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authorRafael J. Wysocki <rjw@sisk.pl>2011-07-15 23:59:09 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-07-15 23:59:09 +0200
commitba1389d74f34c0c6e95cc135a332cd29c29d9c20 (patch)
tree53813843d22cfcfe6d466a5daa44c646f8157980 /Documentation
parentf0c077a8b7f9dce590c760a7b2f3c417dffa52d1 (diff)
parent5ca80817e231723f1399bff495854ba2171103ca (diff)
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 ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/power/devices.txt8
-rw-r--r--Documentation/power/runtime_pm.txt32
2 files changed, 34 insertions, 6 deletions
diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt
index 64565aac6e4..85c6f980b64 100644
--- a/Documentation/power/devices.txt
+++ b/Documentation/power/devices.txt
@@ -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
diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt
index b24875b1ced..4b011b171be 100644
--- a/Documentation/power/runtime_pm.txt
+++ b/Documentation/power/runtime_pm.txt
@@ -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