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 27C7E10987A6 for ; Fri, 20 Mar 2026 16:27:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CF07A10EB2E; Fri, 20 Mar 2026 16:27:29 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="lqm+YStX"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9273B10EB2F; Fri, 20 Mar 2026 16:27:28 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id A979760130; Fri, 20 Mar 2026 16:27:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D21B9C4CEF7; Fri, 20 Mar 2026 16:27:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774024047; bh=tVGzG2OoAve6wdaEm6yQngdh47mMTYpnqYs26HoJiNs=; h=From:Subject:Date:To:Cc:From; b=lqm+YStX5mvlt9/t3+JcPdjEZF9aZVQbBV98Nbb4Z1n/8nd/dUIwZ5L+iuTF2Zz9v L18yH8q16XltXwTEvnjJPLgUAQ2Lvm1hqjJkCM6HE7cSLsu4RmDYA96eZUFUh+WFHQ Ku6EHuDAfr6LcLOND7f2hr33dT7PGfRiVHmvZatzstK14iDXEYFioEKZT2tyjx7Ior fUJTD6izzSi/AZy7ebw9aqjqJufLtX4ZR0a0C8Pi52o1o4Vl08v0+tFBbjGbc/eTRu gnJdmEQqm0jOyVHnvfMZB/tnHD7/GS9hQwPeUKpjriN38MgcIMT8iVtGjD6PBHMeUz RJj5P/G5C5AHQ== From: Maxime Ripard Subject: [PATCH v2 00/20] drm/atomic: Rework initial state allocation Date: Fri, 20 Mar 2026 17:27:07 +0100 Message-Id: <20260320-drm-mode-config-init-v2-0-c63f1134e76c@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/32PsW7DMAxEf8XgXBaSHFepp/xHkUG2aYdtLaWUK qQI/O+VlaVTJ+JI8N3dHSIJU4S+uYNQ5sjBF2GeGhgvzi+EPBUNRpkX1WqFk6y4holwDH7mBdl zQk167sxgD92koLxehWa+Vezb+aGFvr4LPT2WMLi4I9aVU99UJscRPd0S7lao2jLhb4oSSplOK 3WsGa7C2SXCMLyjUKSEjjQZe9DKWNfnDnbjC8cU5KfWy7o6/98kaywXsu2rHY+kx/n0QeLp8zn IAudt234BvXY1zjIBAAA= X-Change-ID: 20260310-drm-mode-config-init-1e1f52b745d0 To: Maarten Lankhorst , Thomas Zimmermann , David Airlie , Simona Vetter , Jonathan Corbet , Shuah Khan , Dmitry Baryshkov , Jyri Sarha , Tomi Valkeinen , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Simon Ser , Harry Wentland , Melissa Wen , Sebastian Wick , Alex Hung , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , Chen-Yu Tsai , Samuel Holland , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance Cc: dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Stone , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, Maxime Ripard , Laurent Pinchart , Laurent Pinchart X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4691; i=mripard@kernel.org; h=from:subject:message-id; bh=tVGzG2OoAve6wdaEm6yQngdh47mMTYpnqYs26HoJiNs=; b=owGbwMvMwCmsHn9OcpHtvjLG02pJDJl7S5PvXGyV/PqC5WJcaIH+/K4C7WX5y4odH2/+/a4qc 2Wl/Oz2jqksDMKcDLJiiixPZMJOL29fXOVgv/IHzBxWJpAhDFycAjCRmZaMdbYqLyv/yF1oPtwl of93y4yavyuXrxMSTq56Z3OwdJno2YpVIrIWqt7HTt1iVQ5vnbeRl7Hh+aWuo3IuK0rCXjJUv82 ReWqjGlvrMWfmpOMp9h015YvU+iK93hl5FPt4Fm/+dU/v9DMA X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D 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" Hi, This series started from my work on the hardware state readout[1], and more specifically a discussion with Thomas[2]. This series expands the work that has been merged recently to make drm_private_obj and drm_private_state allocation a bit more consistent and ended up creating a new atomic_create_state callback to allocate a new state with no side effect. The first patches are a documentation of the existing behaviour and some random cleanups. Then, we add the new atomic_create_state callback to every other DRM object. Next, we leverage those new callbacks to create a new helper, drm_mode_config_create_state() to create the initial state