drm/tegra: prime: Add vmap support
PATCH 1/1 drm/tegra: prime: Add vmap support
This is trivial to support since all GEM objects are mapped into kernel space anyway.
Signed-off-by Thierry Reding <[email protected]>
--- drivers/gpu/drm/tegra/gem.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
drivers/gpu/drm/tegra/gem.c +14 -0
@@ -394,6 +394,18 @@ static int tegra_gem_prime_mmap(struct dma_buf *buf, struct vm_area_struct *vma)return -EINVAL ; } +static void *tegra_gem_prime_vmap (struct dma_buf *buf) +{ +struct drm_gem_object *gem = buf->priv; +struct tegra_bo *bo =to_tegra_bo (gem); + +return bo->vaddr; +} + +static void tegra_gem_prime_vunmap (struct dma_buf *buf,void *vaddr) +{ +} +static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = { .map_dma_buf = tegra_gem_prime_map_dma_buf, .unmap_dma_buf = tegra_gem_prime_unmap_dma_buf,
@@ -403,6 +415,8 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = { .kmap = tegra_gem_prime_kmap, .kunmap = tegra_gem_prime_kunmap, .mmap = tegra_gem_prime_mmap, + .vmap = tegra_gem_prime_vmap, + .vunmap = tegra_gem_prime_vunmap, }; struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
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1.8.4.2