From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH 1/2] drm/i915: check the power well when redisabling VGA Date: Wed, 14 Aug 2013 16:51:06 +0200 Message-ID: <20130814145106.GW9296@phenom.ffwll.local> References: <1375471345-10217-1-git-send-email-przanoni@gmail.com> <20130805154612.GL22035@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ea0-f174.google.com (mail-ea0-f174.google.com [209.85.215.174]) by gabe.freedesktop.org (Postfix) with ESMTP id 73D51E67BF for ; Wed, 14 Aug 2013 07:50:59 -0700 (PDT) Received: by mail-ea0-f174.google.com with SMTP id z15so4869237ead.33 for ; Wed, 14 Aug 2013 07:50:58 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20130805154612.GL22035@phenom.ffwll.local> 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: Paulo Zanoni Cc: intel-gfx@lists.freedesktop.org, Paulo Zanoni List-Id: intel-gfx@lists.freedesktop.org On Mon, Aug 05, 2013 at 05:46:12PM +0200, Daniel Vetter wrote: > On Fri, Aug 02, 2013 at 04:22:24PM -0300, Paulo Zanoni wrote: > > From: Paulo Zanoni > > > > If the power well is disabled VGA is guaranteed to be disabled. > > > > This fixes unclaimed register messages that happen on suspend/resume. > > > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67517 > > Signed-off-by: Paulo Zanoni > > Have you seen my other comment asking whether we could just force-enable > the power well a bit earlier in the resume sequence instead? Imo that > feels a notch more robust, since we didn't sprinkle tons of power well > checks in all the other hw readout paths either. Ok, I've merged this one here (plus comments and the follow-up patch) instead of the other one. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch