Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [RFD] Automatic suspend | Date | Tue, 17 Feb 2009 00:28:55 +0100 |
| |
On Monday 16 February 2009, Arjan van de Ven wrote: > On Mon, 16 Feb 2009 17:40:10 -0500 (EST) > Alan Stern <stern@rowland.harvard.edu> wrote: > > > On Mon, 16 Feb 2009, Rafael J. Wysocki wrote: > > > > > OK, so I think there are two things that user space may be allowed > > > to do as far as putting devices into low power states is concerned: > > > * disable/enable the automatic power management of the device > > > (provided that the driver supports the automatic PM) > > > > Set the automatic PM parameters (idle timeout, state to go to, > > etc.). And disabling automatic PM altogether (effectively the same as > > setting the idle timeout to infinity). > > > > shouldn't idle timeout etc be internal to the driver? > Yes policy preferences / constraints makes sense to communicate, > actual settings do not. For one they keep changing fast all the time > anyway.
Usually different devices are handled by the same driver. I don't really think the same value will be suitable for all of them, so the users should at least be able to override the driver default, IMO.
Thanks, Rafael
| |