On Fri, Mar 09, 2018 at 12:54:43PM -0800, Eric Anholt wrote:
> Ville Syrjala <ville.syrj...@linux.intel.com> writes:
> 
> > From: Ville Syrj??l?? <ville.syrj...@linux.intel.com>
> >
> > Only create framebuffers with supported format/modifier combinations by
> > checking that at least one plane supports the requested combination.
> >
> > Using drm_any_plane_has_format() is somewhat suboptimal for vc4 since
> > the planes have (mostly) uniform capabilities. But I was lazy and
> > didn't feel like exporting drm_plane_format_check() and hand rolling
> > anything better. Also I really just wanted to come up with another
> > user for drm_any_plane_has_format() ;)
> 
> I'm not excited about vc4 having error-return behavior that other
> drivers don't have.  Actually, I don't really see why we should be doing
> this check in fb create at all, given that you have to do so again at
> atomic_check time with the specific plane.
> 
> Could you just delete the i915 fb format check code?

Yeah I thought we agreed that any driver not using the compat primary
plane helper will get this checking by default? That seems simplest, and
safest too.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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