Merge branch 'pm-domains' into for-linus

* pm-domains: (33 commits)
  ARM / shmobile: Return -EBUSY from A4LC power off if A3RV is active
  PM / Domains: Take .power_off() error code into account
  ARM / shmobile: Use genpd_queue_power_off_work()
  ARM / shmobile: Use pm_genpd_poweroff_unused()
  PM / Domains: Introduce function to power off all unused PM domains
  PM / Domains: Queue up power off work only if it is not pending
  PM / Domains: Improve handling of wakeup devices during system suspend
  PM / Domains: Do not restore all devices on power off error
  PM / Domains: Allow callbacks to execute all runtime PM helpers
  PM / Domains: Do not execute device callbacks under locks
  PM / Domains: Make failing pm_genpd_prepare() clean up properly
  PM / Domains: Set device state to "active" during system resume
  ARM: mach-shmobile: sh7372 A3RV requires A4LC
  PM / Domains: Export pm_genpd_poweron() in header
  ARM: mach-shmobile: sh7372 late pm domain off
  ARM: mach-shmobile: Runtime PM late init callback
  ARM: mach-shmobile: sh7372 D4 support
  ARM: mach-shmobile: sh7372 A4MP support
  ARM: mach-shmobile: sh7372: make sure that fsi is peripheral of spu2
  ARM: mach-shmobile: sh7372 A3SG support
  ...
This commit is contained in:
Rafael J. Wysocki
2011-07-15 23:59:09 +02:00
24 changed files with 1937 additions and 171 deletions

View File

@@ -506,8 +506,8 @@ routines. Nevertheless, different callback pointers are used in case there is a
situation where it actually matters.
Device Power Domains
--------------------
Device Power Management Domains
-------------------------------
Sometimes devices share reference clocks or other power resources. In those
cases it generally is not possible to put devices into low-power states
individually. Instead, a set of devices sharing a power resource can be put
@@ -516,8 +516,8 @@ power resource. Of course, they also need to be put into the full-power state
together, by turning the shared power resource on. A set of devices with this
property is often referred to as a power domain.
Support for power domains is provided through the pwr_domain field of struct
device. This field is a pointer to an object of type struct dev_power_domain,
Support for power domains is provided through the pm_domain field of struct
device. This field is a pointer to an object of type struct dev_pm_domain,
defined in include/linux/pm.h, providing a set of power management callbacks
analogous to the subsystem-level and device driver callbacks that are executed
for the given device during all power transitions, instead of the respective

View File

@@ -606,32 +606,60 @@ driver/base/power/generic_ops.c:
callback provided by its driver and return its result, or return 0 if not
defined
int pm_generic_suspend_noirq(struct device *dev);
- if pm_runtime_suspended(dev) returns "false", invoke the ->suspend_noirq()
callback provided by the device's driver and return its result, or return
0 if not defined
int pm_generic_resume(struct device *dev);
- invoke the ->resume() callback provided by the driver of this device and,
if successful, change the device's runtime PM status to 'active'
int pm_generic_resume_noirq(struct device *dev);
- invoke the ->resume_noirq() callback provided by the driver of this device
int pm_generic_freeze(struct device *dev);
- if the device has not been suspended at run time, invoke the ->freeze()
callback provided by its driver and return its result, or return 0 if not
defined
int pm_generic_freeze_noirq(struct device *dev);
- if pm_runtime_suspended(dev) returns "false", invoke the ->freeze_noirq()
callback provided by the device's driver and return its result, or return
0 if not defined
int pm_generic_thaw(struct device *dev);
- if the device has not been suspended at run time, invoke the ->thaw()
callback provided by its driver and return its result, or return 0 if not
defined
int pm_generic_thaw_noirq(struct device *dev);
- if pm_runtime_suspended(dev) returns "false", invoke the ->thaw_noirq()
callback provided by the device's driver and return its result, or return
0 if not defined
int pm_generic_poweroff(struct device *dev);
- if the device has not been suspended at run time, invoke the ->poweroff()
callback provided by its driver and return its result, or return 0 if not
defined
int pm_generic_poweroff_noirq(struct device *dev);
- if pm_runtime_suspended(dev) returns "false", run the ->poweroff_noirq()
callback provided by the device's driver and return its result, or return
0 if not defined
int pm_generic_restore(struct device *dev);
- invoke the ->restore() callback provided by the driver of this device and,
if successful, change the device's runtime PM status to 'active'
int pm_generic_restore_noirq(struct device *dev);
- invoke the ->restore_noirq() callback provided by the device's driver
These functions can be assigned to the ->runtime_idle(), ->runtime_suspend(),
->runtime_resume(), ->suspend(), ->resume(), ->freeze(), ->thaw(), ->poweroff(),
or ->restore() callback pointers in the subsystem-level dev_pm_ops structures.
->runtime_resume(), ->suspend(), ->suspend_noirq(), ->resume(),
->resume_noirq(), ->freeze(), ->freeze_noirq(), ->thaw(), ->thaw_noirq(),
->poweroff(), ->poweroff_noirq(), ->restore(), ->restore_noirq() callback
pointers in the subsystem-level dev_pm_ops structures.
If a subsystem wishes to use all of them at the same time, it can simply assign
the GENERIC_SUBSYS_PM_OPS macro, defined in include/linux/pm.h, to its