[Intel-gfx] [PATCH v3 0/4] Handle dma fences in dirtyfb ioctl

[Jouni Högander]

Currently i915 dirtyfb ioctl is not taking dma fences into
account. This works with features like FBC, PSR, DRRS because our gem
code is triggering flush again when rendering completes. We are
targeting in getting rid of frontbuffer tracking code: Flusing hook
from gem code will be removed as well.

This patch set is adding dma fence handling into i915 dirtyfb ioctl.

v3:
 - Check frontbuffer bits before adding any fence fb
 - Flush only when adding fence cb succeeds
 - Check schedule work success rather than work being pending
 - Init flush work when frontbuffer struct is initialized
v2:
 - Clear fbc and psr busy bits on flip
 - Check if flush work is already pending
 - Use dma_resv_get_singleton

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>

Jouni Högander (4):
  drm/i915/fbc: Clear frontbuffer busy bits on flip
  drm/i915/psr: Clear frontbuffer busy bits on flip
  drm/i915: Add new frontbuffer tracking interface to queue flush
  drm/i915: Handle dma fences in dirtyfb callback

 drivers/gpu/drm/i915/display/intel_fb.c       | 60 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_fbc.c      |  6 +-
 .../gpu/drm/i915/display/intel_frontbuffer.c  | 28 +++++++++
 .../gpu/drm/i915/display/intel_frontbuffer.h  |  4 ++
 drivers/gpu/drm/i915/display/intel_psr.c      |  6 ++
 5 files changed, 97 insertions(+), 7 deletions(-)

-- 
2.34.1