2007-07-30 05:27:18 +08:00
|
|
|
config SUSPEND
|
|
|
|
|
bool "Suspend to RAM and standby"
|
PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME)
From the users' point of view CONFIG_PM is really only used for
making it possible to set CONFIG_SUSPEND, CONFIG_HIBERNATION,
CONFIG_PM_RUNTIME and (surprisingly enough) CONFIG_XEN_SAVE_RESTORE
(CONFIG_PM_OPP also depends on CONFIG_PM, but quite artificially).
However, both CONFIG_SUSPEND and CONFIG_HIBERNATION require platform
support (independent of CONFIG_PM) and it is not quite obvious that
CONFIG_PM has to be set for CONFIG_XEN_SAVE_RESTORE to be available.
Thus, from the users' point of view, it would be more logical to
automatically select CONFIG_PM if any of the above options depending
on it are set.
Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME),
which will cause it to be selected when any of CONFIG_SUSPEND,
CONFIG_HIBERNATION, CONFIG_PM_RUNTIME, CONFIG_XEN_SAVE_RESTORE is
set and will clarify its meaning.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-02-11 07:06:30 +08:00
|
|
|
depends on ARCH_SUSPEND_POSSIBLE
|
2007-07-30 05:27:18 +08:00
|
|
|
default y
|
|
|
|
|
---help---
|
|
|
|
|
Allow the system to enter sleep states in which main memory is
|
|
|
|
|
powered and thus its contents are preserved, such as the
|
2007-12-08 09:14:00 +08:00
|
|
|
suspend-to-RAM state (e.g. the ACPI S3 state).
|
2007-07-30 05:27:18 +08:00
|
|
|
|
2008-01-16 12:17:00 +08:00
|
|
|
config SUSPEND_FREEZER
|
|
|
|
|
bool "Enable freezer for suspend to RAM/standby" \
|
|
|
|
|
if ARCH_WANTS_FREEZER_CONTROL || BROKEN
|
|
|
|
|
depends on SUSPEND
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
This allows you to turn off the freezer for suspend. If this is
|
|
|
|
|
done, no tasks are frozen for suspend to RAM/standby.
|
|
|
|
|
|
|
|
|
|
Turning OFF this setting is NOT recommended! If in doubt, say Y.
|
|
|
|
|
|
2011-04-12 04:54:42 +08:00
|
|
|
config HIBERNATE_CALLBACKS
|
|
|
|
|
bool
|
|
|
|
|
|
2007-07-30 05:24:36 +08:00
|
|
|
config HIBERNATION
|
2007-07-30 05:27:18 +08:00
|
|
|
bool "Hibernation (aka 'suspend to disk')"
|
PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME)
From the users' point of view CONFIG_PM is really only used for
making it possible to set CONFIG_SUSPEND, CONFIG_HIBERNATION,
CONFIG_PM_RUNTIME and (surprisingly enough) CONFIG_XEN_SAVE_RESTORE
(CONFIG_PM_OPP also depends on CONFIG_PM, but quite artificially).
However, both CONFIG_SUSPEND and CONFIG_HIBERNATION require platform
support (independent of CONFIG_PM) and it is not quite obvious that
CONFIG_PM has to be set for CONFIG_XEN_SAVE_RESTORE to be available.
Thus, from the users' point of view, it would be more logical to
automatically select CONFIG_PM if any of the above options depending
on it are set.
Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME),
which will cause it to be selected when any of CONFIG_SUSPEND,
CONFIG_HIBERNATION, CONFIG_PM_RUNTIME, CONFIG_XEN_SAVE_RESTORE is
set and will clarify its meaning.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-02-11 07:06:30 +08:00
|
|
|
depends on SWAP && ARCH_HIBERNATION_POSSIBLE
|
2011-04-12 04:54:42 +08:00
|
|
|
select HIBERNATE_CALLBACKS
|
2010-09-10 05:06:23 +08:00
|
|
|
select LZO_COMPRESS
|
|
|
|
|
select LZO_DECOMPRESS
|
2011-10-14 05:58:07 +08:00
|
|
|
select CRC32
|
2005-04-17 06:20:36 +08:00
|
|
|
---help---
|
2007-05-07 05:50:50 +08:00
|
|
|
Enable the suspend to disk (STD) functionality, which is usually
|
|
|
|
|
called "hibernation" in user interfaces. STD checkpoints the
|
|
|
|
|
system and powers it off; and restores that checkpoint on reboot.
