spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 }
 
+static int hibmc_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+       struct hibmc_drm_private *priv = crtc->dev->dev_private;
+
+       writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(1),
+              priv->mmio + HIBMC_RAW_INTERRUPT_EN);
+
+       return 0;
+}
+
+static void hibmc_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+       struct hibmc_drm_private *priv = crtc->dev->dev_private;
+
+       writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(0),
+              priv->mmio + HIBMC_RAW_INTERRUPT_EN);
+}
+
 static const struct drm_crtc_funcs hibmc_crtc_funcs = {
        .page_flip = drm_atomic_helper_page_flip,
        .set_config = drm_atomic_helper_set_config,
        .reset = drm_atomic_helper_crtc_reset,
        .atomic_duplicate_state =  drm_atomic_helper_crtc_duplicate_state,
        .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+       .enable_vblank = hibmc_crtc_enable_vblank,
+       .disable_vblank = hibmc_crtc_disable_vblank,
 };
 
 static const struct drm_crtc_helper_funcs hibmc_crtc_helper_funcs = {
 
        .llseek         = no_llseek,
 };
 
-static int hibmc_enable_vblank(struct drm_device *dev, unsigned int pipe)
-{
-       struct hibmc_drm_private *priv =
-               (struct hibmc_drm_private *)dev->dev_private;
-
-       writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(1),
-              priv->mmio + HIBMC_RAW_INTERRUPT_EN);
-
-       return 0;
-}
-
-static void hibmc_disable_vblank(struct drm_device *dev, unsigned int pipe)
-{
-       struct hibmc_drm_private *priv =
-               (struct hibmc_drm_private *)dev->dev_private;
-
-       writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(0),
-              priv->mmio + HIBMC_RAW_INTERRUPT_EN);
-}
-
 irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
 {
        struct drm_device *dev = (struct drm_device *)arg;
        .desc                   = "hibmc drm driver",
        .major                  = 1,
        .minor                  = 0,
-       .enable_vblank          = hibmc_enable_vblank,
-       .disable_vblank         = hibmc_disable_vblank,
        .gem_free_object_unlocked = hibmc_gem_free_object,
        .dumb_create            = hibmc_dumb_create,
        .dumb_map_offset        = hibmc_dumb_mmap_offset,