Feature: Modifying power states using sysfs

[Andrée 'Glaucous']

Aight, that's valid (pretty much what I expected after talking on the IRC).

2012/1/23 Alex Deucher <alexdeucher at gmail.com>

> 2012/1/22 Andrée 'Glaucous' <glakke1 at gmail.com>:
> > Hello!
> >
> > It would be great to be able to modify power states during runtime,
> > especially for cards (such as mine) that have BIOS power states that are
> way
> > too high.
> > The easiest way would be to support it in sysfs, something like this:
> >
> > /sys/class/drm/card0/device:
> > --> power-states/
> > ----> states
> > ----> state0/
> > ------> modes
> > ------> clock-mode0/
> > --------> engine
> > --------> memory
> > --------> voltage
> >
> > I have a working patch that changes ALL power states at the same time
> (for
> > testing purposes, but could be extended to modify each state individually
> > like above).
> > What I'm wondering is if this is a feature you'd be interested in, or if
> > it's too user unfriendly (since you can brick/damage your card, in worst
> > cases)?
>
> I'd rather not have something like this upstream at this time as it
> makes it way too easy to program inappropriate power states on your
> card with no safe guards in place.
>
> Alex
>
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