This patch adds support for vmap and kmap callbacks
for DMABUF exporter.
Signed-off-by: Tomasz Stanislawski <t.stanislaws@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
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,
};
--
1.7.9.5
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