From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Cox Subject: Re: [PATCH 2/5] drm: Add initial dnyamic power off feature Date: Mon, 10 Sep 2012 12:07:58 +0100 Message-ID: <20120910120758.3bd752bc@pyramind.ukuu.org.uk> References: <1347251515-10136-1-git-send-email-airlied@gmail.com> <1347251515-10136-3-git-send-email-airlied@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from lxorguk.ukuu.org.uk (lxorguk.ukuu.org.uk [81.2.110.251]) by gabe.freedesktop.org (Postfix) with ESMTP id 94B669F07C for ; Mon, 10 Sep 2012 04:03:08 -0700 (PDT) In-Reply-To: <1347251515-10136-3-git-send-email-airlied@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Dave Airlie Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On Mon, 10 Sep 2012 14:31:52 +1000 Dave Airlie wrote: > From: Dave Airlie > > For secondary GPUs in laptops, i.e. optimus or powerxpress, we have > methods for powering down the GPU completely. This adds support > to the drm core for powering back up the GPU on any access from > ioctls or sysfs interfaces, and fires a 5s timer to test if > we can power the GPU off. Is there a reason for basically re-inventing the existing Linux dynamic power management layer ? Alan