/* Export DMA buffer */
static int vidioc_expbuf(struct file *file, void *priv,
struct v4l2_exportbuffer *eb)
{
struct s5p_mfc_ctx *ctx = fh_to_ctx(priv);
if (eb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
return vb2_expbuf(&ctx->vq_src, eb);
if (eb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return vb2_expbuf(&ctx->vq_dst, eb);
return -EINVAL;
}
/**
* v4l2_m2m_expbuf() - export a source or destination buffer, depending on
* the type
*/
int v4l2_m2m_expbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_exportbuffer *eb)
{
struct vb2_queue *vq;
vq = v4l2_m2m_get_vq(m2m_ctx, eb->type);
return vb2_expbuf(vq, eb);
}
int vb2_ioctl_expbuf(struct file *file, void *priv, struct v4l2_exportbuffer *p)
{
struct video_device *vdev = video_devdata(file);
if (vb2_queue_is_busy(vdev, file))
return -EBUSY;
return vb2_expbuf(vdev->queue, p);
}
int uvc_export_buffer(struct uvc_video_queue *queue,
struct v4l2_exportbuffer *exp)
{
int ret;
mutex_lock(&queue->mutex);
ret = vb2_expbuf(&queue->queue, exp);
mutex_unlock(&queue->mutex);
return ret;
}
static int
xvip_dma_expbuf(struct file *file, void *priv, struct v4l2_exportbuffer *eb)
{
struct v4l2_fh *vfh = file->private_data;
struct xvip_dma *dma = to_xvip_dma(vfh->vdev);
int ret;
mutex_lock(&dma->lock);
if (dma->queue.owner && dma->queue.owner != vfh) {
ret = -EBUSY;
goto done;
}
ret = vb2_expbuf(&dma->queue, eb);
done:
mutex_unlock(&dma->lock);
return ret;
}