aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/device.h4
-rw-r--r--include/linux/pm.h10
-rw-r--r--include/linux/pm_domain.h108
-rw-r--r--include/linux/pm_runtime.h32
4 files changed, 134 insertions, 20 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index e4f62d8896b7..160d4ddb2499 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -516,7 +516,7 @@ struct device_dma_parameters {
516 * minimizes board-specific #ifdefs in drivers. 516 * minimizes board-specific #ifdefs in drivers.
517 * @power: For device power management. 517 * @power: For device power management.
518 * See Documentation/power/devices.txt for details. 518 * See Documentation/power/devices.txt for details.
519 * @pwr_domain: Provide callbacks that are executed during system suspend, 519 * @pm_domain: Provide callbacks that are executed during system suspend,
520 * hibernation, system resume and during runtime PM transitions 520 * hibernation, system resume and during runtime PM transitions
521 * along with subsystem-level and driver-level callbacks. 521 * along with subsystem-level and driver-level callbacks.
522 * @numa_node: NUMA node this device is close to. 522 * @numa_node: NUMA node this device is close to.
@@ -567,7 +567,7 @@ struct device {
567 void *platform_data; /* Platform specific data, device 567 void *platform_data; /* Platform specific data, device
568 core doesn't touch it */ 568 core doesn't touch it */
569 struct dev_pm_info power; 569 struct dev_pm_info power;
570 struct dev_power_domain *pwr_domain; 570 struct dev_pm_domain *pm_domain;
571 571
572#ifdef CONFIG_NUMA 572#ifdef CONFIG_NUMA
573 int numa_node; /* NUMA node this device is close to */ 573 int numa_node; /* NUMA node this device is close to */
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 411e4f4be52b..f7c84c9abd30 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -461,8 +461,8 @@ struct dev_pm_info {
461 unsigned long active_jiffies; 461 unsigned long active_jiffies;
462 unsigned long suspended_jiffies; 462 unsigned long suspended_jiffies;
463 unsigned long accounting_timestamp; 463 unsigned long accounting_timestamp;
464 void *subsys_data; /* Owned by the subsystem. */
465#endif 464#endif
465 void *subsys_data; /* Owned by the subsystem. */
466}; 466};
467 467
468extern void update_pm_runtime_accounting(struct device *dev); 468extern void update_pm_runtime_accounting(struct device *dev);
@@ -472,7 +472,7 @@ extern void update_pm_runtime_accounting(struct device *dev);
472 * hibernation, system resume and during runtime PM transitions along with 472 * hibernation, system resume and during runtime PM transitions along with
473 * subsystem-level and driver-level callbacks. 473 * subsystem-level and driver-level callbacks.
474 */ 474 */
475struct dev_power_domain { 475struct dev_pm_domain {
476 struct dev_pm_ops ops; 476 struct dev_pm_ops ops;
477}; 477};
478 478
@@ -553,11 +553,17 @@ extern void __suspend_report_result(const char *function, void *fn, int ret);
553extern int device_pm_wait_for_dev(struct device *sub, struct device *dev); 553extern int device_pm_wait_for_dev(struct device *sub, struct device *dev);
554 554
555extern int pm_generic_prepare(struct device *dev); 555extern int pm_generic_prepare(struct device *dev);
556extern int pm_generic_suspend_noirq(struct device *dev);
556extern int pm_generic_suspend(struct device *dev); 557extern int pm_generic_suspend(struct device *dev);
558extern int pm_generic_resume_noirq(struct device *dev);
557extern int pm_generic_resume(struct device *dev); 559extern int pm_generic_resume(struct device *dev);
560extern int pm_generic_freeze_noirq(struct device *dev);
558extern int pm_generic_freeze(struct device *dev); 561extern int pm_generic_freeze(struct device *dev);
562extern int pm_generic_thaw_noirq(struct device *dev);
559extern int pm_generic_thaw(struct device *dev); 563extern int pm_generic_thaw(struct device *dev);
564extern int pm_generic_restore_noirq(struct device *dev);
560extern int pm_generic_restore(struct device *dev); 565extern int pm_generic_restore(struct device *dev);
566extern int pm_generic_poweroff_noirq(struct device *dev);
561extern int pm_generic_poweroff(struct device *dev); 567extern int pm_generic_poweroff(struct device *dev);
