drm_gem_cma_prime_vmap — map a CMA GEM object into the kernel's virtual address space
void * drm_gem_cma_prime_vmap ( | struct drm_gem_object * obj); |
This function maps a buffer exported via DRM PRIME into the kernel's
virtual address space. Since the CMA buffers are already mapped into the
kernel virtual address space this simply returns the cached virtual
address. Drivers using the CMA helpers should set this as their DRM
driver's ->gem_prime_vmap callback.