diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-06-14 17:37:44 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-11-25 23:12:24 +0400 |
| commit | 199d101efdbae654ab86c5251e35a175f11ddaac (patch) | |
| tree | 425a1fdd4e18c21b55f6b4b9172a46cd027abb96 /drivers/media/v4l2-core/videobuf2-dma-contig.c | |
| parent | 3e0c2f2046665bf580273b69ab18d9c76a550e34 (diff) | |
| download | linux-199d101efdbae654ab86c5251e35a175f11ddaac.tar.xz | |
[media] v4l: vb2-dma-contig: add prepare/finish to dma-contig allocator
Add prepare/finish callbacks to vb2-dma-contig allocator.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-dma-contig.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-contig.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c index 8486e06cb618..494a824f57c4 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c @@ -103,6 +103,28 @@ static unsigned int vb2_dc_num_users(void *buf_priv) return atomic_read(&buf->refcount); } +static void vb2_dc_prepare(void *buf_priv) +{ + struct vb2_dc_buf *buf = buf_priv; + struct sg_table *sgt = buf->dma_sgt; + + if (!sgt) + return; + + dma_sync_sg_for_device(buf->dev, sgt->sgl, sgt->nents, buf->dma_dir); +} + +static void vb2_dc_finish(void *buf_priv) +{ + struct vb2_dc_buf *buf = buf_priv; + struct sg_table *sgt = buf->dma_sgt; + + if (!sgt) + return; + + dma_sync_sg_for_cpu(buf->dev, sgt->sgl, sgt->nents, buf->dma_dir); +} + /*********************************************/ /* callbacks for MMAP buffers */ /*********************************************/ @@ -366,6 +388,8 @@ const struct vb2_mem_ops vb2_dma_contig_memops = { .mmap = vb2_dc_mmap, .get_userptr = vb2_dc_get_userptr, .put_userptr = vb2_dc_put_userptr, + .prepare = vb2_dc_prepare, + .finish = vb2_dc_finish, .num_users = vb2_dc_num_users, }; EXPORT_SYMBOL_GPL(vb2_dma_contig_memops); |