562extern void pm_generic_complete(struct device *dev); 568extern void pm_generic_complete(struct device *dev);
563 569
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
new file mode 100644
index 000000000000..21097cb086fe
--- /dev/null
+++ b/include/linux/pm_domain.h
@@ -0,0 +1,108 @@
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>
13
14enum gpd_status {
15 GPD_STATE_ACTIVE = 0, /* PM domain is active */
16 GPD_STATE_BUSY, /* Something is happening to the PM domain */
17 GPD_STATE_REPEAT, /* Power off in progress, to be repeated */
18 GPD_STATE_POWER_OFF, /* PM domain is off */
19};
20
21struct dev_power_governor {
22 bool (*power_down_ok)(struct dev_pm_domain *domain);
23};
24
25struct generic_pm_domain {
26 struct dev_pm_domain domain; /* PM domain operations */
27 struct list_head gpd_list_node; /* Node in the global PM domains list */
28 struct list_head sd_node; /* Node in the parent's subdomain list */
29 struct generic_pm_domain *parent; /* Parent PM domain */
30 struct list_head sd_list; /* List of dubdomains */
31 struct list_head dev_list; /* List of devices */
32 struct mutex lock;
33 struct dev_power_governor *gov;
34 struct work_struct power_off_work;
35 unsigned int in_progress; /* Number of devices being suspended now */
36 unsigned int sd_count; /* Number of subdomains with power "on" */
37 enum gpd_status status; /* Current state of the domain */
38 wait_queue_head_t status_wait_queue;
39 struct task_struct *poweroff_task; /* Powering off task */
40 unsigned int resume_count; /* Number of devices being resumed */
41 unsigned int device_count; /* Number of devices */
42 unsigned int suspended_count; /* System suspend device counter */
43 unsigned int prepared_count; /* Suspend counter of prepared devices */
44 bool suspend_power_off; /* Power status before system suspend */
45 int (*power_off)(struct generic_pm_domain *domain);
46 int (*power_on)(struct generic_pm_domain *domain);
47 int (*start_device)(struct device *dev);
48 int (*stop_device)(struct device *dev);
49 bool (*active_wakeup)(struct device *dev);
50};
51
52static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
53{
54 return container_of(pd, struct generic_pm_domain, domain);
55}
56
57struct dev_list_entry {
58 struct list_head node;
59 struct device *dev;
60 bool need_restore;
61};
62
63#ifdef CONFIG_PM_GENERIC_DOMAINS
64extern int pm_genpd_add_device(struct generic_pm_domain *genpd,
65 struct device *dev);
66extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
67 struct device *dev);
68extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
69 struct generic_pm_domain *new_subdomain);
70extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
71 struct generic_pm_domain *target);
72extern void pm_genpd_init(struct generic_pm_domain *genpd,
73 struct dev_power_governor *gov, bool is_off);
74extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
75extern void pm_genpd_poweroff_unused(void);
76extern void genpd_queue_power_off_work(struct generic_pm_domain *genpd);
77#else
78static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
79 struct device *dev)
80{
81 return -ENOSYS;
82}
83static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd,
84 struct device *dev)
85{
86 return -ENOSYS;
87}
88static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
89 struct generic_pm_domain *new_sd)
90{
91 return -ENOSYS;
92}
93static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
94 struct generic_pm_domain *target)
95{
96 return -ENOSYS;
97}
98static inline void pm_genpd_init(struct generic_pm_domain *genpd,
99 struct dev_power_governor *gov, bool is_off) {}
100static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
101{
102 return -ENOSYS;
103}
104static inline void pm_genpd_poweroff_unused(void) {}
105static inline void genpd_queue_power_off_work(struct generic_pm_domain *gpd) {}
106#endif
107
108#endif /* _LINUX_PM_DOMAIN_H */
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 878cf84baeb1..dfb8539ed686 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -247,41 +247,41 @@ static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
247 247
248struct pm_clk_notifier_block { 248struct pm_clk_notifier_block {
249 struct notifier_block nb; 249 struct notifier_block nb;
250 struct dev_power_domain *pwr_domain; 250