Hello,
This is the second version patchset.
GEM CMA supports dma_buf but it needs GEM CMA specific functionality for dma_buf. We can use prime helpers for dma_buf by commit 89177644a7b6306e6084a89eab7e290f4bfef397 "drm: add prime helpers", so this patchset is to replace from using GEM CMA specific functions to using prime helpers.
To Laurent,
It is merged a patch to cache mapping from DRM Prime, can this patchset get your ack?
Changes from v1: - rebased from drm-next branch of git://people.freedesktop.org/~airlied/linux - fix to check whether gem_prime_mmap field is NULL from "drm: add mmap function to prime helpers" commit
Joonyoung Shim (3): drm: add mmap function to prime helpers drm/cma: add low-level hook functions to use prime helpers drm/cma: remove GEM CMA specific dma_buf functionality
drivers/gpu/drm/drm_gem_cma_helper.c | 293 +++++------------------------------ drivers/gpu/drm/drm_prime.c | 8 +- include/drm/drmP.h | 2 + include/drm/drm_gem_cma_helper.h | 13 +- 4 files changed, 60 insertions(+), 256 deletions(-)