[PATCH v2 0/3] drm/cma: use prime helpers instead GEM CMA specific dma_buf functionality

[Joonyoung Shim <jy0922.shim@samsung.com>]

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(-)