From patchwork Tue Sep 21 22:56:53 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jesse Barnes X-Patchwork-Id: 198192 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o8LMvVWB015870 for ; Tue, 21 Sep 2010 22:58:06 GMT Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 894D09EEA0 for ; Tue, 21 Sep 2010 15:57:30 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from cpoproxy2-pub.bluehost.com (cpoproxy2-pub.bluehost.com [67.222.39.38]) by gabe.freedesktop.org (Postfix) with SMTP id 8A22A9E7F3 for ; Tue, 21 Sep 2010 15:57:11 -0700 (PDT) Received: (qmail 3928 invoked by uid 0); 21 Sep 2010 22:57:10 -0000 Received: from unknown (HELO box514.bluehost.com) (74.220.219.114) by cpoproxy2.bluehost.com with SMTP; 21 Sep 2010 22:57:10 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=EjTf1jrzbrRdLyvsxdJ+3d6eFOH6mT7EsmAHmObvl7o1lyh3J1PLICLENW0HJ2L2EsHLxxpJRUTCS2dVqY+467pEbSCKI8pIlvza/aPnNWczrdbaAOfqyH1HND3FQhE4; Received: from c-67-174-193-198.hsd1.ca.comcast.net ([67.174.193.198] helo=jbarnes-desktop) by box514.bluehost.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.69) (envelope-from ) id 1OyBlu-0002NC-Kg; Tue, 21 Sep 2010 16:57:10 -0600 Date: Tue, 21 Sep 2010 15:56:53 -0700 From: Jesse Barnes To: Paolo Ornati Message-ID: <20100921155653.440afea4@jbarnes-desktop> In-Reply-To: <20100921202607.2b46ffca@gmail.com> References: <201009132336.17310.anarsoul@gmail.com> <201009171002.09187.simon.farnsworth@onelan.co.uk> <4b4d1e0a-b1ad-40f1-a829-6d4726d2b2d3@email.android.com> <201009171550.48480.anarsoul@gmail.com> <20100921202607.2b46ffca@gmail.com> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.18.9; x86_64-redhat-linux-gnu) Mime-Version: 1.0 X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 67.174.193.198 authed with jbarnes@virtuousgeek.org} Cc: Thomas@freedesktop.org, Venkatesh Pallipadi , intel-gfx@lists.freedesktop.org, Wheeler , linux-kernel@vger.kernel.org, Sitsofe@freedesktop.org, Gleixner Subject: Re: [Intel-gfx] Interrupt latency on some 945GM platforms X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Tue, 21 Sep 2010 22:58:06 +0000 (UTC) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_d index 40cc5da..26e1d23 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5786,6 +5786,10 @@ void intel_init_clock_gating(struct drm_device *dev) I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EX } } + + + /* Disable power management on 945GM */ + I915_WRITE(0x10f10, 0); } /* Set up chip specific display functions */