From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Packard Subject: Re: i915_init takes a full second of kernel init time Date: Thu, 15 Dec 2011 09:48:39 -0800 Message-ID: <86sjklafpk.fsf@sumi.keithp.com> References: <20111213120252.07f4c1a3@jbarnes-desktop> <20111213140129.7ddc9724@jbarnes-desktop> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0970501680==" Return-path: Received: from keithp.com (home.keithp.com [63.227.221.253]) by gabe.freedesktop.org (Postfix) with ESMTP id 493579E80D for ; Thu, 15 Dec 2011 09:47:50 -0800 (PST) In-Reply-To: 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: Chris Wilson , Scott James Remnant Cc: intel-gfx@lists.freedesktop.org, =?utf-8?Q?St=C3=A9phane?= Marchesin , Daniel Stone List-Id: intel-gfx@lists.freedesktop.org --===============0970501680== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" --=-=-= Content-Transfer-Encoding: quoted-printable On Thu, 15 Dec 2011 10:38:16 +0000, Chris Wilson = wrote: > Reverting de842eff4101 (drm/i915: Wait for LVDS panel power sequence) > should get another 0.4s back if intel_lvds_enable() is still in the > critical path. After that the focus looks to be upon speeding up > modeset. *not* doing modeset for LVDS/eDP is the key here -- the panel is probably already running, and all we need to do is change the scaling parameters, which (on new hardware) doesn't require a full mode set. I worked with vorlon to investigate what this would take and got pretty far down the path; the big missing piece is that we have to have a valid scanout buffer for the whole setup sequence. =2D-=20 keith.packard@intel.com --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIVAwUBTuoy9zYtFsjWk68qAQjbGw//Q+GlWdBgx03EWnjSTEh3YMQ6iEUly9wi BrzIqZEgS9IMXBSP4aPuML4Zqdew/p3gY5ozMCLFC+t8q6zxizxZOLqRAsM/YV9w IH7HKoG1fwWtjH6WuAolUFq3c8r37ZdHaT6ncrho6mbW36l7i0en5XGm/LpdVjsk ah1tmOHFlMSVAv09wuQeFc2qkv5moW80UlnJAOk6oHnzgnL0E37OEllVivWyMUoz ahhBoqIo2vffFicH2XhLJH9gNcR7hIrppVZZqkJzc6vOza1rlEH7mYEdzFFjwGz8 O0BnRoJQWyZVCsG7sXtC/KZqREPA0/mwe7G/aJN6ppNd1eR4kUmNlgU80VujMKb3 /FNUmROY6nXuvfgKJHcHG4BgeiwmEiNzXLxRzdtECS8RTsBDtmgIr2+lSBwjV3TN 7zH5dHnnSNg8R2d8zK3NoJp4wV+nlNF/fJ7DbdYYdW1YIhd2t3dGn8ULfdoaunka +cXHvu271zzB4B6aI8O+n14l99dPJfHXe7pLpgtJ+W8tQ3xqgMa66YxQFVhmlDJ5 6PhLDgCEKK5OMk0eFSTK7KDO/N7Q+X8CoMY58qWQwUFFyPA8Em21VxhZDk4WHNEc 2ljtSpLAUbxWaoWmoPreD1aAMqZgaQkwCZ0Lv7/Jbk6gTWyJ/zRatFlFqRy3sCbB sdhggWXLCBo= =crWs -----END PGP SIGNATURE----- --=-=-=-- --===============0970501680== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx --===============0970501680==--