[PATCH 0/9] implicit fencing clarification

[Daniel Vetter]

Hi all,

Somewhat motivated (but only really tangentially) by the dirtyfb
discussion with Rob and Thomas I started digging around in the various
driver implementations for implicit vs. explicit fencing.

There's definitely a huge pile of drivers which don't do any implicit
fencing at all - not sure that's good or not. And for some of the drivers
with more history I think they don't correctly overwrite implicit fencing
when explicit fencing is present. At least I've gotten lost in the mazes
before I found positive proof.

So this is just the lower hanging stuff, plus a doc patch to hopefully
clarify this all better.

Comments and review and especially in the case of the msm/vc4 patches,
also testing, very much welcome.

Thanks, Daniel

Daniel Vetter (9):
  drm/vmwgfx: Remove no-op prepare/cleanup_fb callbacks
  drm: Move simple_display_pipe prepare_fb helper into gem fb helpers
  drm/tve200: Use simple_display_pipe prepare_fb helper
  drm/pl111: Use simple_display_pipe prepare_fb helper
  drm/mxsfb: Use simple_display_pipe prepare_fb helper
  drm/atomic: better doc for implicit vs explicit fencing
  drm/gem-fb-helper: Always do implicit sync
  drm/vc4: Always obey implicit sync
  drm/msm: Always obey implicit fencing

 drivers/gpu/drm/drm_atomic.c                 |  8 +++++++
 drivers/gpu/drm/drm_gem_framebuffer_helper.c | 21 ++++++++++++++++-
 drivers/gpu/drm/msm/msm_atomic.c             |  2 +-
 drivers/gpu/drm/mxsfb/mxsfb_drv.c            |  8 +------
 drivers/gpu/drm/pl111/pl111_display.c        |  8 +------
 drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c  | 17 --------------
 drivers/gpu/drm/tinydrm/ili9225.c            |  2 +-
 drivers/gpu/drm/tinydrm/mi0283qt.c           |  3 ++-
 drivers/gpu/drm/tinydrm/repaper.c            |  2 +-
 drivers/gpu/drm/tinydrm/st7586.c             |  2 +-
 drivers/gpu/drm/tinydrm/st7735r.c            |  2 +-
 drivers/gpu/drm/tve200/tve200_display.c      |  8 +------
 drivers/gpu/drm/vc4/vc4_plane.c              | 11 +++++----
 drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c          | 35 ----------------------------
 include/drm/drm_gem_framebuffer_helper.h     |  3 +++
 include/drm/drm_modeset_helper_vtables.h     |  5 +++-
 include/drm/drm_plane.h                      |  7 +++++-
 include/drm/drm_simple_kms_helper.h          |  3 +++
 include/drm/tinydrm/tinydrm.h                |  2 --
 19 files changed, 61 insertions(+), 88 deletions(-)

-- 
2.16.2