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-rw-r--r--include/linux/pm.h31
-rw-r--r--include/linux/suspend.h24
2 files changed, 25 insertions, 30 deletions
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 6e8fa3049e5d..87545e0f0b58 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -107,26 +107,11 @@ typedef int __bitwise suspend_state_t;
107#define PM_SUSPEND_ON ((__force suspend_state_t) 0) 107#define PM_SUSPEND_ON ((__force suspend_state_t) 0)
108#define PM_SUSPEND_STANDBY ((__force suspend_state_t) 1) 108#define PM_SUSPEND_STANDBY ((__force suspend_state_t) 1)
109#define PM_SUSPEND_MEM ((__force suspend_state_t) 3) 109#define PM_SUSPEND_MEM ((__force suspend_state_t) 3)
110#define PM_SUSPEND_DISK ((__force suspend_state_t) 4) 110#define PM_SUSPEND_MAX ((__force suspend_state_t) 4)
111#define PM_SUSPEND_MAX ((__force suspend_state_t) 5)
112
113typedef int __bitwise suspend_disk_method_t;
114
115/* invalid must be 0 so struct pm_ops initialisers can leave it out */
116#define PM_DISK_INVALID ((__force suspend_disk_method_t) 0)
117#define PM_DISK_PLATFORM ((__force suspend_disk_method_t) 1)
118#define PM_DISK_SHUTDOWN ((__force suspend_disk_method_t) 2)
119#define PM_DISK_REBOOT ((__force suspend_disk_method_t) 3)
120#define PM_DISK_TEST ((__force suspend_disk_method_t) 4)
121#define PM_DISK_TESTPROC ((__force suspend_disk_method_t) 5)
122#define PM_DISK_MAX ((__force suspend_disk_method_t) 6)
123 111
124/** 112/**
125 * struct pm_ops - Callbacks for managing platform dependent suspend states. 113 * struct pm_ops - Callbacks for managing platform dependent suspend states.
126 * @valid: Callback to determine whether the given state can be entered. 114 * @valid: Callback to determine whether the given state can be entered.
127 * If %CONFIG_SOFTWARE_SUSPEND is set then %PM_SUSPEND_DISK is
128 * always valid and never passed to this call. If not assigned,
129 * no suspend states are valid.
130 * Valid states are advertised in /sys/power/state but can still 115 * Valid states are advertised in /sys/power/state but can still
131 * be rejected by prepare or enter if the conditions aren't right. 116 * be rejected by prepare or enter if the conditions aren't right.
132 * There is a %pm_valid_only_mem function available that can be assigned 117 * There is a %pm_valid_only_mem function available that can be assigned
@@ -140,24 +125,12 @@ typedef int __bitwise suspend_disk_method_t;
140 * 125 *
141 * @finish: Called when the system has left the given state and all devices 126 * @finish: Called when the system has left the given state and all devices
142 * are resumed. The return value is ignored. 127 * are resumed. The return value is ignored.
143 *
144 * @pm_disk_mode: The generic code always allows one of the shutdown methods
145 * %PM_DISK_SHUTDOWN, %PM_DISK_REBOOT, %PM_DISK_TEST and
146 * %PM_DISK_TESTPROC. If this variable is set, the mode it is set
147 * to is allowed in addition to those modes and is also made default.
148 * When this mode is sent selected, the @prepare call will be called
149 * before suspending to disk (if present), the @enter call should be
150 * present and will be called after all state has been saved and the
151 * machine is ready to be powered off; the @finish callback is called
152 * after state has been restored. All these calls are called with
153 * %PM_SUSPEND_DISK as the state.
154 */ 128 */
155struct pm_ops { 129struct pm_ops {
156 int (*valid)(suspend_state_t state); 130 int (*valid)(suspend_state_t state);
157 int (*prepare)(suspend_state_t state); 131 int (*prepare)(suspend_state_t state);
158 int (*enter)(suspend_state_t state); 132 int (*enter)(suspend_state_t state);
159 int (*finish)(suspend_state_t state); 133 int (*finish)(suspend_state_t state);
160 suspend_disk_method_t pm_disk_mode;
161}; 134};
162 135
163/** 136/**
@@ -276,8 +249,6 @@ extern void device_power_up(void);
276extern void device_resume(void); 249extern void device_resume(void);
277 250
278#ifdef CONFIG_PM 251#ifdef CONFIG_PM
279extern suspend_disk_method_t pm_disk_mode;
280
281extern int device_suspend(pm_message_t state); 252extern int device_suspend(pm_message_t state);
282extern int device_prepare_suspend(pm_message_t state); 253extern int device_prepare_suspend(pm_message_t state);
283 254
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 9d2aa1a12aa0..d74da9122b60 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -32,6 +32,24 @@ static inline int pm_prepare_console(void) { return 0; }
32static inline void pm_restore_console(void) {} 32static inline void pm_restore_console(void) {}
33#endif 33#endif
34 34
35/**
36 * struct hibernation_ops - hibernation platform support
37 *
38 * The methods in this structure allow a platform to override the default
39 * mechanism of shutting down the machine during a hibernation transition.
40 *
41 * All three methods must be assigned.
42 *
43 * @prepare: prepare system for hibernation
44 * @enter: shut down system after state has been saved to disk
45 * @finish: finish/clean up after state has been reloaded
46 */
47struct hibernation_ops {
48 int (*prepare)(void);
49 int (*enter)(void);
50 void (*finish)(void);
51};
52
35#if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) 53#if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND)
36/* kernel/power/snapshot.c */ 54/* kernel/power/snapshot.c */
37extern void __init register_nosave_region(unsigned long, unsigned long); 55extern void __init register_nosave_region(unsigned long, unsigned long);
@@ -39,11 +57,17 @@ extern int swsusp_page_is_forbidden(struct page *);
39extern void swsusp_set_page_free(struct page *); 57extern void swsusp_set_page_free(struct page *);
40extern void swsusp_unset_page_free(struct page *); 58extern void swsusp_unset_page_free(struct page *);
41extern unsigned long get_safe_page(gfp_t gfp_mask); 59extern unsigned long get_safe_page(gfp_t gfp_mask);
60
61extern void hibernation_set_ops(struct hibernation_ops *ops);
62extern int hibernate(void);
42#else 63#else
43static inline void register_nosave_region(unsigned long b, unsigned long e) {} 64static inline void register_nosave_region(unsigned long b, unsigned long e) {}
44static inline int swsusp_page_is_forbidden(struct page *p) { return 0; } 65static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
45static inline void swsusp_set_page_free(struct page *p) {} 66static inline void swsusp_set_page_free(struct page *p) {}
46static inline void swsusp_unset_page_free(struct page *p) {} 67static inline void swsusp_unset_page_free(struct page *p) {}
68
69static inline void hibernation_set_ops(struct hibernation_ops *ops) {}
70static inline int hibernate(void) { return -ENOSYS; }
47#endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */ 71#endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */
48 72
49void save_processor_state(void); 73void save_processor_state(void);