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2008-02-06 02:27:12 +08:00
|
|
|
You can suspend your machine with 'echo disk > /sys/power/state'
|
|
|
|
|
after placing resume=/dev/swappartition on the kernel command line
|
|
|
|
|
in your bootloader's configuration file.
|
|
|
|
|
|
2007-03-06 17:42:24 +08:00
|
|
|
Alternatively, you can use the additional userland tools available
|
|
|
|
|
from <http://suspend.sf.net>.
|
|
|
|
|
|
|
|
|
|
In principle it does not require ACPI or APM, although for example
|
2007-05-07 05:50:50 +08:00
|
|
|
ACPI will be used for the final steps when it is available. One
|
|
|
|
|
of the reasons to use software suspend is that the firmware hooks
|
|
|
|
|
for suspend states like suspend-to-RAM (STR) often don't work very
|
|
|
|
|
well with Linux.
|
2007-03-06 17:42:24 +08:00
|
|
|
|
|
|
|
|
It creates an image which is saved in your active swap. Upon the next
|
2005-04-17 06:20:36 +08:00
|
|
|
boot, pass the 'resume=/dev/swappartition' argument to the kernel to
|
|
|
|
|
have it detect the saved image, restore memory state from it, and
|
|
|
|
|
continue to run as before. If you do not want the previous state to
|
2007-03-06 17:42:24 +08:00
|
|
|
be reloaded, then use the 'noresume' kernel command line argument.
|
|
|
|
|
Note, however, that fsck will be run on your filesystems and you will
|
|
|
|
|
need to run mkswap against the swap partition used for the suspend.
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2007-03-06 17:42:24 +08:00
|
|
|
It also works with swap files to a limited extent (for details see
|
|
|
|
|
<file:Documentation/power/swsusp-and-swap-files.txt>).
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2007-03-06 17:42:24 +08:00
|
|
|
Right now you may boot without resuming and resume later but in the
|
|
|
|
|
meantime you cannot use the swap partition(s)/file(s) involved in
|
|
|
|
|
suspending. Also in this case you must not use the filesystems
|
|
|
|
|
that were mounted before the suspend. In particular, you MUST NOT
|
|
|
|
|
MOUNT any journaled filesystems mounted before the suspend or they
|
|
|
|
|
will get corrupted in a nasty way.
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2007-03-06 17:42:24 +08:00
|
|
|
For more information take a look at <file:Documentation/power/swsusp.txt>.
|
2006-09-06 15:03:43 +08:00
|
|
|
|
2011-08-18 02:42:24 +08:00
|
|
|
config ARCH_SAVE_PAGE_KEYS
|
|
|
|
|
bool
|
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
config PM_STD_PARTITION
|
|
|
|
|
string "Default resume partition"
|
2007-07-30 05:24:36 +08:00
|
|
|
depends on HIBERNATION
|
2005-04-17 06:20:36 +08:00
|
|
|
default ""
|
|
|
|
|
---help---
|
|
|
|
|
The default resume partition is the partition that the suspend-
|
|
|
|
|
to-disk implementation will look for a suspended disk image.
|
|
|
|
|
|
|
|
|
|
The partition specified here will be different for almost every user.
|
|
|
|
|
It should be a valid swap partition (at least for now) that is turned
|
|
|
|
|
on before suspending.
|
|
|
|
|
|
|
|
|
|
The partition specified can be overridden by specifying:
|
|
|
|
|
|
|
|
|
|
resume=/dev/<other device>
|
|
|
|
|
|
|
|
|
|
which will set the resume partition to the device specified.
