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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id C19B5C021B1 for ; Wed, 19 Feb 2025 13:53:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4C63C10E801; Wed, 19 Feb 2025 13:53:17 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; secure) header.d=ffwll.ch header.i=@ffwll.ch header.b="jS+qh9w5"; dkim-atps=neutral Received: from mail-wr1-f45.google.com (mail-wr1-f45.google.com [209.85.221.45]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5C2AB10E803 for ; Wed, 19 Feb 2025 13:53:16 +0000 (UTC) Received: by mail-wr1-f45.google.com with SMTP id ffacd0b85a97d-38f3913569fso554965f8f.1 for ; Wed, 19 Feb 2025 05:53:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; t=1739973195; x=1740577995; darn=lists.freedesktop.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=FyEka5hJeoXHg0os4K6Y2PLLWFiuCF9r77npcdvsS+8=; b=jS+qh9w5X+Ye5jNFASHtCHUYSw11p/biOBFy8EMYccejGvBuqKVr63q97cK3id4yCC tIYp9PWeZCoLFqyDa7SP1vme1swO11MzT0XpXDE54g+ALoXTzod6zH1B2PXwOWzKypP6 1iEbYC1+HRWNp5ooViv6Zl1nZz542OOcQfCts= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1739973195; x=1740577995; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=FyEka5hJeoXHg0os4K6Y2PLLWFiuCF9r77npcdvsS+8=; b=ly6HFstB3+wSZk6CeLIYLabjVOHLgNcTFEO+c+hmauQA+kuwA0a1F7iuxJX1akbb2y YKSDVM4f4n+UaQTkfKXpmvHH3UCTuQJ7D8aRdnJxPHQyLzKTVHYGVwEQxYFwLbWB2w67 lIPupWxOoByV+SkboyMYL0YmtqWElT/DF6Z0cOxDlXFopwx98CEIV6hEzVGZaxwcoH7t pooXrg5ko6kc0KqvwbHiWU2AOZxM4w5XE5l048X1RjZBRPeEA5sm8GyaIuxx3emN40qZ YpIGNXPl0t07HpYbZRi678+8XJifK5ShSluXId0uMi35VGHvi2mLF8QfFsTP1MU/1B/C LEug== X-Forwarded-Encrypted: i=1; AJvYcCVZvWY6RWqppkj8cF7YeaUggm0DK/5/m1f1ChjzNDlm2MfghRZLq3dKSptHrpwwlXC3TqIY0wUiqsI=@lists.freedesktop.org X-Gm-Message-State: AOJu0YzjaF5V99RnYNF9UZC+l7U4Q6wQsJ8ADVytSguwFWtFM+xiTQjt XrU3DHWteZSpUbN8MTiN2g/mlcTDSCxiOUJCEO03FJhce/dvooT/NLt82dr93IQ= X-Gm-Gg: ASbGnctfB4vGHFhweUu4c9GwY//9kVT7kt2/0z9TNbHogZX/cknFISxqpV2tM+NUL6J H3KzSAGm86Xiq15bvti7aX1GlTArScgBssmhLDsxEnfmePWNmaGLzMT+uFyo7wnlOoxxzTVfRzk /wGFe/NWRq3KJ8aWyFaAul5zdP4EQJ0snHiQw648nY5SqX/TdkK5rfEfr0kbN55OMqF4bb8794c imDyhZOi+L89Dc+txgU1+xTIISXUwCKmHlJNhBl6gecCLw6ejmPuk4Ahoh7J540R/OnBqaFafkm vJ36RdlZ5aDurcbamNAA3kwSZrI= X-Google-Smtp-Source: AGHT+IHhxL7NdXguAsHBVaP1UvYcb8rpQV9UAn0iPu3pZhbjhRGsonzEzPwRA956d+9JVoraHQ0pbA== X-Received: by 2002:a5d:47c6:0:b0:38b:d807:f3be with SMTP id ffacd0b85a97d-38f57bd9182mr3175939f8f.3.1739973194736; Wed, 19 Feb 2025 05:53:14 -0800 (PST) Received: from phenom.ffwll.local ([2a02:168:57f4:0:5485:d4b2:c087:b497]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38f259d5923sm18084914f8f.74.2025.02.19.05.53.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Feb 2025 05:53:14 -0800 (PST) Date: Wed, 19 Feb 2025 14:53:12 +0100 From: Simona Vetter To: Arun R Murthy Cc: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, chaitanya.kumar.borah@intel.com, Naveen Kumar , Sebastian Brzezinka Subject: Re: [PATCH v6 0/3] Expose modifiers/formats supported by async flips Message-ID: References: <20250219-asyn-v6-0-b959e6becb3c@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250219-asyn-v6-0-b959e6becb3c@intel.com> X-Operating-System: Linux phenom 6.12.11-amd64 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Wed, Feb 19, 2025 at 02:47:22PM +0530, Arun R Murthy wrote: > All of the formats/modifiers supported by the plane during synchronous > flips are nor supported by asynchronous flips. The formats/modifiers > exposed to user by IN_FORMATS exposes all formats/modifiers supported by > plane and