From 334dbd69c604cb33d906a30195010d090e6eb80c Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 21 Jun 2017 11:49:59 -0700 Subject: [PATCH] drm/vc4: Hook up plane prepare_fb to lookup dma-buf reservations. This way drm_atomic_helper_wait_for_fences() will actually do something. The vc4_seqno_cb has been doing the fence waits on V3D manually, so far. Signed-off-by: Eric Anholt Link: http://patchwork.freedesktop.org/patch/msgid/20170621185002.28563-1-eric@anholt.net Acked-by: Daniel Vetter Reviewed-by: Boris Brezillon --- drivers/gpu/drm/vc4/vc4_plane.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index fa6809d8b0fe..8853e9a4f005 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -759,9 +759,26 @@ void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb) vc4_state->dlist[vc4_state->ptr0_offset] = addr; } +static int vc4_prepare_fb(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct vc4_bo *bo; + struct dma_fence *fence; + + if ((plane->state->fb == state->fb) || !state->fb) + return 0; + + bo = to_vc4_bo(&drm_fb_cma_get_gem_obj(state->fb, 0)->base); + fence = reservation_object_get_excl_rcu(bo->resv); + drm_atomic_set_fence_for_plane(state, fence); + + return 0; +} + static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = { .atomic_check = vc4_plane_atomic_check, .atomic_update = vc4_plane_atomic_update, + .prepare_fb = vc4_prepare_fb, }; static void vc4_plane_destroy(struct drm_plane *plane) -- 2.20.1