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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 <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-01-29 20:32:33 +01:00
parent 88759686c7
commit d40326f4b9
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/tegra/gem.c
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@ -394,6 +394,18 @@ static int tegra_gem_prime_mmap(struct dma_buf *buf, struct vm_area_struct *vma)
return -EINVAL; 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 = { static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = {
.map_dma_buf = tegra_gem_prime_map_dma_buf, .map_dma_buf = tegra_gem_prime_map_dma_buf,
.unmap_dma_buf = tegra_gem_prime_unmap_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, .kmap = tegra_gem_prime_kmap,
.kunmap = tegra_gem_prime_kunmap, .kunmap = tegra_gem_prime_kunmap,
.mmap = tegra_gem_prime_mmap, .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, struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,