drm/msm: get rid of msm_drm_private::num_crtcs

Drop superfluous msm_drm_private::num_crtcs in favour of using
drm_mode_config::num_crtc or MAX_CRCS as appropriate.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/662578/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

Author: lumag

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

@@ -875,12 +875,11 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 			ret = PTR_ERR(crtc);
 			return ret;
 		}
-		priv->num_crtcs++;
 	}
 
 	/* All CRTCs are compatible with all encoders */
 	drm_for_each_encoder(encoder, dev)
-		encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
+		encoder->possible_crtcs = (1 << dev->mode_config.num_crtc) - 1;
 
 	return 0;
 }

drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c

@@ -297,7 +297,6 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms,
 static int modeset_init(struct mdp4_kms *mdp4_kms)
 {
 	struct drm_device *dev = mdp4_kms->dev;
-	struct msm_drm_private *priv = dev->dev_private;
 	struct drm_plane *plane;
 	struct drm_crtc *crtc;
 	int i, ret;
@@ -347,8 +346,6 @@ static int modeset_init(struct mdp4_kms *mdp4_kms)
 			ret = PTR_ERR(crtc);
 			goto fail;
 		}
-
-		priv->num_crtcs++;
 	}
 
 	/*

drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c

@@ -375,7 +375,6 @@ static int modeset_init_intf(struct mdp5_kms *mdp5_kms,
 static int modeset_init(struct mdp5_kms *mdp5_kms)
 {
 	struct drm_device *dev = mdp5_kms->dev;
-	struct msm_drm_private *priv = dev->dev_private;
 	unsigned int num_crtcs;
 	int i, ret, pi = 0, ci = 0;
 	struct drm_plane *primary[MAX_BASES] = { NULL };
@@ -443,15 +442,14 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
 			DRM_DEV_ERROR(dev->dev, "failed to construct crtc %d (%d)\n", i, ret);
 			goto fail;
 		}
-		priv->num_crtcs++;
 	}
 
 	/*
 	 * Now that we know the number of crtcs we've created, set the possible
 	 * crtcs for the encoders
 	 */
 	drm_for_each_encoder(encoder, dev)
-		encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
+		encoder->possible_crtcs = (1 << dev->mode_config.num_crtc) - 1;
 
 	return 0;
 

drivers/gpu/drm/msm/msm_drv.h

@@ -175,8 +175,6 @@ struct msm_drm_private {
 		struct mutex lock;
 	} lru;
 
-	unsigned int num_crtcs;
-
 	struct msm_drm_thread event_thread[MAX_CRTCS];
 
 	struct notifier_block vmap_notifier;

drivers/gpu/drm/msm/msm_kms.c

@@ -245,7 +245,7 @@ void msm_drm_kms_uninit(struct device *dev)
 	flush_workqueue(kms->wq);
 
 	/* clean up event worker threads */
-	for (i = 0; i < priv->num_crtcs; i++) {
+	for (i = 0; i < MAX_CRTCS; i++) {
 		if (priv->event_thread[i].worker)
 			kthread_destroy_worker(priv->event_thread[i].worker);
 	}
@@ -313,7 +313,7 @@ int msm_drm_kms_init(struct device *dev, const struct drm_driver *drv)
 		sched_set_fifo(ev_thread->worker->task);
 	}
 
-	ret = drm_vblank_init(ddev, priv->num_crtcs);
+	ret = drm_vblank_init(ddev, ddev->mode_config.num_crtc);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev, "failed to initialize vblank\n");
 		goto err_msm_uninit;