|
|
|
|
|
|
|
|
|
|
Note there is currently not a way to specify which device to save the
|
|
|
|
|
suspended image to. It will simply pick the first available swap
|
|
|
|
|
device.
|
|
|
|
|
|
2011-02-11 07:06:42 +08:00
|
|
|
config PM_SLEEP
|
2011-02-18 08:05:36 +08:00
|
|
|
def_bool y
|
2011-04-12 04:54:48 +08:00
|
|
|
depends on SUSPEND || HIBERNATE_CALLBACKS
|
2011-02-11 07:06:42 +08:00
|
|
|
|
|
|
|
|
config PM_SLEEP_SMP
|
2011-02-18 08:05:36 +08:00
|
|
|
def_bool y
|
2011-02-11 07:06:42 +08:00
|
|
|
depends on SMP
|
|
|
|
|
depends on ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE
|
|
|
|
|
depends on PM_SLEEP
|
|
|
|
|
select HOTPLUG
|
|
|
|
|
select HOTPLUG_CPU
|
|
|
|
|
|
2012-04-30 04:53:22 +08:00
|
|
|
config PM_AUTOSLEEP
|
|
|
|
|
bool "Opportunistic sleep"
|
|
|
|
|
depends on PM_SLEEP
|
|
|
|
|
default n
|
|
|
|
|
---help---
|
|
|
|
|
Allow the kernel to trigger a system transition into a global sleep
|
|
|
|
|
state automatically whenever there are no active wakeup sources.
|
|
|
|
|
|
PM / Sleep: Add user space interface for manipulating wakeup sources, v3
Android allows user space to manipulate wakelocks using two
sysfs file located in /sys/power/, wake_lock and wake_unlock.
Writing a wakelock name and optionally a timeout to the wake_lock
file causes the wakelock whose name was written to be acquired (it
is created before is necessary), optionally with the given timeout.
Writing the name of a wakelock to wake_unlock causes that wakelock
to be released.
Implement an analogous interface for user space using wakeup sources.
Add the /sys/power/wake_lock and /sys/power/wake_unlock files
allowing user space to create, activate and deactivate wakeup
sources, such that writing a name and optionally a timeout to
wake_lock causes the wakeup source of that name to be activated,
optionally with the given timeout. If that wakeup source doesn't
exist, it will be created and then activated. Writing a name to
wake_unlock causes the wakeup source of that name, if there is one,
to be deactivated. Wakeup sources created with the help of
wake_lock that haven't been used for more than 5 minutes are garbage
collected and destroyed. Moreover, there can be only WL_NUMBER_LIMIT
wakeup sources created with the help of wake_lock present at a time.
The data type used to track wakeup sources created by user space is
called "struct wakelock" to indicate the origins of this feature.
This version of the patch includes an rbtree manipulation fix from John Stultz.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NeilBrown <neilb@suse.de>
2012-04-30 04:53:42 +08:00
|
|
|
config PM_WAKELOCKS
|
|
|
|
|
bool "User space wakeup sources interface"
|
|
|
|
|
depends on PM_SLEEP
|
|
|
|
|
default n
|
|
|
|
|
---help---
|
|
|
|
|
Allow user space to create, activate and deactivate wakeup source
|
|
|
|
|
objects with the help of a sysfs-based interface.
|
|
|
|
|
|
2012-05-06 03:57:20 +08:00
|
|
|
config PM_WAKELOCKS_LIMIT
|
|
|
|
|
int "Maximum number of user space wakeup sources (0 = no limit)"
|
|
|
|
|
range 0 100000
|
|
|
|
|
default 100
|
|
|
|
|
depends on PM_WAKELOCKS
|
|
|
|
|
|
2012-05-06 03:57:28 +08:00
|
|
|
config PM_WAKELOCKS_GC
|
|
|
|
|
bool "Garbage collector for user space wakeup sources"
|
|
|
|
|
depends on PM_WAKELOCKS
|
|
|
|
|
default y
|
|
|
|
|
|
2011-02-11 07:06:42 +08:00
|
|
|
config PM_RUNTIME
|
|
|
|
|
bool "Run-time PM core functionality"
|
|
|
|
|
depends on !IA64_HP_SIM
|
|
|
|
|
---help---
|
|
|
|
|
Enable functionality allowing I/O devices to be put into energy-saving
|
|
|
|
|
(low power) states at run time (or autosuspended) after a specified
|
|
|
|
|
period of inactivity and woken up in response to a hardware-generated
|
|
|
|
|
wake-up event or a driver's request.
