diff options
| author | Arto Merilainen <amerilainen@nvidia.com> | 2014-02-16 15:22:50 +0200 |
|---|---|---|
| committer | Terje Bergstrom <tbergstrom@nvidia.com> | 2014-02-26 22:35:21 -0800 |
| commit | a5757cc67b0e151475101bf451df9fc092816a46 (patch) | |
| tree | d7033827c82471e34df67d1ef447a1e0c47d846d /include/linux/dma-buf.h | |
| parent | b9de88f6b2362532edbab617fd2d824b83fcf059 (diff) | |
dmabuf: Support driver data
Occassionally we need to store driver/device specific data of a device
that survives over attach/detach sequence. This patch adds support for
defining drvdata inside dmabuf.
Bug 1450489
Change-Id: I840d415657a07ef86476e32bcac4e13a8706ece4
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/368139
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Diffstat (limited to 'include/linux/dma-buf.h')
| -rw-r--r-- | include/linux/dma-buf.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index dfac5ed31120..cf1f03f69a47 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -104,6 +104,10 @@ struct dma_buf_ops { void *(*vmap)(struct dma_buf *); void (*vunmap)(struct dma_buf *, void *vaddr); + + void *(*get_drvdata)(struct dma_buf *, struct device *); + int (*set_drvdata)(struct dma_buf *, struct device *, void *priv, + void (*)(void *)); }; /** @@ -177,6 +181,10 @@ int dma_buf_fd(struct dma_buf *dmabuf, int flags); struct dma_buf *dma_buf_get(int fd); void dma_buf_put(struct dma_buf *dmabuf); +int dma_buf_set_drvdata(struct dma_buf *, struct device *, + void *, void (*destroy)(void *)); +void *dma_buf_get_drvdata(struct dma_buf *, struct device *); + struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *, enum dma_data_direction); void dma_buf_unmap_attachment(struct dma_buf_attachment *, struct sg_table *, |