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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 652C2C433E0 for ; Mon, 29 Mar 2021 16:16:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 34B1C61981 for ; Mon, 29 Mar 2021 16:16:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229630AbhC2QP6 convert rfc822-to-8bit (ORCPT ); Mon, 29 Mar 2021 12:15:58 -0400 Received: from aposti.net ([89.234.176.197]:40632 "EHLO aposti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229515AbhC2QPe (ORCPT ); Mon, 29 Mar 2021 12:15:34 -0400 Date: Mon, 29 Mar 2021 17:15:06 +0100 From: Paul Cercueil Subject: Re: [PATCH] drm: DON'T require each CRTC to have a unique primary plane To: Simon Ser Cc: Maxime Ripard , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , od@zcrc.me, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Message-Id: <6TNQQQ.CQL1KN8NARCK@crapouillou.net> In-Reply-To: References: <20210327112214.10252-1-paul@crapouillou.net> <20210329140731.tvkfxic4fu47v3rz@gilmour> <20210329153541.a3yil2aqsrtf2nlj@gilmour> <25MQQQ.YYKN0GE2YPZN1@crapouillou.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le lun. 29 mars 2021 à 15:42, Simon Ser a écrit : > On Monday, March 29th, 2021 at 5:39 PM, Paul Cercueil > wrote: > >> Ok, I read that as "all drivers should provide AT LEAST one primary >> plane per CRTC", and not as "all drivers should provide ONE AND ONLY >> ONE primary plane per CRTC". My bad. > > Yeah, it's a little complicated to document, because it's possible for > a primary plane to be compatible with multiple CRTCs… We tried to > improve this [1] recently. > > [1]: > https://dri.freedesktop.org/docs/drm/gpu/drm-kms.html#plane-abstraction Ok, that is definitely much clearer :) -Paul