Re: [PATCH] Introduce support for Systems Management Driver over WMI for Dell Systems

[Hans de Goede]

Hi,

On 9/14/20 10:45 AM, Hans de Goede wrote:

<snip>

> > > > +           lower_bound:    A file that can be read to obtain the lower
> > > > +           bound value of the <attr>
> > > > +
> > > > +           modifier:       A file that can be read to obtain attribute-level
> > > > +           dependency rule which has to be met to configure <attr>
> > > > +
> > > > +           scalar_increment:       A file that can be read to obtain the
> > > > +           resolution of the incremental value this attribute accepts.
> > > > +
> > > > +           upper_bound:    A file that can be read to obtain the upper
> > > > +           bound value of the <attr>
> > >
> > > Are these integers or also possibly floats? I guess possibly also floats, right?
> > > Then at a minimum this should specify which decimal-separator is used (I assume
> > > we will go with the usual '.' as decimal separator).
> >
> > In practice they're integers, but I don't see why they couldn't be floats.
>
> Hmm, that is a bit hand-wavy, for an userspace ABI we really need to define
> this clearly. Either it is integers (which is fine), or it is floats and we need
> to define a decimal-separator as part of the ABI.
>
> Note the reason why I started wondering about this in the first place is the
> scalar_increment attribute. I think that can use some clarification too.

p.s.

I just realized that the lower_ / upper_bound attributes would be
better if they were renamed to min_value and max_value then everyone
will immediately understand what they are without even needing to
consult the docs.

Regards,

Hans