On Thu, 2008-11-20 at 13:40 +0100, David GIGUET wrote: > > I am forwarding an e-mail from N. PAJANI, one of our collaborator. > > > Hi all > > I have made some googling and read some code from the kernel, but I > did not managed to find a "power management scheme" outside of APM or > ACPI to fit my needs. > My goal is to have something relevent for embeded devices (or at least > battery powered), not only servers, desktop or laptops, though it may > apply to these. > > For example on a cellphone, when you switch to "silent mode" what need > do you have to power the audio amplifier, and maybe the audio module > inside the SOC may be stopped, saving more power. ALSA Soc (ASoC) does this sort of thing already. It can power down unused audio components when not in use. Have a look at DAPM in sound/soc and Documentation/sound/alsa/soc for details. > Or fully powering Wifi or Ethernet when they are not in use on a > "netbook" is also an unuseful loss of power. > The voltage regulator framework will allow powerdown of Ethernet/Wifi when not in use (provided they are supplied power by a by a software controlled regulator). Liam _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