|
|
|
|
|
|
|
|
|
|
Hardware support is generally required for this functionality to work
|
|
|
|
|
and the bus type drivers of the buses the devices are on are
|
|
|
|
|
responsible for the actual handling of the autosuspend requests and
|
|
|
|
|
wake-up events.
|
|
|
|
|
|
|
|
|
|
config PM
|
2011-02-18 08:05:36 +08:00
|
|
|
def_bool y
|
2011-02-11 07:06:42 +08:00
|
|
|
depends on PM_SLEEP || PM_RUNTIME
|
|
|
|
|
|
|
|
|
|
config PM_DEBUG
|
|
|
|
|
bool "Power Management Debug Support"
|
|
|
|
|
depends on PM
|
|
|
|
|
---help---
|
|
|
|
|
This option enables various debugging support in the Power Management
|
|
|
|
|
code. This is helpful when debugging and reporting PM bugs, like
|
|
|
|
|
suspend support.
|
|
|
|
|
|
|
|
|
|
config PM_ADVANCED_DEBUG
|
|
|
|
|
bool "Extra PM attributes in sysfs for low-level debugging/testing"
|
|
|
|
|
depends on PM_DEBUG
|
|
|
|
|
---help---
|
|
|
|
|
Add extra sysfs attributes allowing one to access some Power Management
|
|
|
|
|
fields of device objects from user space. If you are not a kernel
|
|
|
|
|
developer interested in debugging/testing Power Management, say "no".
|
|
|
|
|
|
|
|
|
|
config PM_TEST_SUSPEND
|
|
|
|
|
bool "Test suspend/resume and wakealarm during bootup"
|
|
|
|
|
depends on SUSPEND && PM_DEBUG && RTC_CLASS=y
|
|
|
|
|
---help---
|
|
|
|
|
This option will let you suspend your machine during bootup, and
|
|
|
|
|
make it wake up a few seconds later using an RTC wakeup alarm.
|
|
|
|
|
Enable this with a kernel parameter like "test_suspend=mem".
|
|
|
|
|
|
|
|
|
|
You probably want to have your system's RTC driver statically
|
|
|
|
|
linked, ensuring that it's available when this test runs.
|
|
|
|
|
|
2012-06-21 06:19:33 +08:00
|
|
|
config PM_SLEEP_DEBUG
|
2011-02-11 07:06:42 +08:00
|
|
|
def_bool y
|
2011-02-12 03:31:11 +08:00
|
|
|
depends on PM_DEBUG && PM_SLEEP
|
2011-02-11 07:06:42 +08:00
|
|
|
|
|
|
|
|
config PM_TRACE
|
|
|
|
|
bool
|
|
|
|
|
help
|
|
|
|
|
This enables code to save the last PM event point across
|
|
|
|
|
reboot. The architecture needs to support this, x86 for
|
|
|
|
|
example does by saving things in the RTC, see below.
|
|
|
|
|
|
|
|
|
|
The architecture specific code must provide the extern
|
|
|
|
|
functions from <linux/resume-trace.h> as well as the
|
|
|
|
|
<asm/resume-trace.h> header with a TRACE_RESUME() macro.
|
|
|
|
|
|
|
|
|
|
The way the information is presented is architecture-
|
|
|
|
|
dependent, x86 will print the information during a
|
|
|
|
|
late_initcall.
