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From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: intel-gfx@lists.freedesktop.org
Cc: stable@kernel.org
Subject: [PATCH] drm/i915: disable RC6+ on Sandy Bridge
Date: Wed,  6 Apr 2011 09:07:10 -0700	[thread overview]
Message-ID: <1302106030-10268-1-git-send-email-jbarnes@virtuousgeek.org> (raw)

RC6+ can cause trouble, so keep it disabled (this costs us a little
power, around 20mW I think, but better safe than sorry).

Cc: stable@kernel.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
 drivers/gpu/drm/i915/intel_display.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 432fc04..b265bd3 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6874,7 +6874,6 @@ void gen6_enable_rps(struct drm_i915_private *dev_priv)
 	I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
 
 	I915_WRITE(GEN6_RC_CONTROL,
-		   GEN6_RC_CTL_RC6p_ENABLE |
 		   GEN6_RC_CTL_RC6_ENABLE |
 		   GEN6_RC_CTL_EI_MODE(1) |
 		   GEN6_RC_CTL_HW_ENABLE);
-- 
1.7.1

             reply	other threads:[~2011-04-06 16:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-06 16:07 Jesse Barnes [this message]
2011-04-06 18:46 ` [PATCH] drm/i915: disable RC6+ on Sandy Bridge Chris Wilson

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