this list varies for async flips. If the async flip supported > formats/modifiers are exposed to the user, user based on this list can > take decision to proceed or not and avoid flip failures during async > flips. > Discussion around this can be located @ > https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29618#note_2487123 > Userspace implementation for IN_FORMARTS_ASYNC under review @ > https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4063 > > TODO: Upon merge of the patch related to async flip > https://patchwork.freedesktop.org/patch/626849/?series=139807&rev=6 > the patch 5 in this series will have to make use of the new function > pointer can_async_flip(). > > v3: Add new plane->funcs format_mod_supported_async (Ville) > > Arun R Murthy (3): > drm/plane: Add new plane property IN_FORMATS_ASYNC > drm/plane: Expose function to create format/modifier blob > drm/i915/display: Populate list of async supported formats/modifiers Somewhat orthogonal, but in a different atomic kms discussion the much bigger question of what are compositors supposed to figure out with TEST_ONLY and what are they supposed to figure out through special properties cropped up. Might be really good to document that, so that we can have some design consistency here. I think this patch series should also document why we need this and compositors can't figure this out on their own, ideally by linking/quoting the relevant discussions in the compositor enabling PR. Thanks, Sima > > drivers/gpu/drm/drm_mode_config.c | 7 +++ > drivers/gpu/drm/drm_plane.c | 50 ++++++++++++------ > .../drm/i915/display/skl_universal_plane.c | 51 +++++++++++++++++++ > include/drm/drm_mode_config.h | 6 +++ > include/drm/drm_plane.h | 4 ++ > 5 files changed, 103 insertions(+), 15 deletions(-) > > -- > 2.25.1 > > --- > Arun R Murthy (5): > drm/plane: Add new plane property IN_FORMATS_ASYNC > drm/plane: Expose function to create format/modifier blob > drm/plane: Function to check async supported modifier/format > drm/i915/display: Populate list of async supported formats/modifiers > drm/i915/display: Add function for format_mod_supported_async > > drivers/gpu/drm/drm_mode_config.c | 7 ++ > drivers/gpu/drm/drm_plane.c | 72 +++++++++---- > drivers/gpu/drm/i915/display/skl_universal_plane.c | 113 ++++++++++++++++++--- > include/drm/drm_mode_config.h | 6 ++ > include/drm/drm_plane.h | 24 +++++ > 5 files changed, 188 insertions(+), 34 deletions(-) > --- > base-commit: 08bd590935a5258ffd79355c59adffd72fb2c642 > change-id: 20250102-asyn-bf76730501cc > > Best regards, > -- > Arun R Murthy > > --- > Changes in v6: > - EDITME: describe what is new in this series revision. > - EDITME: use bulletpoints and terse descriptions. > - Link to v5: https://lore.kernel.org/r/20250218-asyn-v5-0-7ac5ac4abd4a@intel.com > > --- > Arun R Murthy (3): > drm/plane: Add new plane property IN_FORMATS_ASYNC > drm/plane: modify create_in_formats to accommodate async > drm/i915/display: Add i915 hook for format_mod_supported_async > > drivers/gpu/drm/drm_mode_config.c | 7 +++ > drivers/gpu/drm/drm_plane.c | 53 +++++++++++++++----- > drivers/gpu/drm/i915/display/skl_universal_plane.c | 56 ++++++++++++++++------ > include/drm/drm_mode_config.h | 6 +++ > include/drm/drm_plane.h | 17 +++++++ > 5 files changed, 112 insertions(+), 27 deletions(-) > --- > base-commit: bc7a84cbc968ce97e581e9e3c2d26fb0ac106482 > change-id: 20250102-asyn-bf76730501cc > > Best regards, > -- > Arun R Murthy > -- Simona Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch