From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756015Ab1ISGxe (ORCPT ); Mon, 19 Sep 2011 02:53:34 -0400 Received: from home.keithp.com ([63.227.221.253]:40675 "EHLO keithp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751931Ab1ISGxb (ORCPT ); Mon, 19 Sep 2011 02:53:31 -0400 From: Keith Packard To: Tomi Valkeinen , Alan Cox Cc: linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-dev@lists.linaro.org, "Clark\, Rob" , Archit Taneja Subject: Re: Proposal for a low-level Linux display framework In-Reply-To: <1316414014.1978.12.camel@deskari> References: <1316088425.11294.78.camel@lappyti> <1316100594.23214.65.camel@deskari> <1316107275.23214.99.camel@deskari> <20110916175326.54567b14@lxorguk.ukuu.org.uk> <1316414014.1978.12.camel@deskari> User-Agent: Notmuch/0.6.1-66-ga900dda (http://notmuchmail.org) Emacs/23.3.1 (i486-pc-linux-gnu) Date: Sun, 18 Sep 2011 23:53:27 -0700 Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha1; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-=-= Content-Transfer-Encoding: quoted-printable On Mon, 19 Sep 2011 09:33:34 +0300, Tomi Valkeinen = wrote: > I think it's a bit more complex than that. True, there are MIPI > standards, for the video there are DPI, DBI, DSI, and for the commands > there is DCS. And, as you mentioned, many panels need custom > initialization, or support only parts of the DCS, or have other > quirks. So DSI is more like i2c than the DisplayPort aux channel or DDC. That seems fine; you can create a DSI infrastructure like the i2c infrastructure and then just have your display drivers use it to talk to the panel. We might eventually end up with some shared DRM code to deal with common DSI functions for display devices, like the EDID code today, but that doesn't need to happen before you can write your first DSI-using display driver. =2D-=20 keith.packard@intel.com --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iD8DBQFOdubnQp8BWwlsTdMRAusOAKCegZhdtYGIUQrd8gu69/RZ474TigCdFfyS YiohI3JOdnyz+UzbK0fRb7A= =wU+N -----END PGP SIGNATURE----- --=-=-=--