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From: Ben Widawsky <ben@bwidawsk.net>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm/i915: set persistent mode for fbc
Date: Fri,  1 Jul 2011 12:48:43 -0700	[thread overview]
Message-ID: <1309549723-13144-1-git-send-email-ben@bwidawsk.net> (raw)

This seems to fix my bugs with sna enabled.

We should collect some power numbers, and validate it works on ILK
before upstreaming. (And read more about what it actually does).

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 drivers/gpu/drm/i915/intel_display.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 804ac4d..4b94d71 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1607,6 +1607,8 @@ static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
 		I915_WRITE(SNB_DPFC_CTL_SA,
 			   SNB_CPU_FENCE_ENABLE | dev_priv->cfb_fence);
 		I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
+		/* Set persistent mode */
+		I915_WRITE(ILK_DPFC_CONTROL, 1 << 25);
 		sandybridge_blit_fbc_update(dev);
 	}
 
-- 
1.7.6

             reply	other threads:[~2011-07-01 19:49 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-01 19:48 Ben Widawsky [this message]
2011-07-02  7:16 ` [PATCH] drm/i915: set persistent mode for fbc Chris Wilson
2011-07-03 11:01 ` Chris Wilson
2011-07-03 15:32   ` Ben Widawsky
2011-07-04 12:35     ` [PATCH] drm/i915: Set persistent-mode for SNB framebuffer compression Chris Wilson
2011-07-04 18:18       ` Chris Wilson
2011-07-04 21:22         ` Ben Widawsky
2011-07-04 18:23       ` Keith Packard

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