[RFC v4 00/11] drm: Extract DPCD backlight helpers from i915, add support in nouveau

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This series:
* Cleans up i915's DPCD backlight code a little bit
* Extracts i915's DPCD backlight code into a set of shared DRM helpers
* Starts using those helpers in nouveau to add support to nouveau for
  DPCD backlight control

v2 series-wide changes:
* Rebase
v3 series-wide changes:
* Split up the changes to intel's backlight code into separate patches
v4 series-wide changes:
* Don't forget to actually include the patch that starts using these
  helpers in nouveau

Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxx>
Cc: greg.depoire@xxxxxxxxx

Lyude Paul (11):
  drm/nouveau/kms/nv40-/backlight: Assign prop type once
  drm/nouveau/kms: Don't probe eDP connectors more then once
  drm/i915/dpcd_bl: Remove redundant AUX backlight frequency
    calculations
  drm/i915/dpcd_bl: Handle drm_dpcd_read/write() return values correctly
  drm/i915/dpcd_bl: Cleanup intel_dp_aux_vesa_enable_backlight() a bit
  drm/i915/dpcd_bl: Cache some backlight capabilities in
    intel_panel.backlight
  drm/i915/dpcd_bl: Move VESA backlight enabling code closer together
  drm/i915/dpcd_bl: Return early in vesa_calc_max_backlight if we can't
    read PWMGEN_BIT_COUNT
  drm/i915/dpcd_bl: Print return codes for VESA backlight failures
  drm/dp: Extract i915's eDP backlight code into DRM helpers
  drm/nouveau/kms/nv50-: Add basic DPCD backlight support for nouveau

 drivers/gpu/drm/drm_dp_helper.c               | 332 ++++++++++++++++++
 .../drm/i915/display/intel_display_types.h    |   2 +-
 .../drm/i915/display/intel_dp_aux_backlight.c | 329 +++--------------
 drivers/gpu/drm/nouveau/dispnv50/disp.c       |  28 ++
 drivers/gpu/drm/nouveau/nouveau_backlight.c   | 170 +++++++--
 drivers/gpu/drm/nouveau/nouveau_connector.c   |   6 +
 drivers/gpu/drm/nouveau/nouveau_connector.h   |   9 +-
 drivers/gpu/drm/nouveau/nouveau_encoder.h     |   1 +
 include/drm/drm_dp_helper.h                   |  48 +++
 9 files changed, 614 insertions(+), 311 deletions(-)

-- 
2.29.2

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