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| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-09-10 15:28:06 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-09-10 19:46:07 -0700 |
| commit | 8082400327d8d2ca54254b593644942bed0edd25 (patch) | |
| tree | 43a32ac4e56e985341e2109d2c4d545d3d6df6cb /arch/x86/mm/pageattr.c | |
| parent | 06324194eee97a51b5f172270df49ec39192d6cc (diff) | |
| download | blackbird-op-linux-8082400327d8d2ca54254b593644942bed0edd25.tar.gz blackbird-op-linux-8082400327d8d2ca54254b593644942bed0edd25.zip | |
drm/i915: framebuffer compression for pre-GM45
This patch adds framebuffer compression (good for about ~0.5W power
savings in the best case) support for pre-GM45 chips. GM45+ have a new,
more flexible FBC scheme that will be added in a separate patch.
FBC can't always be enabled: the compressed buffer must be physically
contiguous and reside in stolen space. So if you have a large display
and a small amount of stolen memory, you may not be able to take
advantage of FBC. In some cases, a BIOS setting controls how much
stolen space is available. Increasing this to 8 or 16M can help.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'arch/x86/mm/pageattr.c')
0 files changed, 0 insertions, 0 deletions
