[Intel-gfx] [PATCH 1/3] drm/i915: Fix MI_DISPLAY_FLIP plane select offset on Ivybridge.

[Chris Wilson]

On Tue, 07 Jun 2011 17:55:05 -0700, Kenneth Graunke <kenneth at whitecape.org> wrote:
> On 06/07/2011 04:14 PM, Keith Packard wrote:
> > What's this last DWORD supposed to be for? The IVB spec says length
> > should be '1' and there should be only 3 DWORDS in this command.
> 
> Good question.  My reading of the docs say that it should be 3 DWORDs on 
> SNB as well; this code was directly lifted from "case 6" above (save the 
> first line).

In my ancient copy of the specs, MI_DISPLAY_FLIP is 4 dwords, with this
last dword for programming the panel-fitter and pipesrc. And it also
says that command is applicable to IVB, but as I said it is an ancient
copy.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre