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drm/atomic: Allow userspace to use explicit sync with atomic async flips

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BugLink: https://bugs.launchpad.net/bugs/2083488

[ Upstream commit e0fa4132bfae725a60c50d53bac80ec31fc20d89 ]

Allow userspace to use explicit synchronization with atomic async flips.
That means that the flip will wait for some hardware fence, and then
will flip as soon as possible (async) in regard of the vblank.

Fixes: 0e26cc72c7 ("drm: Refuse to async flip with atomic prop changes")
Signed-off-by: André Almeida <andrealmeid@igalia.com>
Reviewed-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Simon Ser <contact@emersion.fr>
Link: https://patchwork.freedesktop.org/patch/msgid/20240702212215.109696-1-andrealmeid@igalia.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
André Almeida
2024-07-02 18:22:14 -03:00
committed by Mehmet Basaran
parent 47a7c0f37f
commit 15921547dd
1 changed files with 3 additions and 1 deletions
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drivers/gpu/drm/drm_atomic_uapi.c
+3 -1
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@@ -1066,7 +1066,9 @@ int drm_atomic_set_property(struct drm_atomic_state *state,
break;
}
if (async_flip && prop != config->prop_fb_id) {
if (async_flip &&
prop != config->prop_fb_id &&
prop != config->prop_in_fence_fd) {
ret = drm_atomic_plane_get_property(plane, plane_state,
prop, &old_val);
ret = drm_atomic_check_prop_changes(ret, old_val, prop_value, prop);