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SubjectRe: [PATCH v5] Introduce support for Systems Management Driver over WMI for Dell Systems
On Thu, Oct 01, 2020 at 11:26:36AM +0200, Hans de Goede wrote:
> Hi,
>
> On 9/30/20 11:02 PM, Limonciello, Mario wrote:
> > > > + possible_values: A file that can be read to obtain the possible
> > > > + values of the <attr>. Values are separated using
> > > > + semi-colon (``;``).
> > > why not use set notation from math classes assuming intergers? i.e.
> > > (a, b) all integers beween a and b but not including a or b (open set)
> > > or
> > > [a, b] all integerger betwen a and b including and b? (closed set)
> > >
> > > Anyway its ambiguous if the the extremes are included in the set of possible
> > > values as written.
> > >
> >
> > Enumeration attributes mean that there are fixed values, specifically not integers.
> > Integers are in the "integer" type and explained below.
> >
> > An example value that would be seen here is possible_values:
> >
> > Enabled;Disabled;
>
> That might not be the best example, because in that case arguably we
> could export it as a boolean type (except that the WMI interface does
> not give us boolean as an explicit / separate type).
>
> Mark these enum attributes are really like enums in C, so we
> have a fixed set of possible values which are described by
> strings, since using integers for it makes no sense from a human
> interaction pov. E.g. on the Lenovo X1C8 I have some attributes
> have the following possible value sets:
>
> Package (0x03)
> {
> "High",
> "Normal",
> "Silent"
> },
>
> Package (0x02)
> {
> "LCD",
> "ExternalDisplay"
> },
>
> Package (0x02)
> {
> "Independent",
> "Synchronized"
> },
>
> I hope this helps clarify things.
It does. Please ignore my comment on this topic then.

thanks

--mark

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