drm/vblank: use the drm_vblank_crtc() and drm_crtc_vblank_crtc() helpers more

We have the helpers to avoid open coding dev->vblank[pipe] access.

v2: Rebase

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/ad41f25c625d6a263b7e2e1d227cb14c5d0ce204.1765290097.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Author: jnikula

drivers/gpu/drm/drm_vblank.c

@@ -551,7 +551,7 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs)
 	dev->num_crtcs = num_crtcs;
 
 	for (i = 0; i < num_crtcs; i++) {
-		struct drm_vblank_crtc *vblank = &dev->vblank[i];
+		struct drm_vblank_crtc *vblank = drm_vblank_crtc(dev, i);
 
 		vblank->dev = dev;
 		vblank->pipe = i;
@@ -605,7 +605,9 @@ EXPORT_SYMBOL(drm_dev_has_vblank);
  */
 wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc)
 {
-	return &crtc->dev->vblank[drm_crtc_index(crtc)].queue;
+	struct drm_vblank_crtc *vblank = drm_crtc_vblank_crtc(crtc);
+
+	return &vblank->queue;
 }
 EXPORT_SYMBOL(drm_crtc_vblank_waitqueue);
 
@@ -729,7 +731,7 @@ drm_crtc_vblank_helper_get_vblank_timestamp_internal(
 	}
 
 	if (drm_drv_uses_atomic_modeset(dev)) {
-		struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
+		struct drm_vblank_crtc *vblank = drm_vblank_crtc(dev, pipe);
 
 		mode = &vblank->hwmode;
 	} else {
@@ -1784,7 +1786,7 @@ int drm_wait_vblank_ioctl(struct drm_device *dev, void *data,
 	if (pipe >= dev->num_crtcs)
 		return -EINVAL;
 
-	vblank = &dev->vblank[pipe];
+	vblank = drm_vblank_crtc(dev, pipe);
 
 	/* If the counter is currently enabled and accurate, short-circuit
 	 * queries to return the cached timestamp of the last vblank.