path: root/include/media/videobuf-dma-sg.h
diff options
authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2010-05-11 10:36:30 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-08-02 15:21:45 -0300
commit952684035a91334dbe33b15063514cab5e7c6907 (patch)
treefbd82c8a9af67ab15369a1f120feafaa8836aa14 /include/media/videobuf-dma-sg.h
parenta438d6da52b991b6896742a0f9aed80c2f82da87 (diff)
V4L/DVB: videobuf: Remove the videobuf_sg_dma_map/unmap functions
Instead of creating dirty wrappers around videobuf_dma_map/unmap that create a dummy videobuf_queue structure, modify videobuf_dma_map/unmap to take a device pointer argument and use it directly. The videobuf_sg_dma_map/unmap then become unused and can be removed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/videobuf-dma-sg.h')
1 files changed, 12 insertions, 8 deletions
diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h
index a195f3b9c00a..80130100e450 100644
--- a/include/media/videobuf-dma-sg.h
+++ b/include/media/videobuf-dma-sg.h
@@ -87,6 +87,16 @@ struct videobuf_dma_sg_memory {
struct videobuf_dmabuf dma;
+ * Scatter-gather DMA buffer API.
+ *
+ * These functions provide a simple way to create a page list and a
+ * scatter-gather list from a kernel, userspace of physical address and map the
+ * memory for DMA operation.
+ *
+ * Despite the name, this is totally unrelated to videobuf, except that
+ * videobuf-dma-sg uses the same API internally.
+ */
void videobuf_dma_init(struct videobuf_dmabuf *dma);
int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
unsigned long data, unsigned long size);
@@ -96,8 +106,8 @@ int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
dma_addr_t addr, int nr_pages);
int videobuf_dma_free(struct videobuf_dmabuf *dma);
-int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma);
-int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma);
+int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma);
+int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);
struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf);
void *videobuf_sg_alloc(size_t size);
@@ -111,11 +121,5 @@ void videobuf_queue_sg_init(struct videobuf_queue *q,
unsigned int msize,
void *priv);
-/*FIXME: these variants are used only on *-alsa code, where videobuf is
- * used without queue
- */
-int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma);
-int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);
#endif /* _VIDEOBUF_DMA_SG_H */

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