media: sun6i-csi: Pass and store csi device directly in video code

The video structure is part of the main csi device structure, so pass
pointers to that top-level structure directly. This makes it easier to
navigate and access other elements. No functional change intended.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c

@@ -706,7 +706,7 @@ static int sun6i_csi_v4l2_setup(struct sun6i_csi_device *csi_dev)
 
 	/* Video */
 
-	ret = sun6i_video_setup(&csi_dev->video, csi_dev);
+	ret = sun6i_video_setup(csi_dev);
 	if (ret)
 		goto error_v4l2_device;
 
@@ -735,7 +735,7 @@ static int sun6i_csi_v4l2_setup(struct sun6i_csi_device *csi_dev)
 	v4l2_async_nf_cleanup(notifier);
 
 error_video:
-	sun6i_video_cleanup(&csi_dev->video);
+	sun6i_video_cleanup(csi_dev);
 
 error_v4l2_device:
 	v4l2_device_unregister(&v4l2->v4l2_dev);
@@ -756,7 +756,7 @@ static void sun6i_csi_v4l2_cleanup(struct sun6i_csi_device *csi_dev)
 	media_device_unregister(&v4l2->media_dev);
 	v4l2_async_nf_unregister(&v4l2->notifier);
 	v4l2_async_nf_cleanup(&v4l2->notifier);
-	sun6i_video_cleanup(&csi_dev->video);
+	sun6i_video_cleanup(csi_dev);
 	v4l2_device_unregister(&v4l2->v4l2_dev);
 	v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
 	media_device_cleanup(&v4l2->media_dev);
@@ -787,7 +787,7 @@ static irqreturn_t sun6i_csi_interrupt(int irq, void *private)
 	}
 
 	if (status & CSI_CH_INT_STA_FD_PD)
-		sun6i_video_frame_done(&csi_dev->video);
+		sun6i_video_frame_done(csi_dev);
 
 	regmap_write(regmap, CSI_CH_INT_STA_REG, status);
 

drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h

@@ -14,8 +14,6 @@
 struct sun6i_csi_device;
 
 struct sun6i_video {
-	struct sun6i_csi_device		*csi_dev;
-
 	struct video_device		video_dev;
 	struct vb2_queue		queue;
 	struct mutex			lock; /* Queue lock. */
@@ -29,10 +27,9 @@ struct sun6i_video {
 	unsigned int			sequence;
 };
 
-int sun6i_video_setup(struct sun6i_video *video,
-		      struct sun6i_csi_device *csi_dev);
-void sun6i_video_cleanup(struct sun6i_video *video);
+int sun6i_video_setup(struct sun6i_csi_device *csi_dev);
+void sun6i_video_cleanup(struct sun6i_csi_device *csi_dev);
 
-void sun6i_video_frame_done(struct sun6i_video *video);
+void sun6i_video_frame_done(struct sun6i_csi_device *csi_dev);
 
 #endif /* __SUN6I_VIDEO_H__ */