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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 0FC4EC48BC2 for ; Fri, 4 Jun 2021 17:17:43 +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 B6A21613FF for ; Fri, 4 Jun 2021 17:17:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B6A21613FF 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 D29DA6F635; Fri, 4 Jun 2021 17:17:38 +0000 (UTC) Received: from srv6.fidu.org (srv6.fidu.org [159.69.62.71]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5BE986F630; Fri, 4 Jun 2021 17:17:37 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by srv6.fidu.org (Postfix) with ESMTP id 8CC95C800C8; Fri, 4 Jun 2021 19:17:35 +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 Ms01pTyamUKB; Fri, 4 Jun 2021 19:17:35 +0200 (CEST) Received: from wsembach-tuxedo.fritz.box (p200300E37f2e2a0038b625C68b541A92.dip0.t-ipconnect.de [IPv6:2003:e3:7f2e:2a00:38b6:25c6:8b54:1a92]) (Authenticated sender: wse@tuxedocomputers.com) by srv6.fidu.org (Postfix) with ESMTPA id ABC54C800C5; Fri, 4 Jun 2021 19:17:34 +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 0/4] Add "activ bpc" drm property and use it in AMD and Intel driver Date: Fri, 4 Jun 2021 19:17:19 +0200 Message-Id: <20210604171723.10276-1-wse@tuxedocomputers.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Since the first read-only property is now implemented for amdgpu and i915 I wanted to collect some feedback, since the other two read-only properties will be quite similar, I hope. I have already commited the first patch in this series independently as it fixes a function already in use. The actuall update of the values is implemented in patch three and four in the atomic_commit_tail() function of amdgpu and i915 respectifly. It does get updated more often than needed with the current approach, but without harm since just the same value is written again. A check if the update is required would be the same amount of computation. Let me know if you know a better place to put the update than attomic_commit_tail().