#ifndef _LINUX_PM_H
#define _LINUX_PM_H
-#ifdef __KERNEL__
-
#include <linux/list.h>
#include <asm/atomic.h>
+#include <asm/errno.h>
/*
* Power management requests... these are passed to pm_send_all() and friends.
};
/* Functions above this comment are list-based old-style power
- * managment. Please avoid using them. */
+ * management. Please avoid using them. */
/*
* Callbacks for platform drivers to implement.
extern void (*pm_power_off)(void);
extern void (*pm_power_off_prepare)(void);
-typedef int __bitwise suspend_state_t;
-
-#define PM_SUSPEND_ON ((__force suspend_state_t) 0)
-#define PM_SUSPEND_STANDBY ((__force suspend_state_t) 1)
-#define PM_SUSPEND_MEM ((__force suspend_state_t) 3)
-#define PM_SUSPEND_MAX ((__force suspend_state_t) 4)
-
-/**
- * struct pm_ops - Callbacks for managing platform dependent system sleep
- * states.
- *
- * @valid: Callback to determine if given system sleep state is supported by
- * the platform.
- * Valid (ie. supported) states are advertised in /sys/power/state. Note
- * that it still may be impossible to enter given system sleep state if the
- * conditions aren't right.
- * There is the %pm_valid_only_mem function available that can be assigned
- * to this if the platform only supports mem sleep.
- *
- * @set_target: Tell the platform which system sleep state is going to be
- * entered.
- * @set_target() is executed right prior to suspending devices. The
- * information conveyed to the platform code by @set_target() should be
- * disregarded by the platform as soon as @finish() is executed and if
- * @prepare() fails. If @set_target() fails (ie. returns nonzero),
- * @prepare(), @enter() and @finish() will not be called by the PM core.
- * This callback is optional. However, if it is implemented, the argument
- * passed to @prepare(), @enter() and @finish() is meaningless and should
- * be ignored.
- *
- * @prepare: Prepare the platform for entering the system sleep state indicated
- * by @set_target() or represented by the argument if @set_target() is not
- * implemented.
- * @prepare() is called right after devices have been suspended (ie. the
- * appropriate .suspend() method has been executed for each device) and
- * before the nonboot CPUs are disabled (it is executed with IRQs enabled).
- * This callback is optional. It returns 0 on success or a negative
- * error code otherwise, in which case the system cannot enter the desired
- * sleep state (@enter() and @finish() will not be called in that case).
- *
- * @enter: Enter the system sleep state indicated by @set_target() or
- * represented by the argument if @set_target() is not implemented.
- * This callback is mandatory. It returns 0 on success or a negative
- * error code otherwise, in which case the system cannot enter the desired
- * sleep state.
- *
- * @finish: Called when the system has just left a sleep state, right after
- * the nonboot CPUs have been enabled and before devices are resumed (it is
- * executed with IRQs enabled). If @set_target() is not implemented, the
- * argument represents the sleep state being left.
- * This callback is optional, but should be implemented by the platforms
- * that implement @prepare(). If implemented, it is always called after
- * @enter() (even if @enter() fails).
- */
-struct pm_ops {
- int (*valid)(suspend_state_t state);
- int (*set_target)(suspend_state_t state);
- int (*prepare)(suspend_state_t state);
- int (*enter)(suspend_state_t state);
- int (*finish)(suspend_state_t state);
-};
-
-#ifdef CONFIG_SUSPEND
-extern struct pm_ops *pm_ops;
-
-/**
- * pm_set_ops - set platform dependent power management ops
- * @pm_ops: The new power management operations to set.
- */
-extern void pm_set_ops(struct pm_ops *pm_ops);
-extern int pm_valid_only_mem(suspend_state_t state);
-
-/**
- * arch_suspend_disable_irqs - disable IRQs for suspend
- *
- * Disables IRQs (in the default case). This is a weak symbol in the common
- * code and thus allows architectures to override it if more needs to be
- * done. Not called for suspend to disk.
- */
-extern void arch_suspend_disable_irqs(void);
-
-/**
- * arch_suspend_enable_irqs - enable IRQs after suspend
- *
- * Enables IRQs (in the default case). This is a weak symbol in the common
- * code and thus allows architectures to override it if more needs to be
- * done. Not called for suspend to disk.
