drm/sti: Use drm_crtc_vblank_*() API

Non-legacy drivers should only use this API to allow per-CRTC data to be
eventually moved into struct drm_crtc.

Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Vincent Abriou <vincent.abriou@st.com>

drivers/gpu/drm/sti/sti_crtc.c

@@ -254,46 +254,48 @@ static int sti_crtc_set_property(struct drm_crtc *crtc,
 int sti_crtc_vblank_cb(struct notifier_block *nb,
 		       unsigned long event, void *data)
 {
-	struct drm_device *drm_dev;
 	struct sti_compositor *compo =
 		container_of(nb, struct sti_compositor, vtg_vblank_nb);
-	int *crtc = data;
+	struct drm_crtc *crtc = data;
+	struct sti_mixer *mixer;
 	unsigned long flags;
 	struct sti_private *priv;
+	unsigned int pipe;
 
-	drm_dev = compo->mixer[*crtc]->drm_crtc.dev;
-	priv = drm_dev->dev_private;
+	priv = crtc->dev->dev_private;
+	pipe = drm_crtc_index(crtc);
+	mixer = compo->mixer[pipe];
 
 	if ((event != VTG_TOP_FIELD_EVENT) &&
 	    (event != VTG_BOTTOM_FIELD_EVENT)) {
 		DRM_ERROR("unknown event: %lu\n", event);
 		return -EINVAL;
 	}
 
-	drm_handle_vblank(drm_dev, *crtc);
+	drm_crtc_handle_vblank(crtc);
 
-	spin_lock_irqsave(&drm_dev->event_lock, flags);
-	if (compo->mixer[*crtc]->pending_event) {
-		drm_send_vblank_event(drm_dev, *crtc,
-				      compo->mixer[*crtc]->pending_event);
-		drm_vblank_put(drm_dev, *crtc);
-		compo->mixer[*crtc]->pending_event = NULL;
+	spin_lock_irqsave(&crtc->dev->event_lock, flags);
+	if (mixer->pending_event) {
+		drm_crtc_send_vblank_event(crtc, mixer->pending_event);
+		drm_crtc_vblank_put(crtc);
+		mixer->pending_event = NULL;
 	}
-	spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 
-	if (compo->mixer[*crtc]->status == STI_MIXER_DISABLING) {
+	if (mixer->status == STI_MIXER_DISABLING) {
 		struct drm_plane *p;
 
 		/* Disable mixer only if all overlay planes (GDP and VDP)
 		 * are disabled */
-		list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
+		list_for_each_entry(p, &crtc->dev->mode_config.plane_list,
+				    head) {
 			struct sti_plane *plane = to_sti_plane(p);
 
 			if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)
 				if (plane->status != STI_PLANE_DISABLED)
 					return 0;
 		}
-		sti_crtc_disable(&compo->mixer[*crtc]->drm_crtc);
+		sti_crtc_disable(crtc);
 	}
 
 	return 0;
@@ -304,12 +306,13 @@ int sti_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
 	struct sti_private *dev_priv = dev->dev_private;
 	struct sti_compositor *compo = dev_priv->compo;
 	struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
+	struct drm_crtc *crtc = &compo->mixer[pipe]->drm_crtc;
 
 	DRM_DEBUG_DRIVER("\n");
 
 	if (sti_vtg_register_client(pipe == STI_MIXER_MAIN ?
 			compo->vtg_main : compo->vtg_aux,
-			vtg_vblank_nb, pipe)) {
+			vtg_vblank_nb, crtc)) {
 		DRM_ERROR("Cannot register VTG notifier\n");
 		return -EINVAL;
 	}
@@ -323,6 +326,7 @@ void sti_crtc_disable_vblank(struct drm_device *drm_dev, unsigned int pipe)
 	struct sti_private *priv = drm_dev->dev_private;
 	struct sti_compositor *compo = priv->compo;
 	struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
+	struct drm_crtc *crtc = &compo->mixer[pipe]->drm_crtc;
 
 	DRM_DEBUG_DRIVER("\n");
 
@@ -332,7 +336,7 @@ void sti_crtc_disable_vblank(struct drm_device *drm_dev, unsigned int pipe)
 
