Re: [PATCH] drm/atomic: pass old crtc state to atomic_begin/flush.

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On Fri, Jun 12, 2015 at 11:18:22AM +0200, Maarten Lankhorst wrote:
> In intel it's useful to keep track of some state changes with old
> crtc state vs new state, for example to disable initial planes or
> when a modeset's prevented during fastboot.
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>

Hm, thus far the approach has been that the various ->check callbacks diff
the state and set appropriate stuff like needs_modeset or planes_changed.
And with intel_crtc->atomic we've kinda started to build up similar
things for i915. What do you plan to use this for?
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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