drm/i915: Add the support of memory self-refresh on Ironlake

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Update the self-refresh watermark for display plane/cursor and enable
the memory self-refresh on Ironlake. The watermark is also updated for
the active display plane.

More than 1W idle power is saved on one Ironlake laptop after enabling
memory self-refresh.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

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Zhenyu Wang 2010-04-01 13:07:53 +08:00 • committed by Eric Anholt

parent d4294342fd

commit 7f8a85698f

2 changed files with 201 additions and 3 deletions

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44

drivers/gpu/drm/i915/i915_reg.h

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160

drivers/gpu/drm/i915/intel_display.c

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