 	/* free the resources of the pending requests */
 	if (compo->mixer[pipe]->pending_event) {
-		drm_vblank_put(drm_dev, pipe);
+		drm_crtc_vblank_put(crtc);
 		compo->mixer[pipe]->pending_event = NULL;
 	}
 }

drivers/gpu/drm/sti/sti_gdp.c

@@ -492,7 +492,7 @@ static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
 		/* Register gdp callback */
 		if (sti_vtg_register_client(mixer->id == STI_MIXER_MAIN ?
 				compo->vtg_main : compo->vtg_aux,
-				&gdp->vtg_field_nb, mixer->id)) {
+				&gdp->vtg_field_nb, crtc)) {
 			DRM_ERROR("Cannot register VTG notifier\n");
 			return;
 		}

drivers/gpu/drm/sti/sti_hqvdp.c

@@ -763,7 +763,7 @@ static void sti_hqvdp_atomic_update(struct drm_plane *drm_plane,
 		/* Register VTG Vsync callback to handle bottom fields */
 		if (sti_vtg_register_client(hqvdp->vtg,
 					    &hqvdp->vtg_nb,
-					    mixer->id)) {
+					    crtc)) {
 			DRM_ERROR("Cannot register VTG notifier\n");
 			return;
 		}

drivers/gpu/drm/sti/sti_vtg.c

@@ -79,7 +79,7 @@ LIST_HEAD(vtg_lookup);
  * @irq: VTG irq
  * @type: VTG type (main or aux)
  * @notifier_list: notifier callback
- * @crtc_id: the crtc id for vblank event
+ * @crtc: the CRTC for vblank event
  * @slave: slave vtg
  * @link: List node to link the structure in lookup list
  */
@@ -90,7 +90,7 @@ struct sti_vtg {
 	int irq;
 	u32 irq_status;
 	struct raw_notifier_head notifier_list;
-	int crtc_id;
+	struct drm_crtc *crtc;
 	struct sti_vtg *slave;
 	struct list_head link;
 };
@@ -283,13 +283,13 @@ u32 sti_vtg_get_pixel_number(struct drm_display_mode mode, int x)
 }
 EXPORT_SYMBOL(sti_vtg_get_pixel_number);
 
-int sti_vtg_register_client(struct sti_vtg *vtg,
-		struct notifier_block *nb, int crtc_id)
+int sti_vtg_register_client(struct sti_vtg *vtg, struct notifier_block *nb,
+			    struct drm_crtc *crtc)
 {
 	if (vtg->slave)
-		return sti_vtg_register_client(vtg->slave, nb, crtc_id);
+		return sti_vtg_register_client(vtg->slave, nb, crtc);
 
-	vtg->crtc_id = crtc_id;
+	vtg->crtc = crtc;
 	return raw_notifier_chain_register(&vtg->notifier_list, nb);
 }
 EXPORT_SYMBOL(sti_vtg_register_client);
@@ -311,7 +311,7 @@ static irqreturn_t vtg_irq_thread(int irq, void *arg)
 	event = (vtg->irq_status & VTG_IRQ_TOP) ?
 		VTG_TOP_FIELD_EVENT : VTG_BOTTOM_FIELD_EVENT;
 
-	raw_notifier_call_chain(&vtg->notifier_list, event, &vtg->crtc_id);
+	raw_notifier_call_chain(&vtg->notifier_list, event, vtg->crtc);
 
 	return IRQ_HANDLED;
 }

drivers/gpu/drm/sti/sti_vtg.h

@@ -17,8 +17,8 @@ struct notifier_block;
 struct sti_vtg *of_vtg_find(struct device_node *np);
 void sti_vtg_set_config(struct sti_vtg *vtg,
 		const struct drm_display_mode *mode);
-int sti_vtg_register_client(struct sti_vtg *vtg,
-		struct notifier_block *nb, int crtc_id);
+int sti_vtg_register_client(struct sti_vtg *vtg, struct notifier_block *nb,
+			    struct drm_crtc *crtc);
 int sti_vtg_unregister_client(struct sti_vtg *vtg,
 		struct notifier_block *nb);