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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-09 09:44:28 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-09 09:44:28 -0800 |
commit | 2fd592e45b9c89d69e126f172d0f991e2af955e5 (patch) | |
tree | bacc34dbffb5da09b40840f409f7fad462e0acac /kernel/power/Kconfig | |
parent | 2affc857efdf7dacace234b63d289d67260c95a6 (diff) | |
parent | 0a9b0db19262dbb09f3a34195e68cafd5dc3fa10 (diff) |
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm:
[APM] SH: Convert to use shared APM emulation.
[APM] MIPS: Convert to use shared APM emulation.
[APM] ARM: Convert to use shared APM emulation.
[APM] Add shared version of APM emulation
Diffstat (limited to 'kernel/power/Kconfig')
-rw-r--r-- | kernel/power/Kconfig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index ed296225dcd..95f6657fff7 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -131,3 +131,29 @@ 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). |