Re: [RFC PATCH v3 2/3] drm: add support modifiers for drivers whose planes only support linear layout

[Andy Shevchenko]

On Fri, Jan 14, 2022 at 03:42:54PM +0000, Simon Ser wrote:
> On Friday, January 14th, 2022 at 16:17, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> 
> > On Fri, Jan 14, 2022 at 03:07:21PM +0000, Simon Ser wrote:
> > > On Friday, January 14th, 2022 at 15:16, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> > >
> > > > Why not enum?
> > >
> > > There is no enum for DRM format modifiers.
> >
> > I'm not sure how this prevents to use enum in the code instead of const u64.
> > Any specific reason for that?
> 
> I'm not sure how one would use an enum as the array item type, when there is no
> defined enum type.
> 
> Moreover, all the rest of DRM uses uint64 for modifiers.

Ah, I see now. This is an array that filled by predefined values.
Thanks for explanation.

-- 
With Best Regards,
Andy Shevchenko