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drm/i915/perf: disable NOA logic when not used

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We already do it on Haswell and the documentation says it saves power.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170803165812.2373-5-lionel.g.landwerlin@intel.com
This commit is contained in:
Lionel Landwerlin 2017-08-03 17:58:10 +01:00
parent 3802c5cb20
commit 28964cf25e
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_perf.c
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@ -1827,6 +1827,10 @@ static void gen8_disable_metric_set(struct drm_i915_private *dev_priv)
{
/* Reset all contexts' slices/subslices configurations. */
gen8_configure_all_contexts(dev_priv, NULL, false);
I915_WRITE(GDT_CHICKEN_BITS, (I915_READ(GDT_CHICKEN_BITS) &
~GT_NOA_ENABLE));
}
static void gen7_oa_enable(struct drm_i915_private *dev_priv)