[Intel-gfx] [PATCH] Disable frame buffer compression on ironlake

Chris Wilson chris at chris-wilson.co.uk
Fri Nov 19 09:47:27 CET 2010

On Fri, 19 Nov 2010 10:00:03 +0800, "Alex,Shi" <alex.shi at intel.com> wrote:
>  Open fbc will cause about 1 Watts power increase on ironlake
>  for bltk-office/player benchmark. So just disable it and left
>  code here to waiting for better solution.

FBC is disabled through the chicken bits, so I am really curious to know
where the power saving is coming from. I just want to verify that we have
not made a fundamental mistake in our FBC logic that is consuming more
power than is necessary across all platforms.

In terms of code clarity, we should leave a note as to why we explicitly
disable fbc, e.g.: .has_fbc = 0, /* hardware support is buggy */

Chris Wilson, Intel Open Source Technology Centre

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