|
|
|
|
|
|
|
|
|
|
config PM_TRACE_RTC
|
|
|
|
|
bool "Suspend/resume event tracing"
|
2012-06-21 06:19:33 +08:00
|
|
|
depends on PM_SLEEP_DEBUG
|
2011-02-11 07:06:42 +08:00
|
|
|
depends on X86
|
|
|
|
|
select PM_TRACE
|
|
|
|
|
---help---
|
|
|
|
|
This enables some cheesy code to save the last PM event point in the
|
|
|
|
|
RTC across reboots, so that you can debug a machine that just hangs
|
|
|
|
|
during suspend (or more commonly, during resume).
|
|
|
|
|
|
|
|
|
|
To use this debugging feature you should attempt to suspend the
|
|
|
|
|
machine, reboot it and then run
|
|
|
|
|
|
|
|
|
|
dmesg -s 1000000 | grep 'hash matches'
|
|
|
|
|
|
|
|
|
|
CAUTION: this option will cause your machine's real-time clock to be
|
|
|
|
|
set to an invalid time after a resume.
|
|
|
|
|
|
2007-02-10 01:08:57 +08:00
|
|
|
config APM_EMULATION
|
|
|
|
|
tristate "Advanced Power Management Emulation"
|
|
|
|
|
depends on PM && SYS_SUPPORTS_APM_EMULATION
|
|
|
|
|
help
|
|
|
|
|
APM is a BIOS specification for saving power using several different
|
|
|
|
|
techniques. This is mostly useful for battery powered laptops with
|
|
|
|
|
APM compliant BIOSes. If you say Y here, the system time will be
|
|
|
|
|
reset after a RESUME operation, the /proc/apm device will provide
|
|
|
|
|
battery status information, and user-space programs will receive
|
|
|
|
|
notification of APM "events" (e.g. battery status change).
|
|
|
|
|
|
|
|
|
|
In order to use APM, you will need supporting software. For location
|
2011-07-09 05:11:16 +08:00
|
|
|
and more information, read <file:Documentation/power/apm-acpi.txt>
|
|
|
|
|
and the Battery Powered Linux mini-HOWTO, available from
|
2007-02-10 01:08:57 +08:00
|
|
|
<http://www.tldp.org/docs.html#howto>.
|
|
|
|
|
|
|
|
|
|
This driver does not spin down disk drives (see the hdparm(8)
|
|
|
|
|
manpage ("man 8 hdparm") for that), and it doesn't turn off
|
|
|
|
|
VESA-compliant "green" monitors.
|
|
|
|
|
|
|
|
|
|
Generally, if you don't have a battery in your machine, there isn't
|
|
|
|
|
much point in using this driver and you should say N. If you get
|
|
|
|
|
random kernel OOPSes or reboots that don't seem to be related to
|
|
|
|
|
anything, try disabling/enabling this option (or disabling/enabling
|
|
|
|
|
APM in your BIOS).
|
2009-08-19 05:38:32 +08:00
|
|
|
|
2010-11-11 08:51:26 +08:00
|
|
|
config ARCH_HAS_OPP
|
|
|
|
|
bool
|
|
|
|
|
|
PM: Introduce library for device-specific OPPs (v7)
SoCs have a standard set of tuples consisting of frequency and
voltage pairs that the device will support per voltage domain. These
are called Operating Performance Points or OPPs. The actual
definitions of OPP varies over silicon versions. For a specific domain,
we can have a set of {frequency, voltage} pairs. As the kernel boots
and more information is available, a default set of these are activated
based on the precise nature of device. Further on operation, based on
conditions prevailing in the system (such as temperature), some OPP
availability may be temporarily controlled by the SoC frameworks.
To implement an OPP, some sort of power management support is necessary
hence this library depends on CONFIG_PM.
Contributions include:
Sanjeev Premi for the initial concept:
http://patchwork.kernel.org/patch/50998/
Kevin Hilman for converting original design to device-based.
Kevin Hilman and Paul Walmsey for cleaning up many of the function
abstractions, improvements and data structure handling.
Romit Dasgupta for using enums instead of opp pointers.
