#include <linux/resume-trace.h>
#include <linux/freezer.h>
#include <linux/vmstat.h>
+#include <linux/syscalls.h>
#include "power.h"
DEFINE_MUTEX(pm_mutex);
+unsigned int pm_flags;
+EXPORT_SYMBOL(pm_flags);
+
#ifdef CONFIG_SUSPEND
/* This is just an arbitrary number */
#define FREE_PAGE_NUMBER (100)
-struct pm_ops *pm_ops;
+static struct platform_suspend_ops *suspend_ops;
/**
- * pm_set_ops - Set the global power method table.
+ * suspend_set_ops - Set the global suspend method table.
* @ops: Pointer to ops structure.
*/
-void pm_set_ops(struct pm_ops * ops)
+void suspend_set_ops(struct platform_suspend_ops *ops)
{
mutex_lock(&pm_mutex);
- pm_ops = ops;
+ suspend_ops = ops;
mutex_unlock(&pm_mutex);
}
/**
- * pm_valid_only_mem - generic memory-only valid callback
+ * suspend_valid_only_mem - generic memory-only valid callback
*
- * pm_ops drivers that implement mem suspend only and only need
+ * Platform drivers that implement mem suspend only and only need
* to check for that in their .valid callback can use this instead
* of rolling their own .valid callback.
*/
-int pm_valid_only_mem(suspend_state_t state)
+int suspend_valid_only_mem(suspend_state_t state)
{
return state == PM_SUSPEND_MEM;
}
-
-static inline void pm_finish(suspend_state_t state)
-{
- if (pm_ops->finish)
- pm_ops->finish(state);
-}
-
/**
* suspend_prepare - Do prep work before entering low-power state.
*
int error;
unsigned int free_pages;
- if (!pm_ops || !pm_ops->enter)
+ if (!suspend_ops || !suspend_ops->enter)
return -EPERM;
error = pm_notifier_call_chain(PM_SUSPEND_PREPARE);
printk(KERN_ERR "Some devices failed to power down\n");
goto Done;
}
- error = pm_ops->enter(state);
+ error = suspend_ops->enter(state);
device_power_up();
Done:
arch_suspend_enable_irqs();
{
int error;
- if (!pm_ops)
+ if (!suspend_ops)
return -ENOSYS;
- if (pm_ops->set_target) {
- error = pm_ops->set_target(state);
+ if (suspend_ops->set_target) {
+ error = suspend_ops->set_target(state);
if (error)
return error;
}
printk(KERN_ERR "Some devices failed to suspend\n");
goto Resume_console;
}
- if (pm_ops->prepare) {
- error = pm_ops->prepare(state);
+ if (suspend_ops->prepare) {
+ error = suspend_ops->prepare();
if (error)
goto Resume_devices;
}
suspend_enter(state);
enable_nonboot_cpus();
- pm_finish(state);
+ if (suspend_ops->finish)
+ suspend_ops->finish();
Resume_devices:
device_resume();
Resume_console:
/* All states need lowlevel support and need to be valid
* to the lowlevel implementation, no valid callback
* implies that none are valid. */
- if (!pm_ops || !pm_ops->valid || !pm_ops->valid(state))
+ if (!suspend_ops || !suspend_ops->valid || !suspend_ops->valid(state))
return 0;
return 1;
}
if (!valid_state(state))
return -ENODEV;
+
if (!mutex_trylock(&pm_mutex))
return -EBUSY;
+ printk("Syncing filesystems ... ");
+ sys_sync();
+ printk("done.\n");
+
pr_debug("PM: Preparing system for %s sleep\n", pm_states[state]);
if ((error = suspend_prepare()))
goto Unlock;
#endif /* CONFIG_SUSPEND */
-decl_subsys(power,NULL,NULL);
-
+struct kobject *power_kobj;
/**
* state - control system power state.
* proper enumerated value, and initiates a suspend transition.
*/
-static ssize_t state_show(struct kset *kset, char *buf)
+static ssize_t state_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
{
char *s = buf;
#ifdef CONFIG_SUSPEND
return (s - buf);
}
-static ssize_t state_store(struct kset *kset, const char *buf, size_t n)
+static ssize_t state_store(struct kobject *kobj, struct kobj_attribute *attr,
+ const char *buf, size_t n)
{
#ifdef CONFIG_SUSPEND
suspend_state_t state = PM_SUSPEND_STANDBY;
#ifdef CONFIG_PM_TRACE
int pm_trace_enabled;
-static ssize_t pm_trace_show(struct kset *kset, char *buf)
+static ssize_t pm_trace_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
{
return sprintf(buf, "%d\n", pm_trace_enabled);
}
static ssize_t
-pm_trace_store(struct kset *kset, const char *buf, size_t n)
+pm_trace_store(struct kobject *kobj, struct kobj_attribute *attr,
+ const char *buf, size_t n)
{
int val;
static int __init pm_init(void)
{
- int error = subsystem_register(&power_subsys);
- if (!error)
- error = sysfs_create_group(&power_subsys.kobj,&attr_group);
- return error;
+ power_kobj = kobject_create_and_add("power", NULL);
+ if (!power_kobj)
+ return -ENOMEM;
+ return sysfs_create_group(power_kobj, &attr_group);
}
core_initcall(pm_init);