[media] media: blackfin: bfin_capture: use vb2_ioctl_* helpers

this patch adds support to vb2_ioctl_* helpers.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/blackfin/bfin_capture.c

@@ -276,6 +276,7 @@ static int bcap_start_streaming(struct vb2_queue *vq, unsigned int count)
 	struct ppi_if *ppi = bcap_dev->ppi;
 	struct bcap_buffer *buf, *tmp;
 	struct ppi_params params;
+	dma_addr_t addr;
 	int ret;
 
 	/* enable streamon on the sub device */
@@ -335,6 +336,17 @@ static int bcap_start_streaming(struct vb2_queue *vq, unsigned int count)
 	reinit_completion(&bcap_dev->comp);
 	bcap_dev->stop = false;
 
+	/* get the next frame from the dma queue */
+	bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
+					struct bcap_buffer, list);
+	/* remove buffer from the dma queue */
+	list_del_init(&bcap_dev->cur_frm->list);
+	addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb, 0);
+	/* update DMA address */
+	ppi->ops->update_addr(ppi, (unsigned long)addr);
+	/* enable ppi */
+	ppi->ops->start(ppi);
+
 	return 0;
 
 err:
@@ -381,40 +393,6 @@ static struct vb2_ops bcap_video_qops = {
 	.stop_streaming         = bcap_stop_streaming,
 };
 
-static int bcap_reqbufs(struct file *file, void *priv,
-			struct v4l2_requestbuffers *req_buf)
-{
-	struct bcap_device *bcap_dev = video_drvdata(file);
-	struct vb2_queue *vq = &bcap_dev->buffer_queue;
-
-	return vb2_reqbufs(vq, req_buf);
-}
-
-static int bcap_querybuf(struct file *file, void *priv,
-				struct v4l2_buffer *buf)
-{
-	struct bcap_device *bcap_dev = video_drvdata(file);
-
-	return vb2_querybuf(&bcap_dev->buffer_queue, buf);
-}
-
-static int bcap_qbuf(struct file *file, void *priv,
-			struct v4l2_buffer *buf)
-{
-	struct bcap_device *bcap_dev = video_drvdata(file);
-
-	return vb2_qbuf(&bcap_dev->buffer_queue, buf);
-}
-
-static int bcap_dqbuf(struct file *file, void *priv,
-			struct v4l2_buffer *buf)
-{
-	struct bcap_device *bcap_dev = video_drvdata(file);
-
-	return vb2_dqbuf(&bcap_dev->buffer_queue,
-				buf, file->f_flags & O_NONBLOCK);
-}
-
 static irqreturn_t bcap_isr(int irq, void *dev_id)
 {
 	struct ppi_if *ppi = dev_id;
@@ -456,51 +434,6 @@ static irqreturn_t bcap_isr(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int bcap_streamon(struct file *file, void *priv,
-				enum v4l2_buf_type buf_type)
-{
-	struct bcap_device *bcap_dev = video_drvdata(file);
-	struct ppi_if *ppi = bcap_dev->ppi;
-	dma_addr_t addr;
-	int ret;
-
-	/* call streamon to start streaming in videobuf */
-	ret = vb2_streamon(&bcap_dev->buffer_queue, buf_type);
-	if (ret)
-		return ret;
-
-	/* if dma queue is empty, return error */
-	if (list_empty(&bcap_dev->dma_queue)) {
-		v4l2_err(&bcap_dev->v4l2_dev, "dma queue is empty\n");
-		ret = -EINVAL;
-		goto err;
-	}
-
-	/* get the next frame from the dma queue */
-	bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
-					struct bcap_buffer, list);
-	/* remove buffer from the dma queue */
-	list_del_init(&bcap_dev->cur_frm->list);
-	addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb, 0);
-	/* update DMA address */
-	ppi->ops->update_addr(ppi, (unsigned long)addr);
-	/* enable ppi */
-	ppi->ops->start(ppi);
-
-	return 0;
-err:
-	vb2_streamoff(&bcap_dev->buffer_queue, buf_type);
-	return ret;
-}
-
-static int bcap_streamoff(struct file *file, void *priv,
-				enum v4l2_buf_type buf_type)
-{
-	struct bcap_device *bcap_dev = video_drvdata(file);
-
-	return vb2_streamoff(&bcap_dev->buffer_queue, buf_type);
-}
-
 static int bcap_querystd(struct file *file, void *priv, v4l2_std_id *std)
 {
 	struct bcap_device *bcap_dev = video_drvdata(file);
@@ -786,12 +719,12 @@ static const struct v4l2_ioctl_ops bcap_ioctl_ops = {
 	.vidioc_g_dv_timings     = bcap_g_dv_timings,
 	.vidioc_query_dv_timings = bcap_query_dv_timings,
 	.vidioc_enum_dv_timings  = bcap_enum_dv_timings,
-	.vidioc_reqbufs          = bcap_reqbufs,
-	.vidioc_querybuf         = bcap_querybuf,
-	.vidioc_qbuf             = bcap_qbuf,
-	.vidioc_dqbuf            = bcap_dqbuf,
-	.vidioc_streamon         = bcap_streamon,
-	.vidioc_streamoff        = bcap_streamoff,
+	.vidioc_reqbufs          = vb2_ioctl_reqbufs,
+	.vidioc_querybuf         = vb2_ioctl_querybuf,
+	.vidioc_qbuf             = vb2_ioctl_qbuf,
+	.vidioc_dqbuf            = vb2_ioctl_dqbuf,
+	.vidioc_streamon         = vb2_ioctl_streamon,
+	.vidioc_streamoff        = vb2_ioctl_streamoff,
 	.vidioc_g_parm           = bcap_g_parm,
 	.vidioc_s_parm           = bcap_s_parm,
 	.vidioc_log_status       = bcap_log_status,