Thara Gopinath, Eduardo Valentin and Vishwanath BS for fixes and
cleanups.
Linus Walleij for recommending this layer be made generic for usage
in other architectures beyond OMAP and ARM.
Mark Brown, Andrew Morton, Rafael J. Wysocki, Paul E. McKenney for
valuable improvements.
Discussions and comments from:
http://marc.info/?l=linux-omap&m=126033945313269&w=2
http://marc.info/?l=linux-omap&m=125482970102327&w=2
http://marc.info/?t=125809247500002&r=1&w=2
http://marc.info/?l=linux-omap&m=126025973426007&w=2
http://marc.info/?t=128152609200064&r=1&w=2
http://marc.info/?t=128468723000002&r=1&w=2
incorporated.
v1: http://marc.info/?t=128468723000002&r=1&w=2
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-10-13 06:13:10 +08:00
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config PM_OPP
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bool "Operating Performance Point (OPP) Layer library"
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2010-11-11 08:51:26 +08:00
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depends on ARCH_HAS_OPP
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PM: Introduce library for device-specific OPPs (v7)
SoCs have a standard set of tuples consisting of frequency and
voltage pairs that the device will support per voltage domain. These
are called Operating Performance Points or OPPs. The actual
definitions of OPP varies over silicon versions. For a specific domain,
we can have a set of {frequency, voltage} pairs. As the kernel boots
and more information is available, a default set of these are activated
based on the precise nature of device. Further on operation, based on
conditions prevailing in the system (such as temperature), some OPP
availability may be temporarily controlled by the SoC frameworks.
To implement an OPP, some sort of power management support is necessary
hence this library depends on CONFIG_PM.
Contributions include:
Sanjeev Premi for the initial concept:
http://patchwork.kernel.org/patch/50998/
Kevin Hilman for converting original design to device-based.
Kevin Hilman and Paul Walmsey for cleaning up many of the function
abstractions, improvements and data structure handling.
Romit Dasgupta for using enums instead of opp pointers.
Thara Gopinath, Eduardo Valentin and Vishwanath BS for fixes and
cleanups.
Linus Walleij for recommending this layer be made generic for usage
in other architectures beyond OMAP and ARM.
Mark Brown, Andrew Morton, Rafael J. Wysocki, Paul E. McKenney for
valuable improvements.
Discussions and comments from:
http://marc.info/?l=linux-omap&m=126033945313269&w=2
http://marc.info/?l=linux-omap&m=125482970102327&w=2
http://marc.info/?t=125809247500002&r=1&w=2
http://marc.info/?l=linux-omap&m=126025973426007&w=2
http://marc.info/?t=128152609200064&r=1&w=2
http://marc.info/?t=128468723000002&r=1&w=2
incorporated.
v1: http://marc.info/?t=128468723000002&r=1&w=2
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-10-13 06:13:10 +08:00
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---help---
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SOCs have a standard set of tuples consisting of frequency and
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voltage pairs that the device will support per voltage domain. This
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is called Operating Performance Point or OPP. The actual definitions
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of OPP varies over silicon within the same family of devices.
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OPP layer organizes the data internally using device pointers
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representing individual voltage domains and provides SOC
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implementations a ready to use framework to manage OPPs.
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For more information, read <file:Documentation/power/opp.txt>
|
2011-04-30 06:25:44 +08:00
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2011-07-02 04:13:37 +08:00
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config PM_CLK
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2011-04-30 06:25:44 +08:00
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def_bool y
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2011-07-02 04:13:37 +08:00
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depends on PM && HAVE_CLK
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2011-07-02 04:12:45 +08:00
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config PM_GENERIC_DOMAINS
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bool
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depends on PM
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2011-08-14 19:34:31 +08:00
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config PM_GENERIC_DOMAINS_RUNTIME
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def_bool y
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depends on PM_RUNTIME && PM_GENERIC_DOMAINS
|
2011-02-10 18:04:45 +08:00
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config CPU_PM
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bool
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depends on SUSPEND || CPU_IDLE
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