drm/i915: Read wm values from hardware at init on CHV

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Read out the current watermark settings from the hardware at driver init
time. This will allow us to compare the newly calculated values against
the currrent ones and potentially avoid needless WM updates.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2015-06-24 22:00:03 +03:00 • committed by Daniel Vetter

parent f015c55188

commit 6eb1a68172

4 changed files with 148 additions and 1 deletions

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2

drivers/gpu/drm/i915/i915_drv.h

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4

drivers/gpu/drm/i915/intel_display.c

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2

drivers/gpu/drm/i915/intel_drv.h

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141

drivers/gpu/drm/i915/intel_pm.c

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