From patchwork Tue Jun 15 14:14:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Werner Sembach X-Patchwork-Id: 12321875 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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 13BA1C48BE8 for ; Tue, 15 Jun 2021 14:14:48 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D89ED613DA for ; Tue, 15 Jun 2021 14:14:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D89ED613DA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=tuxedocomputers.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8833289DB5; Tue, 15 Jun 2021 14:14:38 +0000 (UTC) Received: from srv6.fidu.org (srv6.fidu.org [159.69.62.71]) by gabe.freedesktop.org (Postfix) with ESMTPS id 50F6F89DB5; Tue, 15 Jun 2021 14:14:37 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by srv6.fidu.org (Postfix) with ESMTP id AD27DC800A7; Tue, 15 Jun 2021 16:14:35 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at srv6.fidu.org Received: from srv6.fidu.org ([127.0.0.1]) by localhost (srv6.fidu.org [127.0.0.1]) (amavisd-new, port 10026) with LMTP id Fnry7ItCZ1uv; Tue, 15 Jun 2021 16:14:35 +0200 (CEST) Received: from wsembach-tuxedo.fritz.box (p200300e37F3949009F7CF2Abd5Da2787.dip0.t-ipconnect.de [IPv6:2003:e3:7f39:4900:9f7c:f2ab:d5da:2787]) (Authenticated sender: wse@tuxedocomputers.com) by srv6.fidu.org (Postfix) with ESMTPA id 01154C80095; Tue, 15 Jun 2021 16:14:34 +0200 (CEST) From: Werner Sembach To: harry.wentland@amd.com, sunpeng.li@amd.com, alexander.deucher@amd.com, christian.koenig@amd.com, airlied@linux.ie, daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v3 00/14] New uAPI drm properties for color management Date: Tue, 15 Jun 2021 16:14:11 +0200 Message-Id: <20210615141426.6001-1-wse@tuxedocomputers.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" I started work on my proposal for better color handling in Linux display drivers: https://lkml.org/lkml/2021/5/12/764 In this 3rd revision everything except the generalised Broadcast RGB implementation is included. I did however not yet include everything suggested in the feedback for v1 and v2. I rebased the patch series on drm-tip to have the latest changes in i915's YCbCr420 handling and to make the intel-gfx ci not fail on merge anymore. The read only properties are now correctly marked as immutable. Some questions I already have: I think Broadcast RGB is really no good name for the property as, at least in theory, YCbCr can also be "Limited" or "Full". Should the new implementation have a different name and make "Broadcast RGB" an alias for it? I propose "preferred color range" as the new name. I have not tested dp mst (both on AMD and Intel) as i have no adapter for it at hand. If one can test it, please let me know if things break or not. I found the DRM_MODE_PROP_ATOMIC flag and from the documentation it sounds like "max bpc" (and "preferred color format" and "Broadcast RGB") should have it. Is there a reason it doesn't? I have not yet looked into dsc and dithering behaviour. I have already submitted the first two patches separately to the lkml as they fix potential bugs and don't introduce new uAPI.