diff options
Diffstat (limited to 'include/linux/pm.h')
-rw-r--r-- | include/linux/pm.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/include/linux/pm.h b/include/linux/pm.h index 48b71badfb4c..09a309b7b5d2 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h | |||
@@ -104,104 +104,6 @@ extern void (*pm_idle)(void); | |||
104 | extern void (*pm_power_off)(void); | 104 | extern void (*pm_power_off)(void); |
105 | extern void (*pm_power_off_prepare)(void); | 105 | extern void (*pm_power_off_prepare)(void); |
106 | 106 | ||
107 | typedef int __bitwise suspend_state_t; | ||
108 | |||
109 | #define PM_SUSPEND_ON ((__force suspend_state_t) 0) | ||
110 | #define PM_SUSPEND_STANDBY ((__force suspend_state_t) 1) | ||
111 | #define PM_SUSPEND_MEM ((__force suspend_state_t) 3) | ||
112 | #define PM_SUSPEND_MAX ((__force suspend_state_t) 4) | ||
113 | |||
114 | /** | ||
115 | * struct pm_ops - Callbacks for managing platform dependent system sleep | ||
116 | * states. | ||
117 | * | ||
118 | * @valid: Callback to determine if given system sleep state is supported by | ||
119 | * the platform. | ||
120 | * Valid (ie. supported) states are advertised in /sys/power/state. Note | ||
121 | * that it still may be impossible to enter given system sleep state if the | ||
122 | * conditions aren't right. | ||
123 | * There is the %pm_valid_only_mem function available that can be assigned | ||
124 | * to this if the platform only supports mem sleep. | ||
125 | * | ||
126 | * @set_target: Tell the platform which system sleep state is going to be | ||
127 | * entered. | ||
128 | * @set_target() is executed right prior to suspending devices. The | ||
129 | * information conveyed to the platform code by @set_target() should be | ||
130 | * disregarded by the platform as soon as @finish() is executed and if | ||
131 | * @prepare() fails. If @set_target() fails (ie. returns nonzero), | ||
132 | * @prepare(), @enter() and @finish() will not be called by the PM core. | ||
133 | * This callback is optional. However, if it is implemented, the argument | ||
134 | * passed to @prepare(), @enter() and @finish() is meaningless and should | ||
135 | * be ignored. | ||
136 | * | ||
137 | * @prepare: Prepare the platform for entering the system sleep state indicated | ||
138 | * by @set_target() or represented by the argument if @set_target() is not | ||
139 | * implemented. | ||
140 | * @prepare() is called right after devices have been suspended (ie. the | ||
141 | * appropriate .suspend() method has been executed for each device) and | ||
142 | * before the nonboot CPUs are disabled (it is executed with IRQs enabled). | ||
143 | * This callback is optional. It returns 0 on success or a negative | ||
144 | * error code otherwise, in which case the system cannot enter the desired | ||
145 | * sleep state (@enter() and @finish() will not be called in that case). | ||
146 | * | ||
147 | * @enter: Enter the system sleep state indicated by @set_target() or | ||
148 | * represented by the argument if @set_target() is not implemented. | ||
149 | * This callback is mandatory. It returns 0 on success or a negative | ||
150 | * error code otherwise, in which case the system cannot enter the desired | ||
151 | * sleep state. | ||
152 | * | ||
153 | * @finish: Called when the system has just left a sleep state, right after | ||
154 | * the nonboot CPUs have been enabled and before devices are resumed (it is | ||
155 | * executed with IRQs enabled). If @set_target() is not implemented, the | ||
156 | * argument represents the sleep state being left. | ||
157 | * This callback is optional, but should be implemented by the platforms | ||
158 | * that implement @prepare(). If implemented, it is always called after | ||
159 | * @enter() (even if @enter() fails). | ||
160 | */ | ||
161 | struct pm_ops { | ||
162 | int (*valid)(suspend_state_t state); | ||
163 | int (*set_target)(suspend_state_t state); | ||
164 | int (*prepare)(suspend_state_t state); | ||
165 | int (*enter)(suspend_state_t state); | ||
166 | int (*finish)(suspend_state_t state); | ||
167 | }; | ||
168 | |||
169 | #ifdef CONFIG_SUSPEND | ||
170 | extern struct pm_ops *pm_ops; | ||
171 | |||
172 | /** | ||
173 | * pm_set_ops - set platform dependent power management ops | ||
174 | * @pm_ops: The new power management operations to set. | ||
175 | */ | ||
176 | extern void pm_set_ops(struct pm_ops *pm_ops); | ||
177 | extern int pm_valid_only_mem(suspend_state_t state); | ||
178 | |||
179 | /** | ||
180 | * arch_suspend_disable_irqs - disable IRQs for suspend | ||
181 | * | ||
182 | * Disables IRQs (in the default case). This is a weak symbol in the common | ||
183 | * code and thus allows architectures to override it if more needs to be | ||
184 | * done. Not called for suspend to disk. | ||
185 | */ | ||
186 | extern void arch_suspend_disable_irqs(void); | ||
187 | |||
188 | /** | ||
189 | * arch_suspend_enable_irqs - enable IRQs after suspend | ||
190 | * | ||
191 | * Enables IRQs (in the default case). This is a weak symbol in the common | ||
192 | * code and thus allows architectures to override it if more needs to be | ||
193 | * done. Not called for suspend to disk. | ||
194 | */ | ||
195 | extern void arch_suspend_enable_irqs(void); | ||
196 | |||
197 | extern int pm_suspend(suspend_state_t state); | ||
198 | #else /* !CONFIG_SUSPEND */ | ||
199 | #define suspend_valid_only_mem NULL | ||
200 | |||
201 | static inline void pm_set_ops(struct pm_ops *pm_ops) {} | ||
202 | static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; } | ||
203 | #endif /* !CONFIG_SUSPEND */ | ||
204 | |||
205 | /* | 107 | /* |
206 | * Device power management | 108 | * Device power management |
207 | */ | 109 | */ |