain_detach_list(struct dev_pm_domain_list *list);
517 int dev_pm_domain_start(struct device *dev);
518 void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd);
519 int dev_pm_domain_set_performance_state(struct device *dev, unsigned int state);
520 #else
dev_pm_domain_attach(struct device * dev,bool power_on)521 static inline int dev_pm_domain_attach(struct device *dev, bool power_on)
522 {
523 	return 0;
524 }
dev_pm_domain_attach_by_id(struct device * dev,unsigned int index)525 static inline struct device *dev_pm_domain_attach_by_id(struct device *dev,
526 							unsigned int index)
527 {
528 	return NULL;
529 }
dev_pm_domain_attach_by_name(struct device * dev,const char * name)530 static inline struct device *dev_pm_domain_attach_by_name(struct device *dev,
531 							  const char *name)
532 {
533 	return NULL;
534 }
dev_pm_domain_attach_list(struct device * dev,const struct dev_pm_domain_attach_data * data,struct dev_pm_domain_list ** list)535 static inline int dev_pm_domain_attach_list(struct device *dev,
536 				const struct dev_pm_domain_attach_data *data,
537 				struct dev_pm_domain_list **list)
538 {
539 	return 0;
540 }
541 
devm_pm_domain_attach_list(struct device * dev,const struct dev_pm_domain_attach_data * data,struct dev_pm_domain_list ** list)542 static inline int devm_pm_domain_attach_list(struct device *dev,
543 					     const struct dev_pm_domain_attach_data *data,
544 					     struct dev_pm_domain_list **list)
545 {
546 	return 0;
547 }
548 
dev_pm_domain_detach(struct device * dev,bool power_off)549 static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
dev_pm_domain_detach_list(struct dev_pm_domain_list * list)550 static inline void dev_pm_domain_detach_list(struct dev_pm_domain_list *list) {}
dev_pm_domain_start(struct device * dev)551 static inline int dev_pm_domain_start(struct device *dev)
552 {
553 	return 0;
554 }
dev_pm_domain_set(struct device * dev,struct dev_pm_domain * pd)555 static inline void dev_pm_domain_set(struct device *dev,
556 				     struct dev_pm_domain *pd) {}
dev_pm_domain_set_performance_state(struct device * dev,unsigned int state)557 static inline int dev_pm_domain_set_performance_state(struct device *dev,
558 						      unsigned int state)
559 {
560 	return 0;
561 }
562 #endif
563 
564 #endif /* _LINUX_PM_DOMAIN_H */
565