vblank should be enabled regardless of whether an event is expected back. This is especially important for a cursor plane. Signed-off-by: Sean Paul <seanpaul at chromium.org> --- Changes in v2: - Rebased on https://cgit.freedesktop.org/~seanpaul/dogwood/log/?h=for-next drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index d1e0e06..1787084 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -112,6 +112,7 @@ struct vop { struct device *dev; struct drm_device *drm_dev; bool is_enabled; + bool vblank_active; /* mutex vsync_ work */ struct mutex vsync_mutex; @@ -1107,10 +1108,11 @@ static void vop_crtc_atomic_begin(struct drm_crtc *crtc, struct vop *vop = to_vop(crtc); spin_lock_irq(&crtc->dev->event_lock); - if (crtc->state->event) { - WARN_ON(drm_crtc_vblank_get(crtc) != 0); - WARN_ON(vop->event); + vop->vblank_active = true; + WARN_ON(drm_crtc_vblank_get(crtc) != 0); + WARN_ON(vop->event); + if (crtc->state->event) { vop->event = crtc->state->event; crtc->state->event = NULL; } @@ -1197,12 +1199,14 @@ static void vop_handle_vblank(struct vop *vop) spin_lock_irqsave(&drm->event_lock, flags); if (vop->event) { - drm_crtc_send_vblank_event(crtc, vop->event); - drm_crtc_vblank_put(crtc); vop->event = NULL; } + if (vop->vblank_active) { + vop->vblank_active = false; + drm_crtc_vblank_put(crtc); + } spin_unlock_irqrestore(&drm->event_lock, flags); if (!completion_done(&vop->wait_update_complete)) @@ -1472,6 +1476,7 @@ static int vop_initial(struct vop *vop) clk_disable(vop->aclk); vop->is_enabled = false; + vop->vblank_active = false; return 0; -- 2.8.0.rc3.226.g39d4020
