drm/armada: move frame wait into armada_frame

Both the CRTC and overlay frames have their own wait queues.  It would
make more sense if these were part of the plane - the primary plane for
the CRTC and overlay plane for the overlay.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/gpu/drm/armada/armada_crtc.c

@@ -455,7 +455,7 @@ static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat)
 		if (work)
 			armada_drm_crtc_complete_frame_work(dcrtc, work);
 
-		wake_up(&dcrtc->frame_wait);
+		wake_up(&drm_to_armada_plane(dcrtc->crtc.primary)->frame_wait);
 	}
 }
 
@@ -571,7 +571,8 @@ static int armada_drm_crtc_mode_set(struct drm_crtc *crtc,
 		adj->crtc_vtotal, tm, bm);
 
 	/* Wait for pending flips to complete */
-	wait_event(dcrtc->frame_wait, !dcrtc->frame_work);
+	wait_event(drm_to_armada_plane(dcrtc->crtc.primary)->frame_wait,
+		   !dcrtc->frame_work);
 
 	drm_crtc_vblank_off(crtc);
 
@@ -688,7 +689,8 @@ static int armada_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 	armada_reg_queue_end(regs, i);
 
 	/* Wait for pending flips to complete */
-	wait_event(dcrtc->frame_wait, !dcrtc->frame_work);
+	wait_event(drm_to_armada_plane(dcrtc->crtc.primary)->frame_wait,
+		   !dcrtc->frame_work);
 
 	/* Take a reference to the new fb as we're using it */
 	drm_framebuffer_reference(crtc->primary->fb);
@@ -1096,6 +1098,13 @@ static const struct drm_plane_funcs armada_primary_plane_funcs = {
 	.destroy	= drm_primary_helper_destroy,
 };
 
+int armada_drm_plane_init(struct armada_plane *plane)
+{
+	init_waitqueue_head(&plane->frame_wait);
+
+	return 0;
+}
+
 static struct drm_prop_enum_list armada_drm_csc_yuv_enum_list[] = {
 	{ CSC_AUTO,        "Auto" },
 	{ CSC_YUV_CCIR601, "CCIR601" },
@@ -1166,7 +1175,6 @@ static int armada_drm_crtc_create(struct drm_device *drm, struct device *dev,
 	spin_lock_init(&dcrtc->irq_lock);
 	dcrtc->irq_ena = CLEAN_SPU_IRQ_ISR;
 	INIT_LIST_HEAD(&dcrtc->vbl_list);
-	init_waitqueue_head(&dcrtc->frame_wait);
 
 	/* Initialize some registers which we don't otherwise set */
 	writel_relaxed(0x00000001, dcrtc->base + LCD_CFG_SCLK_DIV);
@@ -1208,6 +1216,12 @@ static int armada_drm_crtc_create(struct drm_device *drm, struct device *dev,
 	if (!primary)
 		return -ENOMEM;
 
+	ret = armada_drm_plane_init(primary);
+	if (ret) {
+		kfree(primary);
+		return ret;
+	}
+
 	ret = drm_universal_plane_init(drm, &primary->base, 0,
 				       &armada_primary_plane_funcs,
 				       armada_primary_formats,

drivers/gpu/drm/armada/armada_crtc.h

@@ -36,9 +36,12 @@ struct armada_variant;
 
 struct armada_plane {
 	struct drm_plane	base;
+	wait_queue_head_t	frame_wait;
 };
 #define drm_to_armada_plane(p) container_of(p, struct armada_plane, base)
 
+int armada_drm_plane_init(struct armada_plane *plane);
+
 struct armada_crtc {
 	struct drm_crtc		crtc;
 	const struct armada_variant *variant;
@@ -71,7 +74,6 @@ struct armada_crtc {
 	uint32_t		dumb_ctrl;
 	uint32_t		spu_iopad_ctrl;
 
-	wait_queue_head_t	frame_wait;
 	struct armada_frame_work *frame_work;
 
 	spinlock_t		irq_lock;

drivers/gpu/drm/armada/armada_overlay.c

@@ -39,7 +39,6 @@ struct armada_ovl_plane {
 	struct {
 		struct armada_vbl_event update;
 		struct armada_regs regs[13];
-		wait_queue_head_t wait;
 	} vbl;
 	struct armada_ovl_plane_properties prop;
 };
@@ -90,7 +89,7 @@ static void armada_ovl_plane_vbl(struct armada_crtc *dcrtc, void *data)
 	armada_drm_crtc_update_regs(dcrtc, dplane->vbl.regs);
 	armada_ovl_retire_fb(dplane, NULL);
 
-	wake_up(&dplane->vbl.wait);
+	wake_up(&dplane->base.frame_wait);
 }
 
 static int
@@ -163,7 +162,7 @@ armada_ovl_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
 			       dcrtc->base + LCD_SPU_SRAM_PARA1);
 	}
 
-	wait_event_timeout(dplane->vbl.wait,
+	wait_event_timeout(dplane->base.frame_wait,
 			   list_empty(&dplane->vbl.update.node),
 			   HZ/25);
 
@@ -451,7 +450,12 @@ int armada_overlay_plane_create(struct drm_device *dev, unsigned long crtcs)
 	if (!dplane)
 		return -ENOMEM;
 
-	init_waitqueue_head(&dplane->vbl.wait);
+	ret = armada_drm_plane_init(&dplane->base);
+	if (ret) {
+		kfree(dplane);
+		return ret;
+	}
+
 	armada_drm_vbl_event_init(&dplane->vbl.update, armada_ovl_plane_vbl,
 				  dplane);