From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Subject: Re: [PATCH 0/2] drm/i915: enable CxSR and FBC on
 Sandybridge
Date: Thu, 16 Dec 2010 18:09:46 +0800
Message-ID: <20101216100946.GB4500@yliu-dev.sh.intel.com>
References: <1292398952-11378-1-git-send-email-yuanhan.liu@linux.intel.com>
	<b9dded$hcrif5@orsmga002.jf.intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org>
Received: from mga01.intel.com (mga01.intel.com [192.55.52.88])
	by gabe.freedesktop.org (Postfix) with ESMTP id 965E69E82F
	for <intel-gfx@lists.freedesktop.org>;
	Thu, 16 Dec 2010 02:10:06 -0800 (PST)
Content-Disposition: inline
In-Reply-To: <b9dded$hcrif5@orsmga002.jf.intel.com>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=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: Chris Wilson <chris@chris-wilson.co.uk>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org

On Wed, Dec 15, 2010 at 10:32:50AM +0000, Chris Wilson wrote:
> On Wed, 15 Dec 2010 15:42:30 +0800, Yuanhan Liu <yuanhan.liu@linux.intel.com> wrote:
> > Hi, 
> > 
> > This two patches enable self refresh and frame buffer compression
> > on Sandybridge.
> > 
> > FYI, with my test, enable CxSR would save about 0.7W, while enable
> > FBC would save about 0.1~0.2W.
> 
> Do you have some numbers comparable to
> https://bugs.freedesktop.org/show_bug.cgi?id=31588 ?
> I'm interested to know if, first, we are able to reproduce those numbers
> and, 

Will update it at bugzilla soon.

> secondly, if we've started to narrow the 3W gap for enabling a pipe
> between the Windows driver and ourselves.

This two patches mostly save just about 1W;)


Thanks.
Yuanhan Liu