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

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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
This commit is contained in:
André Almeida
2024-07-02 18:22:14 -03:00
committed by Simon Ser
parent 0ce91928ec
commit e0fa4132bf
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/drm_atomic_uapi.c
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@@ -1070,7 +1070,9 @@ 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);