diff options
| author |   Marek Szyprowski <m.szyprowski@samsung.com> | 2020-05-08 16:04:44 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2020-09-10 08:17:48 +0200 |
| commit | d46e7ae24b81533d21edfa90914d27efa0c5f85d (patch) | |
| tree | a97b32329877f5d95b9c41c7507d5672dba2754e /include/drm/drm_prime.h | |
| parent | Linux 5.9-rc1 (diff) | |
| download | linux-dev-d46e7ae24b81533d21edfa90914d27efa0c5f85d.tar.xz linux-dev-d46e7ae24b81533d21edfa90914d27efa0c5f85d.zip | |
drm: prime: add common helper to check scatterlist contiguity
It is a common operation done by DRM drivers to check the contiguity
of the DMA-mapped buffer described by a scatterlist in the
sg_table object. Let's add a common helper for this operation.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Diffstat (limited to 'include/drm/drm_prime.h')
| -rw-r--r-- | include/drm/drm_prime.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h index 9af7422b44cf..47ef11614627 100644 --- a/include/drm/drm_prime.h +++ b/include/drm/drm_prime.h @@ -92,6 +92,8 @@ struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_page struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj, int flags); +unsigned long drm_prime_get_contiguous_size(struct sg_table *sgt); + /* helper functions for importing */ struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev, struct dma_buf *dma_buf, |