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drm/i915: Don't try to calculate RC6 residency on GEN4 and before

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intel_enable_rc6() is used to check if we can compute the RC6 residency
in the sysfs code. Disable this for platforms older than Ironlake.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2013-06-07 17:41:14 +01:00 committed by Daniel Vetter
parent 19bc678a60
commit eb4926e4a6
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/intel_pm.c
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@ -3167,6 +3167,10 @@ static void valleyview_disable_rps(struct drm_device *dev)
int intel_enable_rc6(const struct drm_device *dev)
{
/* No RC6 before Ironlake */
if (INTEL_INFO(dev)->gen < 5)
return 0;
/* Respect the kernel parameter if it is set */
if (i915_enable_rc6 >= 0)
return i915_enable_rc6;