Here's a second RFC for transitioning watermark updates to an atomic model. As
in the first series, I'm only transitioning a single platform style to start
with (ilk-style watermarks). For pre-gen9 platforms, two sets of watermarks
are pre-computed at atomic 'check' time --- one set that can be programmed
immediately without waiting for a vblank (these will satisfy both the new and
old hardware state) and a second set that should be programmed following the
vblank (optimal values that may not work until the hardware has actually
switched to the new state).
A lot of the differences between this series and the first one are just a
matter of rebasing on the latest code; there's been a lot of work by Maarten
and Ville that have significantly changed (for the better) the areas this code
touches.
I'm working on some updates for skl/bxt right now (which don't need the
two-step process used by pre-gen9, but do need some other rework); I'll post
those later once I finish them off and have a chance to test them on real BXT
hardware.
Matt Roper (7):
drm/i915: Eliminate usage of plane_wm_parameters from ILK-style WM
code
drm/i915: Eliminate usage of pipe_wm_parameters from ILK-style WM
drm/i915/ivb: Move WaCxSRDisabledForSpriteScaling w/a to atomic check
drm/i915: Move active watermarks into CRTC state
drm/i915: Calculate ILK-style watermarks during atomic check (v2)
drm/i915: Allow final wm programming to be scheduled after next vblank
(v2)
drm/i915: Add two-stage ILK-style watermark programming (v2)
Ville Syrjälä (1):
drm/i915: Refactor ilk_update_wm (v3)
drivers/gpu/drm/i915/i915_drv.h | 18 ++
drivers/gpu/drm/i915/i915_irq.c | 16 ++
drivers/gpu/drm/i915/intel_atomic.c | 1 +
drivers/gpu/drm/i915/intel_display.c | 116 ++++++++++--
drivers/gpu/drm/i915/intel_drv.h | 73 +++++---
drivers/gpu/drm/i915/intel_pm.c | 330 +++++++++++++++++++----------------
drivers/gpu/drm/i915/intel_sprite.c | 8 -
7 files changed, 366 insertions(+), 196 deletions(-)
--
2.1.4
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