Hello,
Here's the second version of the GEM CMA DMA-BUF support patches.
The code is based on the Exynos DRM DMA-BUF implementation. The exporter role has been successfully tested with the Renesas R-Car DU driver.
Dave, is there a chance this could make it to v3.11 ?
Changes compared to v1:
- Added a mixing sg_free_table() in drm_gem_cma_dmabuf_map() - Implement drm_gem_cma_dmabuf_mmap()
Laurent Pinchart (5): drm/gem: Split drm_gem_mmap() into object search and object mapping drm/omap: Use drm_gem_mmap_obj() to implement dma-buf mmap drm: GEM CMA: Split object creation into object alloc and DMA memory alloc drm: GEM CMA: Split object mapping into GEM mapping and CMA mapping drm: GEM CMA: Add DRM PRIME support
drivers/gpu/drm/drm_gem.c | 83 +++--- drivers/gpu/drm/drm_gem_cma_helper.c | 408 +++++++++++++++++++++++++++--- drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c | 32 +-- include/drm/drmP.h | 2 + include/drm/drm_gem_cma_helper.h | 9 + 5 files changed, 438 insertions(+), 96 deletions(-)