Render like lima will attach a fence to the framebuffer dma_buf, so the display driver should wait for it to finish before showing the framebufferto prevent tearing.
Generally tested on rk3188, rk3288, rk3328 and rk3399 and together with an actual lima-based kmscube on rk3188 and rk3328.
Suggested-by: Qiang Yu yuq825@gmail.com Signed-off-by: Heiko Stuebner heiko@sntech.de --- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index fb70fb486fbf..db8358e6d230 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -18,6 +18,7 @@ #include <drm/drm_crtc.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_flip_work.h> +#include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_plane_helper.h> #ifdef CONFIG_DRM_ANALOGIX_DP #include <drm/bridge/analogix_dp.h> @@ -823,6 +824,7 @@ static const struct drm_plane_helper_funcs plane_helper_funcs = { .atomic_check = vop_plane_atomic_check, .atomic_update = vop_plane_atomic_update, .atomic_disable = vop_plane_atomic_disable, + .prepare_fb = drm_gem_fb_prepare_fb, };
static const struct drm_plane_funcs vop_plane_funcs = {