drm/msm/mdp5: drop attached planes table

Simplify things a bit for atomic, gets rid of some bookkeeping, and
makes the code cleaner.
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c

@@ -25,7 +25,6 @@
 struct mdp5_crtc {
 	struct drm_crtc base;
 	char name[8];
-	struct drm_plane *planes[8];
 	int id;
 	bool enabled;
 
@@ -77,15 +76,14 @@ static void crtc_flush(struct drm_crtc *crtc)
 	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
 	struct mdp5_kms *mdp5_kms = get_kms(crtc);
 	int id = mdp5_crtc->id;
-	uint32_t i, flush = 0;
+	struct drm_plane *plane;
+	uint32_t flush = 0;
 
-	for (i = 0; i < ARRAY_SIZE(mdp5_crtc->planes); i++) {
-		struct drm_plane *plane = mdp5_crtc->planes[i];
-		if (plane) {
+	for_each_plane_on_crtc(crtc, plane) {
 		enum mdp5_pipe pipe = mdp5_plane_pipe(plane);
 		flush |= pipe2flush(pipe);
 	}
-	}
+
 	flush |= mixer2flush(mdp5_crtc->id);
 	flush |= MDP5_CTL_FLUSH_CTL;
 
@@ -141,7 +139,8 @@ static void complete_flip(struct drm_crtc *crtc, struct drm_file *file)
 	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
 	struct drm_pending_vblank_event *event;
-	unsigned long flags, i;
+	struct drm_plane *plane;
+	unsigned long flags;
 
 	spin_lock_irqsave(&dev->event_lock, flags);
 	event = mdp5_crtc->event;
@@ -157,11 +156,8 @@ static void complete_flip(struct drm_crtc *crtc, struct drm_file *file)
 	}
 	spin_unlock_irqrestore(&dev->event_lock, flags);
 
-	for (i = 0; i < ARRAY_SIZE(mdp5_crtc->planes); i++) {
-		struct drm_plane *plane = mdp5_crtc->planes[i];
-		if (plane)
+	for_each_plane_on_crtc(crtc, plane)
 		mdp5_plane_complete_flip(plane);
-	}
 }
 
 static void pageflip_cb(struct msm_fence_cb *cb)
@@ -502,12 +498,6 @@ static void set_attach(struct drm_crtc *crtc, enum mdp5_pipe pipe_id,
 {
 	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
 
-	BUG_ON(pipe_id >= ARRAY_SIZE(mdp5_crtc->planes));
-
-	if (mdp5_crtc->planes[pipe_id] == plane)
-		return;
-
-	mdp5_crtc->planes[pipe_id] = plane;
 	blend_setup(crtc);
 	if (mdp5_crtc->enabled && (plane != crtc->primary))
 		crtc_flush(crtc);
@@ -554,6 +544,7 @@ struct drm_crtc *mdp5_crtc_init(struct drm_device *dev,
 
 	drm_crtc_init_with_planes(dev, crtc, plane, NULL, &mdp5_crtc_funcs);
 	drm_crtc_helper_add(crtc, &mdp5_crtc_helper_funcs);
+	plane->crtc = crtc;
 
 	mdp5_plane_install_properties(plane, &crtc->base);