[Intel-gfx] [PATCH 0/8] eDP DRRS based on frontbuffer tracking

[Vandana Kannan]

This patch series inserts DRRS into frontbuffer tracking mechanism.

1. Previous submission for this feature was designed considering only eDP
DRRS. In this series, apart from following fb tracking, changes have been made
to make structures generic so that it can be of use to any other code
addition to support DRRS with other display types.
2. DRRS support is checked based on VBT setting and panel's capability (if
more than one RR is supported).
3. Based on DRRS support availability, related structures are initialized or
cleaned up through calls from enable/disable DDI respectively.
4. Since flip() indicates busyness, changes have been made to invalidate
DRRS during flip. This changes RR back to preferred mode RR. New work to set
low RR is scheduled after a delay of x ms.
5. This series includes patches to support RR switching on all platforms.
6. A module param has been added, carrying forward the input from the
previous submission of the feature. This param indicates the delay in ms after
which a switch to low RR can be made. By default, this is set to 0
indicating that the feature is disabled.

Durgadoss R (1):
  drm/i915: Enable eDP DRRS for CHV

Vandana Kannan (7):
  drm/i915: Modifying structures related to DRRS
  drm/i915: Initialize DRRS delayed work
  drm/i915: Enable/disable DRRS
  drm/i915: DRRS calls based on frontbuffer
  drm/i915/bdw: Add support for DRRS to switch RR
  drm/i915: Support for RR switching on VLV
  drm/i915: Add drrs_interval module parameter

 drivers/gpu/drm/i915/i915_drv.h          |  33 +++--
 drivers/gpu/drm/i915/i915_params.c       |   8 ++
 drivers/gpu/drm/i915/i915_reg.h          |   1 +
 drivers/gpu/drm/i915/intel_ddi.c         |   2 +
 drivers/gpu/drm/i915/intel_display.c     |  21 ++-
 drivers/gpu/drm/i915/intel_dp.c          | 217 ++++++++++++++++++++++++++-----
 drivers/gpu/drm/i915/intel_drv.h         |  26 ++--
 drivers/gpu/drm/i915/intel_frontbuffer.c |   2 +
 8 files changed, 239 insertions(+), 71 deletions(-)

-- 
2.0.1