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PM / sleep: Two flags for async suspend_noirq and suspend_late 

The patch is a helper adding two new flags for implementing
async threads for suspend_noirq and suspend_late.

Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Liu, Chuansheng 2014-02-18 10:28:44 +08:00 committed by Rafael J. Wysocki
parent 6d0abeca32
commit 3d2699bc17
2 changed files with 24 additions and 2 deletions
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24
drivers/base/power/main.c
View File

@ -91,6 +91,8 @@ void device_pm_sleep_init(struct device *dev)
{
dev->power.is_prepared = false;
dev->power.is_suspended = false;
dev->power.is_noirq_suspended = false;
dev->power.is_late_suspended = false;
init_completion(&dev->power.completion);
complete_all(&dev->power.completion);
dev->power.wakeup = NULL;
@ -479,6 +481,9 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
if (dev->power.syscore)
goto Out;
if (!dev->power.is_noirq_suspended)
goto Out;
if (dev->pm_domain) {
info = "noirq power domain ";
callback = pm_noirq_op(&dev->pm_domain->ops, state);
@ -499,6 +504,7 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
}
error = dpm_run_callback(callback, dev, state, info);
dev->power.is_noirq_suspended = false;
Out:
TRACE_RESUME(error);
@ -561,6 +567,9 @@ static int device_resume_early(struct device *dev, pm_message_t state)
if (dev->power.syscore)
goto Out;
if (!dev->power.is_late_suspended)
goto Out;
if (dev->pm_domain) {
info = "early power domain ";
callback = pm_late_early_op(&dev->pm_domain->ops, state);
@ -581,6 +590,7 @@ static int device_resume_early(struct device *dev, pm_message_t state)
}
error = dpm_run_callback(callback, dev, state, info);
dev->power.is_late_suspended = false;
Out:
TRACE_RESUME(error);
@ -917,6 +927,7 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state)
{
pm_callback_t callback = NULL;
char *info = NULL;
int error;
if (dev->power.syscore)
return 0;
@ -940,7 +951,11 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state)
callback = pm_noirq_op(dev->driver->pm, state);
}
return dpm_run_callback(callback, dev, state, info);
error = dpm_run_callback(callback, dev, state, info);
if (!error)
dev->power.is_noirq_suspended = true;
return error;
}
/**
@ -1003,6 +1018,7 @@ static int device_suspend_late(struct device *dev, pm_message_t state)
{
pm_callback_t callback = NULL;
char *info = NULL;
int error;
__pm_runtime_disable(dev, false);
@ -1028,7 +1044,11 @@ static int device_suspend_late(struct device *dev, pm_message_t state)
callback = pm_late_early_op(dev->driver->pm, state);
}
return dpm_run_callback(callback, dev, state, info);
error = dpm_run_callback(callback, dev, state, info);
if (!error)
dev->power.is_late_suspended = true;
return error;
}
/**

2
include/linux/pm.h
View File

@ -542,6 +542,8 @@ struct dev_pm_info {
unsigned int async_suspend:1;
bool is_prepared:1; /* Owned by the PM core */
bool is_suspended:1; /* Ditto */
bool is_noirq_suspended:1;
bool is_late_suspended:1;
bool ignore_children:1;
bool early_init:1; /* Owned by the PM core */
spinlock_t lock;