Creation of Cybook 2416 (actually Gen4) repository
This commit is contained in:
mlt
173
kernel/power/Kconfig
Normal file
173
kernel/power/Kconfig
Normal file
@@ -0,0 +1,173 @@
|
||||
config PM
|
||||
bool "Power Management support"
|
||||
depends on !IA64_HP_SIM
|
||||
---help---
|
||||
"Power Management" means that parts of your computer are shut
|
||||
off or put into a power conserving "sleep" mode if they are not
|
||||
being used. There are two competing standards for doing this: APM
|
||||
and ACPI. If you want to use either one, say Y here and then also
|
||||
to the requisite support below.
|
||||
|
||||
Power Management is most important for battery powered laptop
|
||||
computers; if you have a laptop, check out the Linux Laptop home
|
||||
page on the WWW at <http://www.linux-on-laptops.com/> or
|
||||
Tuxmobil - Linux on Mobile Computers at <http://www.tuxmobil.org/>
|
||||
and the Battery Powered Linux mini-HOWTO, available from
|
||||
<http://www.tldp.org/docs.html#howto>.
|
||||
|
||||
Note that, even if you say N here, Linux on the x86 architecture
|
||||
will issue the hlt instruction if nothing is to be done, thereby
|
||||
sending the processor to sleep and saving power.
|
||||
|
||||
config PM_LEGACY
|
||||
bool "Legacy Power Management API (DEPRECATED)"
|
||||
depends on PM
|
||||
default n
|
||||
---help---
|
||||
Support for pm_register() and friends. This old API is obsoleted
|
||||
by the driver model.
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
config PM_CPU_MODE
|
||||
bool "PM_CPU_MODE"
|
||||
depends on PM
|
||||
default y
|
||||
---help---
|
||||
This is for the power consumption of CPU mode
|
||||
|
||||
config PM_DEBUG
|
||||
bool "Power Management Debug Support"
|
||||
depends on PM
|
||||
---help---
|
||||
This option enables verbose debugging support in the Power Management
|
||||
code. This is helpful when debugging and reporting various PM bugs,
|
||||
like suspend support.
|
||||
|
||||
config DISABLE_CONSOLE_SUSPEND
|
||||
bool "Keep console(s) enabled during suspend/resume (DANGEROUS)"
|
||||
depends on PM && PM_DEBUG
|
||||
default n
|
||||
---help---
|
||||
This option turns off the console suspend mechanism that prevents
|
||||
debug messages from reaching the console during the suspend/resume
|
||||
operations. This may be helpful when debugging device drivers'
|
||||
suspend/resume routines, but may itself lead to problems, for example
|
||||
if netconsole is used.
|
||||
|
||||
config PM_TRACE
|
||||
bool "Suspend/resume event tracing"
|
||||
depends on PM && PM_DEBUG && X86_32 && EXPERIMENTAL
|
||||
default n
|
||||
---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,
|
||||
then reboot it, 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.
|
||||
|
||||
config PM_SYSFS_DEPRECATED
|
||||
bool "Driver model /sys/devices/.../power/state files (DEPRECATED)"
|
||||
depends on PM && SYSFS
|
||||
default n
|
||||
help
|
||||
The driver model started out with a sysfs file intended to provide
|
||||
a userspace hook for device power management. This feature has never
|
||||
worked very well, except for limited testing purposes, and so it will
|
||||
be removed. It's not clear that a generic mechanism could really
|
||||
handle the wide variability of device power states; any replacements
|
||||
are likely to be bus or driver specific.
|
||||
|
||||
config SOFTWARE_SUSPEND
|
||||
bool "Software Suspend"
|
||||
depends on PM && SWAP && ((X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP))
|
||||
---help---
|
||||
Enable the suspend to disk (STD) functionality.
|
||||
|
||||
You can suspend your machine with 'echo disk > /sys/power/state'.
|
||||
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
|
||||
ACPI will be used if available.
|
||||
|
||||
It creates an image which is saved in your active swap. Upon the next
|
||||
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
|
||||
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.
|
||||
|
||||
It also works with swap files to a limited extent (for details see
|
||||
<file:Documentation/power/swsusp-and-swap-files.txt>).
|
||||
|
||||
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.
|
||||
|
||||
For more information take a look at <file:Documentation/power/swsusp.txt>.
|
||||
|
||||
config PM_STD_PARTITION
|
||||
string "Default resume partition"
|
||||
depends on SOFTWARE_SUSPEND
|
||||
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.
|
||||
|
||||
config SUSPEND_SMP
|
||||
bool
|
||||
depends on HOTPLUG_CPU && X86 && PM
|
||||
default y
|
||||
|
||||
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
|
||||
and more information, read <file:Documentation/pm.txt> and the
|
||||
Battery Powered Linux mini-HOWTO, available from
|
||||
<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).
|
||||
|
||||
source "drivers/char/s3c-dvfs/Kconfig"
|
||||
Reference in New Issue
Block a user