drm/vc4: Call drm_atomic_helper_fake_vblank() in the commit path

Mimic what is done in drm_atomic_commit_tail() and call
drm_atomic_helper_fake_vblank() so that VBLANK events are faked
when the drm_crtc_state.no_vblank is true. Will be needed when we'll
add support for the transposer block.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-8-boris.brezillon@bootlin.com

diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 91239b0..ca5aa7f 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -153,6 +153,8 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state)
 
        drm_atomic_helper_commit_modeset_enables(dev, state);
 
+       drm_atomic_helper_fake_vblank(state);
+
        drm_atomic_helper_commit_hw_done(state);
 
        drm_atomic_helper_wait_for_flip_done(dev, state);