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If the driver supports it, allow user-space to supply the DRM_MODE_PAGE_FLIP_ASYNC flag to request an async page-flip. Set drm_crtc_state.async_flip accordingly. Document that drivers will reject atomic commits if an async flip isn't possible. This allows user-space to fall back to something else. For instance, Xorg falls back to a blit. Another option is to wait as close to the next vblank as possible before performing the page-flip to reduce latency. Signed-off-by: Simon Ser <contact@emersion.fr> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Co-developed-by: André Almeida <andrealmeid@igalia.com> Signed-off-by: André Almeida <andrealmeid@igalia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231122161941.320564-3-andrealmeid@igalia.com