Re: [linux-pm] OpPoint summary

Richard A. Griffiths
2006-09-18T14:33:24Z

On Sun, 2006-09-17 at 19:48 +0200, Pavel Machek wrote:
> Hi!
>
> > >Care to resend your patches in the proper format, through email so that
> > >we can see them, and possibly get some testing in -mm if they look sane?
> >
> > Greg,
> > here's the patch that implements operating points for different
> > frequencies
> > for the speedstep-centrino line of processors. Operating points are created
> > in much the same manner that cpufreq tables are. This works for both
> > simple implementations like the centrino and more complex SoC systems
> > like the arm-pxa72x which has several clocks to control, and different clock
> > divisors and multipliers.
>
> > +static struct oppoint lowest = {
> > + .name = "lowest",
> > + .type = PM_FREQ_CHANGE,
> > + .frequency = 0,
> > + .voltage = 0,
> > + .latency = 15,
> > + .prepare_transition = cpufreq_prepare_transition,
> > + .transition = centrino_transition,
> > + .finish_transition = cpufreq_finish_transition,
> > +};
>
> We had nice, descriptive interface... with numbers. Now you want to
> introduce english state names... looks like a step back to me.

Maybe a compromise could be reached where a defined set of numbers maps
to string names ala Unix init states. Many people (at least me) still
invoke init 6 to reboot a system. A defined table would satisfy both
the number and string camps.

Richard