[media] media: fsl-viu: fix support for streaming with mmap method

Streaming using mmap didn't work in the VIU driver. We need to
start/stop DMA in streamon/streamoff and free the buffers on
release. Add appropriate driver extension now.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/fsl-viu.c b/drivers/media/video/fsl-viu.c
index b8faff2dd711c7d2c014813996da862106f48d2c..693e9c07e3f4a4dfbab4b4c2d5665328e6356b38 100644 (file)
--- a/drivers/media/video/fsl-viu.c
+++ b/drivers/media/video/fsl-viu.c
@@ -915,6 +915,8 @@ static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
        if (fh->type != i)
                return -EINVAL;
 
+       viu_start_dma(fh->dev);
+
        return videobuf_streamon(&fh->vb_vidq);
 }
 
@@ -927,6 +929,8 @@ static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
        if (fh->type != i)
                return -EINVAL;
 
+       viu_stop_dma(fh->dev);
+
        return videobuf_streamoff(&fh->vb_vidq);
 }
 
@@ -1331,6 +1335,7 @@ static int viu_release(struct file *file)
 
        viu_stop_dma(dev);
        videobuf_stop(&fh->vb_vidq);
+       videobuf_mmap_free(&fh->vb_vidq);
 
        kfree(fh);