[PATCH v3 7/9] drm/vc4: Call drm_atomic_helper_fake_vblank() in the commit path

[Boris Brezillon]

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 at bootlin.com>
Reviewed-by: Eric Anholt <eric at anholt.net>
---
Changes in v3:
- Add Eric's R-b

Changes in v2:
- New patch
---
 drivers/gpu/drm/vc4/vc4_kms.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 91239b0a4fa0..ca5aa7fba769 100644
--- 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);
-- 
2.14.1