From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: [PATCH] drm/i915: implement Disable4x2SubspanOptimization w/a for ivb, too Date: Sun, 15 Apr 2012 00:54:00 +0200 Message-ID: <1334444040-5697-1-git-send-email-daniel.vetter@ffwll.ch> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-we0-f177.google.com (mail-we0-f177.google.com [74.125.82.177]) by gabe.freedesktop.org (Postfix) with ESMTP id 362EC9EF68 for ; Sat, 14 Apr 2012 15:53:10 -0700 (PDT) Received: by werp11 with SMTP id p11so3187113wer.36 for ; Sat, 14 Apr 2012 15:53:09 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Intel Graphics Development Cc: Daniel Vetter , Ben Widawsky List-Id: intel-gfx@lists.freedesktop.org Copy&pasted from the vlv setup code. According to docs, we need that on ivb, too. Cc: Ben Widawsky Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 33aaad3..7be1d1a 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8938,6 +8938,11 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) DISPPLANE_TRICKLE_FEED_DISABLE); intel_flush_display_plane(dev_priv, pipe); } + + /* WaDisable4x2SubspanOptimization */ + I915_WRITE(CACHE_MODE_1, I915_READ(CACHE_MODE_1) | + (PIXEL_SUBSPAN_COLLECT_OPT_DISABLE << 16) | + PIXEL_SUBSPAN_COLLECT_OPT_DISABLE); } static void valleyview_init_clock_gating(struct drm_device *dev) -- 1.7.10