[Intel-gfx] [PATCH i-g-t] tests/kms_plane_lowres: Add DRM_MODE_ATOMIC_ALLOW_MODESET test

[Mika Kahola]

On Wed, 2017-03-08 at 13:38 +0100, Maarten Lankhorst wrote:
> Hey,
> 
> Op 07-02-17 om 14:33 schreef Mika Kahola:
> > 
> > When doing a full atomic modeset, kernel should fail if the flag
> > DRM_MODE_ATOMIC_ALLOW_MODESET is not set. Let's add this test as
> > part of
> > 'kms_plane_lowres' testset. The testcases are 'pipe-x-allow-
> > modeset' where
> > x stands for pipe in question.
> > 
> > For: VIZ-6955
> I think it makes sense for this to be a standalone test,
> kms_atomic_allow_modeset.
> igt_display
> 
> It should be trying the following:
> 
> 0. Add a way to control the active property to lib/igt_kms.c either
> auto (backwards compatible), off or on.
> 1. Toggling the active property only, with and without mode set.
> (Testing active_changed vs modeset flag)
> 2. With the active property set to disabled (dpms off), try to set
> and unset the mode. (Testing mode_changed vs modeset flag)
> 3. Try swapping connectors on a crtc. (Testing connectors_changed vs
> modeset flag)
> 
> With and without TEST_ONLY. :)

Thanks Maarten for review. I guess it's back to the drawing board then
:)

I could change the test as a standalone one that tests
DRM_MODE_ATOMIC_ALLOW_MODESET flag with dpms on/off.

> 
> I think that makes more sense than changing a unrelated test.
> 
> Cheers,
> ~Maarten
-- 
Mika Kahola - Intel OTC