This patch adds support for vmap and kmap callbacks for DMABUF exporter.
Signed-off-by: Tomasz Stanislawski t.stanislaws@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- drivers/media/video/videobuf2-dma-contig.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/drivers/media/video/videobuf2-dma-contig.c b/drivers/media/video/videobuf2-dma-contig.c index b5826e0..59ee81c 100644 --- a/drivers/media/video/videobuf2-dma-contig.c +++ b/drivers/media/video/videobuf2-dma-contig.c @@ -419,11 +419,28 @@ static void vb2_dc_dmabuf_ops_release(struct dma_buf *dbuf) vb2_dc_put(dbuf->priv); }
+static void *vb2_dc_dmabuf_ops_kmap(struct dma_buf *dbuf, unsigned long pgnum) +{ + struct vb2_dc_buf *buf = dbuf->priv; + + return buf->vaddr + pgnum * PAGE_SIZE; +} + +static void *vb2_dc_dmabuf_ops_vmap(struct dma_buf *dbuf) +{ + struct vb2_dc_buf *buf = dbuf->priv; + + return buf->vaddr; +} + static struct dma_buf_ops vb2_dc_dmabuf_ops = { .attach = vb2_dc_dmabuf_ops_attach, .detach = vb2_dc_dmabuf_ops_detach, .map_dma_buf = vb2_dc_dmabuf_ops_map, .unmap_dma_buf = vb2_dc_dmabuf_ops_unmap, + .kmap = vb2_dc_dmabuf_ops_kmap, + .kmap_atomic = vb2_dc_dmabuf_ops_kmap, + .vmap = vb2_dc_dmabuf_ops_vmap, .release = vb2_dc_dmabuf_ops_release, };