On Thursday, 26 of June 2008, Len Brown wrote: > > > > > > > - Linux Power Management Support > > > > > > - > > > > > > -This document briefly describes how to use power management with your > > > > > > -Linux system and how to add power management support to Linux drivers. > > > > > > - > > > > > > -APM or ACPI? > > > > > > ------------- > > > > > > -If you have a relatively recent x86 mobile, desktop, or server system, > > > > > > -odds are it supports either Advanced Power Management (APM) or > > > > > > -Advanced Configuration and Power Interface (ACPI). ACPI is the newer > > > > > > -of the two technologies and puts power management in the hands of the > > > > > > -operating system, allowing for more intelligent power management than > > > > > > -is possible with BIOS controlled APM. > > > > > > - > > > > > > -The best way to determine which, if either, your system supports is to > > > > > > -build a kernel with both ACPI and APM enabled (as of 2.3.x ACPI is > > > > > > -enabled by default). If a working ACPI implementation is found, the > > > > > > -ACPI driver will override and disable APM, otherwise the APM driver > > > > > > -will be used. > > > > > > - > > > > > > -No, sorry, you cannot have both ACPI and APM enabled and running at > > > > > > -once. Some people with broken ACPI or broken APM implementations > > > > > > -would like to use both to get a full set of working features, but you > > > > > > -simply cannot mix and match the two. Only one power management > > > > > > -interface can be in control of the machine at once. Think about it.. > > > > > > > > > > I'd keep this; it is still true, and we still support both. > > > > > > > > > > Maybe it should be moved into Doc*/power/apm.txt or something. > > > > > > > > Yes, if there is a good sub-directory for it, please put it there. > > I think this is already covered in the Kconfig help for ACPI and APM > and doesn't need a Documentation file. It won't hurt to have the file, though. I have reworked the patch already and I'd rather not do that again the other way around. ;-) Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
