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Currently, DRM atomic uAPI allows only primary planes to be flipped asynchronously. However, each driver might be able to perform async flips in other different plane types. To enable drivers to set their own restrictions on which type of plane they can or cannot flip, use the existing atomic_async_check() from struct drm_plane_helper_funcs to enhance this flexibility, thus allowing different plane types to be able to do async flips as well. Create a new parameter for the atomic_async_check(), `bool flip`. This parameter is used to distinguish when this function is being called from a plane update from a full page flip. In order to prevent regressions and such, we keep the current policy: we skip the driver check for the primary plane, because it is always allowed to do async flips on it. Signed-off-by: André Almeida <andrealmeid@igalia.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Christopher Snowhill <chris@kode54.net> Tested-by: Christopher Snowhill <chris@kode54.net> Link: https://patchwork.freedesktop.org/patch/msgid/20250127-tonyk-async_flip-v12-1-0f7f8a8610d3@igalia.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>