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| author | Alexander Lam <lambchop468@gmail.com> | 2011-01-03 13:28:56 -0500 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-19 12:38:48 +0000 |
| commit | 18b2190ca5bd3f19717421b1591c79c9b0372428 (patch) | |
| tree | c55fc64a0ff773a98bbbfc366b8b9600064bd5b8 /drivers/gpu/drm/i915/i915_dma.c | |
| parent | b0b544cd37c060e261afb2cf486296983fcb56da (diff) | |
| download | blackbird-op-linux-18b2190ca5bd3f19717421b1591c79c9b0372428.tar.gz blackbird-op-linux-18b2190ca5bd3f19717421b1591c79c9b0372428.zip | |
drm/i915: allow 945 to control self refresh (CxSR) automatically
I changed 945's self refresh to work without the need for the driver to
enable/disable self refresh manually based on the idle state of the gpu.
This is much better than enabling/disabling self refresh for various
reasons, including staying in a lower power state for more time and
avoiding the need for cpu cycles.
This was originally done manually to workaround issues with the hardware
hanging. However, since 944001201: drm/i915: enable low power render
writes on GEN3 hardware, automatic CxSR seems stable.
Signed-off-by: Alexander Lam <lambchop468@gmail.com>
Acked-by : Li Peng <peng.li@linux.intel.com>
[ickle: play safe with the ordering and disable CxSR before tweaking any
watermark and enable afterwards.]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
0 files changed, 0 insertions, 0 deletions
