From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9710FCA9EAF for ; Thu, 24 Oct 2019 13:23:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 698402084C for ; Thu, 24 Oct 2019 13:23:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2502518AbfJXNXE (ORCPT ); Thu, 24 Oct 2019 09:23:04 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:51976 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2502515AbfJXNXD (ORCPT ); Thu, 24 Oct 2019 09:23:03 -0400 Received: from localhost (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 57F7828AE4A; Thu, 24 Oct 2019 14:23:01 +0100 (BST) Date: Thu, 24 Oct 2019 15:22:57 +0200 From: Boris Brezillon To: Neil Armstrong Cc: dri-devel@lists.freedesktop.org, Lucas Stach , Chris Healy , Andrey Smirnov , Nikita Yushchenko , kernel@collabora.com, Daniel Vetter , Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Thierry Reding , Sam Ravnborg , Philipp Zabel , Rob Clark , Andrzej Hajda , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Mark Rutland , devicetree@vger.kernel.org Subject: Re: [PATCH v3 00/21] drm: Add support for bus-format negotiation Message-ID: <20191024152257.1357e313@collabora.com> In-Reply-To: References: <20191023154512.9762-1-boris.brezillon@collabora.com> Organization: Collabora X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Thu, 24 Oct 2019 13:27:16 +0200 Neil Armstrong wrote: > hi Boris, > > On 23/10/2019 17:44, Boris Brezillon wrote: > > This patch series aims at adding support for runtime bus-format > > negotiation between all elements of the > > 'encoder -> bridges -> connector/display' section of the pipeline. > > > > In order to support that, we need drm bridges to fully take part in the > > atomic state validation process, which requires adding a > > drm_bridge_state and a new drm_bridge_funcs.atomic_check() hook. > > Once those basic building blocks are in place, we can add new hooks to > > allow bus format negotiation (those are called just before > > ->atomic_check()). The bus format selection is done at runtime by > > testing all possible combinations across the whole bridge chain until > > one is reported to work. > > > > Major changes since v2: > > * Get rid of the dummy bridge embedded in drm_encoder and let encoder > > drivers provide their own bridge element > > * Clarify APIs and improve the doc > > * Propagate bus flags by default > > Seems you forgot my reviewed-bys on patches 5, 8, 11 & 13 Oops, indeed. Can you add them back?