for all the objects of a driver. Finally, we hook that new helper in drm_dev_register and start converting a few drivers. This was tested on a TI SK-AM62, with the tidss driver. Let me know what you think, Maxime 1: https://lore.kernel.org/dri-devel/20250902-drm-state-readout-v1-0-14ad5315da3f@kernel.org/ 2: https://lore.kernel.org/dri-devel/5920ffe5-b6b1-484b-b320-332b9eb9db82@suse.de/ Signed-off-by: Maxime Ripard --- Changes in v2: - Change the _state_reset function names to _state_init - Change the colorop too - Various doc improvements - Link to v1: https://lore.kernel.org/r/20260310-drm-mode-config-init-v1-0-de7397c8e1cf@kernel.org --- Maxime Ripard (20): drm/colorop: Fix typos in the doc drm/atomic: Drop drm_private_state.obj assignment from create_state drm/mode-config: Mention drm_mode_config_reset() culprits drm/colorop: Rename __drm_colorop_state_reset() drm/colorop: Create drm_atomic_helper_colorop_create_state() drm/atomic-state-helper: Fix __drm_atomic_helper_plane_reset() doc typo drm/atomic-state-helper: Rename __drm_atomic_helper_plane_state_reset() drm/plane: Add new atomic_create_state callback drm/atomic-state-helper: Rename __drm_atomic_helper_crtc_state_reset() drm/crtc: Add new atomic_create_state callback drm/atomic-state-helper: Rename __drm_atomic_helper_connector_state_reset() drm/hdmi: Rename __drm_atomic_helper_connector_hdmi_reset() drm/connector: Add new atomic_create_state callback drm/mode-config: Create drm_mode_config_create_state() drm/drv: Call drm_mode_config_create_state() by default drm/atomic: Drop private obj state allocation drm/drv: Drop drm_mode_config_reset() from our skeleton drm/tidss: Drop call to drm_mode_config_reset at probe time drm/tidss: Convert to atomic_create_state drm/bridge_connector: Convert to atomic_create_state drivers/gpu/drm/display/drm_bridge_connector.c | 17 ++- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 14 +- drivers/gpu/drm/drm_atomic.c | 19 +-- drivers/gpu/drm/drm_atomic_state_helper.c | 170 ++++++++++++++++++--- drivers/gpu/drm/drm_colorop.c | 41 +++-- drivers/gpu/drm/drm_drv.c | 6 +- drivers/gpu/drm/drm_mode_config.c | 154 ++++++++++++++++++- drivers/gpu/drm/i915/display/intel_crtc.c | 2 +- drivers/gpu/drm/i915/display/intel_plane.c | 2 +- drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 2 +- drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 2 +- drivers/gpu/drm/tidss/tidss_crtc.c | 17 +-- drivers/gpu/drm/tidss/tidss_drv.c | 2 - drivers/gpu/drm/tidss/tidss_kms.c | 2 - drivers/gpu/drm/tidss/tidss_plane.c | 2 +- drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +- include/drm/display/drm_hdmi_state_helper.h | 4 +- include/drm/drm_atomic_state_helper.h | 18 ++- include/drm/drm_colorop.h | 2 + include/drm/drm_connector.h | 13 ++ include/drm/drm_crtc.h | 13 ++ include/drm/drm_mode_config.h | 1 + include/drm/drm_plane.h | 13 ++ 23 files changed, 441 insertions(+), 77 deletions(-) --- base-commit: cd5c40f745f10f082f75520ebc9deae3ea37b185 change-id: 20260310-drm-mode-config-init-1e1f52b745d0 prerequisite-change-id: 20251008-drm-private-obj-reset-ae1e2741027a:v5 prerequisite-patch-id: 9684f0ca4b16455c1340409561e8fb32f98b327a prerequisite-patch-id: e177eb92b269436a94d7ef603d44436799be7469 prerequisite-patch-id: fef6d20ab33358c1db6cd9d21aa8ec0990cae758 prerequisite-patch-id: 2dcc96d43f34d8f6237829ed29d0087c092954d1 Best regards, -- Maxime Ripard