linux-kernel - [PATCH v10 0/2] drm/atomic: Ease async flip restrictions

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Message-Id: <20241211-tonyk-async_flip-v10-0-6b1ff04847c2@igalia.com>
Date: Wed, 11 Dec 2024 00:25:07 -0300
From: André Almeida <andrealmeid@...lia.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Harry Wentland <harry.wentland@....com>, Leo Li <sunpeng.li@....com>, 
 Rodrigo Siqueira <Rodrigo.Siqueira@....com>, 
 Alex Deucher <alexander.deucher@....com>, 
 Christian König <christian.koenig@....com>, 
 Xinhui Pan <Xinhui.Pan@....com>, dmitry.baryshkov@...aro.org, 
 Simon Ser <contact@...rsion.fr>, joshua@...ggi.es, 
 Xaver Hugl <xaver.hugl@...il.com>, Daniel Stone <daniel@...ishbar.org>, 
 ville.syrjala@...ux.intel.com
Cc: kernel-dev@...lia.com, dri-devel@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org, 
 André Almeida <andrealmeid@...lia.com>
Subject: [PATCH v10 0/2] drm/atomic: Ease async flip restrictions

Hi,

The goal of this work is to find a nice way to allow amdgpu to perform
async page flips in the overlay plane as well, not only on the primary
one. Currently, when using the atomic uAPI, this is the only type of
plane allowed to do async flips, and every driver accepts it.

This patchset re-uses the per-plane function atomic_async_check() to
this purpose, so drivers can allow different plane types. There's a
`bool flip` parameter so the atomic_async_check() can do different
decisions if it's a complete page flip or a plane update.

igt test: https://lore.kernel.org/igt-dev/20241211031820.115844-1-andrealmeid@igalia.com/

Changelog
 v9: https://lore.kernel.org/r/20241101-tonyk-async_flip-v9-0-681814efbfbe@igalia.com
 - Add a 'flip' flag to indicate where the atomic_async_check() is being called from.

 v8: https://lore.kernel.org/lkml/20240806135300.114469-1-andrealmeid@igalia.com/
 - Rebased on top of 6.12-rc1 (drm/drm-next)

 v7: https://lore.kernel.org/dri-devel/20240618030024.500532-1-andrealmeid@igalia.com/
 - Complete rewrite

---
André Almeida (2):
      drm/atomic: Let drivers decide which planes to async flip
      drm/amdgpu: Enable async flip on overlay planes

 .../drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c    | 11 ++++---
 drivers/gpu/drm/drm_atomic_helper.c                |  2 +-
 drivers/gpu/drm/drm_atomic_uapi.c                  | 37 ++++++++++++++++------
 drivers/gpu/drm/loongson/lsdc_plane.c              |  3 +-
 drivers/gpu/drm/mediatek/mtk_plane.c               |  2 +-
 drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c         |  2 +-
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c        |  2 +-
 drivers/gpu/drm/tegra/dc.c                         |  3 +-
 drivers/gpu/drm/vc4/vc4_plane.c                    |  2 +-
 include/drm/drm_modeset_helper_vtables.h           |  7 +++-
 10 files changed, 49 insertions(+), 22 deletions(-)
---
base-commit: c40c32cf71b90d85386fcc066c19feb23eb42804
change-id: 20241002-tonyk-async_flip-828cfe9cf3ca

Best regards,
-- 
André Almeida <andrealmeid@...lia.com>