From patchwork Fri Jun 2 09:11:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 102410 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp897477vqr; Fri, 2 Jun 2023 02:25:57 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7r2GkX3vqh340/Qgsm8jKQ5mbbxvihhEZtMMYJzopketbdg/mPTIjPJBj4Wxmjo1HiS70Y X-Received: by 2002:a05:6870:5155:b0:19a:25c2:3f0a with SMTP id z21-20020a056870515500b0019a25c23f0amr1353759oak.31.1685697957075; Fri, 02 Jun 2023 02:25:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1685697957; cv=none; d=google.com; s=arc-20160816; b=MHuecT2h9s0cxdnmB1lneUQ8NSFXFSdB8jFjSbucbMt6kpwaPv3ppXJpsyF9ZtGt0Y q+0tzaYUU4f/rqK5HxCcOb3l3d9GtbokXY39fFdHwPOgUlCIqt8OfFZnmFl/B+0cKVRV w57J5a8YDj1I+xG59v6UAt9evakneAvGd2lvkM3so/32D2ftRSVx22aG+rpz7DXMG+So VjOnk+tr5YlkaKoAiC8EI2LJmaxpIB02X9WhHz7h3qdBBVIxI9nYjwBrO6LVPlQO+kBu gSmDT7sFex/380XHrxl1NDRUnp6VA6usPrcBGzMsN5qj7RwJoh0Ydn/ntNW/18hHWswD GZKg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=4rYCWHMHLbwy7OoyqYFa0Pp5uDoqhOuA/QlIh79NQR4=; b=CyjbSi8OVEjpescS033BQbdAICeH7yRYI84Wvh6hmwsQTEWpYu2OWzRuvGrElJ/gVg B1CyT0BaowZ3AUs3gB6fXQpHWQpwJbAUnH3IpDlXPWWdaitRYPBi94JrF60rUX3GFCf2 CCrjfAJT2ZfQQstJ4d53xQ1ZY6GPfKvNNVpBgpaffia3QjKNoikXfs3PZZDGTIBnQCxp TKdFZ9MlakDSMisdezasrqY67v31iyPmqjHfMnSeFOe5sDier5JLrPLvb29F+t0UEs9x czI9lv1IkOxuJmh+NT8v6d7yrrbbAGHYykrbqC2UIGf5BMumtANHRt5Fd4v5f2VfD4pA FGWA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id w4-20020a63b744000000b0051b13a071a8si690458pgt.575.2023.06.02.02.25.42; Fri, 02 Jun 2023 02:25:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234635AbjFBJNQ (ORCPT + 99 others); Fri, 2 Jun 2023 05:13:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235097AbjFBJMo (ORCPT ); Fri, 2 Jun 2023 05:12:44 -0400 Received: from andre.telenet-ops.be (andre.telenet-ops.be [IPv6:2a02:1800:120:4::f00:15]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00CAE1703 for ; Fri, 2 Jun 2023 02:11:47 -0700 (PDT) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed30:158c:2ccf:1f70:e136]) by andre.telenet-ops.be with bizsmtp id 49Bg2A0061tRZS8019BgaW; Fri, 02 Jun 2023 11:11:46 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtp (Exim 4.95) (envelope-from ) id 1q50ob-00BvaL-2W; Fri, 02 Jun 2023 11:11:40 +0200 Received: from geert by rox.of.borg with local (Exim 4.95) (envelope-from ) id 1q50ou-00ASIJ-6O; Fri, 02 Jun 2023 11:11:40 +0200 From: Geert Uytterhoeven To: David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Jonathan Corbet , Jyri Sarha , Tomi Valkeinen , Laurent Pinchart , Biju Das Cc: dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 1/3] drm/todo: Add atomic modesetting references Date: Fri, 2 Jun 2023 11:11:34 +0200 Message-Id: <7cea42cd09540657875a210cd16421125497d690.1685696114.git.geert+renesas@glider.be> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767582421337044145?= X-GMAIL-MSGID: =?utf-8?q?1767582421337044145?= The section about converting existing KMS drivers to atomic modesetting mentions the existence of a conversion guide, but does not reference it. While the guide is old and rusty, it still contains useful information, so add a link to it. Also link to the LWN.net articles that give an overview about the atomic mode setting design. Signed-off-by: Geert Uytterhoeven Reviewed-by: Javier Martinez Canillas Reviewed-by: Laurent Pinchart --- Documentation/gpu/todo.rst | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 68bdafa0284f55f6..51eb67f5268c5ec1 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -49,14 +49,19 @@ converted over. Modern compositors like Wayland or Surfaceflinger on Android really want an atomic modeset interface, so this is all about the bright future. -There is a conversion guide for atomic and all you need is a GPU for a +There is a conversion guide for atomic[1] and all you need is a GPU for a non-converted driver (again virtual HW drivers for KVM are still all -suitable). +suitable). The "Atomic mode setting design overview" series [2][3] at +LWN.net can also be helpful. As part of this drivers also need to convert to universal plane (which means exposing primary & cursor as proper plane objects). But that's much easier to do by directly using the new atomic helper driver callbacks. + - [1] https://blog.ffwll.ch/2014/11/atomic-modeset-support-for-kms-drivers.html + - [2] https://lwn.net/Articles/653071/ + - [3] https://lwn.net/Articles/653466/ + Contact: Daniel Vetter, respective driver maintainers Level: Advanced