- */
-extern void arch_suspend_enable_irqs(void);
-
-extern int pm_suspend(suspend_state_t state);
-#else /* !CONFIG_SUSPEND */
-#define suspend_valid_only_mem NULL
-
-static inline void pm_set_ops(struct pm_ops *pm_ops) {}
-static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; }
-#endif /* !CONFIG_SUSPEND */
-
/*
* Device power management
*/
* the upcoming system state (such as PCI_D3hot), and enable
* wakeup events as appropriate.
*
+ * HIBERNATE Enter a low power device state appropriate for the hibernation
+ * state (eg. ACPI S4) and enable wakeup events as appropriate.
+ *
* FREEZE Quiesce operations so that a consistent image can be saved;
* but do NOT otherwise enter a low power device state, and do
* NOT emit system wakeup events.
#define PM_EVENT_ON 0
#define PM_EVENT_FREEZE 1
#define PM_EVENT_SUSPEND 2
-#define PM_EVENT_PRETHAW 3
+#define PM_EVENT_HIBERNATE 4
+#define PM_EVENT_PRETHAW 8
+
+#define PM_EVENT_SLEEP (PM_EVENT_SUSPEND | PM_EVENT_HIBERNATE)
#define PMSG_FREEZE ((struct pm_message){ .event = PM_EVENT_FREEZE, })
#define PMSG_PRETHAW ((struct pm_message){ .event = PM_EVENT_PRETHAW, })
#define PMSG_SUSPEND ((struct pm_message){ .event = PM_EVENT_SUSPEND, })
+#define PMSG_HIBERNATE ((struct pm_message){ .event = PM_EVENT_HIBERNATE, })
#define PMSG_ON ((struct pm_message){ .event = PM_EVENT_ON, })
struct dev_pm_info {
pm_message_t power_state;
unsigned can_wakeup:1;
-#ifdef CONFIG_PM_SLEEP
unsigned should_wakeup:1;
+ bool sleeping:1; /* Owned by the PM core */
+#ifdef CONFIG_PM_SLEEP
struct list_head entry;
#endif
};
extern int device_suspend(pm_message_t state);
extern int device_prepare_suspend(pm_message_t state);
-#define device_set_wakeup_enable(dev,val) \
- ((dev)->power.should_wakeup = !!(val))
-#define device_may_wakeup(dev) \
- (device_can_wakeup(dev) && (dev)->power.should_wakeup)
-
extern void __suspend_report_result(const char *function, void *fn, int ret);
#define suspend_report_result(fn, ret) \
__suspend_report_result(__FUNCTION__, fn, ret); \
} while (0)
-/*
- * Platform hook to activate device wakeup capability, if that's not already
- * handled by enable_irq_wake() etc.
- * Returns zero on success, else negative errno
- */
-extern int (*platform_enable_wakeup)(struct device *dev, int is_on);
-
-static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
-{
- if (platform_enable_wakeup)
- return (*platform_enable_wakeup)(dev, is_on);
- return 0;
-}
-
#else /* !CONFIG_PM_SLEEP */
static inline int device_suspend(pm_message_t state)
return 0;
}
-#define device_set_wakeup_enable(dev,val) do{}while(0)
-#define device_may_wakeup(dev) (0)
-
-#define suspend_report_result(fn, ret) do { } while (0)
-
-static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
-{
- return 0;
-}
+#define suspend_report_result(fn, ret) do {} while (0)
#endif /* !CONFIG_PM_SLEEP */
-/* changes to device_may_wakeup take effect on the next pm state change.
- * by default, devices should wakeup if they can.
+/*
+ * Global Power Management flags
+ * Used to keep APM and ACPI from both being active
*/
-#define device_can_wakeup(dev) \
- ((dev)->power.can_wakeup)
-#define device_init_wakeup(dev,val) \
- do { \
- device_can_wakeup(dev) = !!(val); \
- device_set_wakeup_enable(dev,val); \
- } while(0)
-
-#endif /* __KERNEL__ */
+extern unsigned int pm_flags;
+
+#define PM_APM 1
+#define PM_ACPI 2
#endif /* _LINUX_PM_H */
projects / linux-2.6-omap-h63xx.git / blobdiff