[RFC 0/9] nuclear pageflip

[Rob Clark]

On Thu, Sep 13, 2012 at 11:35 AM, Rob Clark <rob.clark at linaro.org> wrote:
> note that the test phase doesn't need vblank events, and also
> shouldn't -EBUSY if there is still a pending flip[*], so I'd propose
> that however we go about pageflip (one super-ioctl, or one per crtc),
> we could use the atomic-modeset ioctl for the test step

actually, I think I take this back..  one thing that was discussed on
IRC, but didn't make it to this email thread is the behavior of
non-specified properties.  What I am thinking:

modeset: unspecified properties revert to default
pageflip: unspecified properties preserve current value

So I definitely do think there should be two ioctls, and that test for
pageflip should go via atomic-pageflip ioctl to be consistent w/ the
preserve-current-values approach.  Instead I'll just move the
is-there-a-pending-vblank to the top of atomic_commit() so it doesn't
get in the way if you try to test for frame n+1 while waiting for
vblank from frame n.


BR.
-R