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| author | Alexander Lam | 2011-01-03 19:28:56 +0100 |
|---|---|---|
| committer | Chris Wilson | 2011-01-19 13:38:48 +0100 |
| commit | 18b2190ca5bd3f19717421b1591c79c9b0372428 (patch) | |
| tree | c55fc64a0ff773a98bbbfc366b8b9600064bd5b8 /drivers/gpu/drm/i915/intel_lvds.c | |
| parent | drm/i915: Use PM QoS to prevent C-State starvation of gen3 GPU (diff) | |
| download | kernel-qcow2-linux-18b2190ca5bd3f19717421b1591c79c9b0372428.tar.gz kernel-qcow2-linux-18b2190ca5bd3f19717421b1591c79c9b0372428.tar.xz kernel-qcow2-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/intel_lvds.c')
0 files changed, 0 insertions, 0 deletions