[PATCH 0/4] drm/panel, drm/i915: ACPI support for panel follower

[Jani Nikula <jani.nikula@intel.com>]

Hi all -

This series expands panel follower to ACPI, and enables drm_panel on
i915.

Patch 1 makes panel follower matching independent of DT, making it also
work with ACPI. Similar to DT, you can use a _DSD "panel" property to
describe the dependency.

Patches 2-4 add drm_panel support to i915 DSI, making it possible to
have followers be notified of panel states.

It's not a whole lot of code, but I simply could not have done it
alone. Thanks to Heikki and Rafael for ACPI insights, Shawn for testing
and feedback, Simon for providing ASL, Doug and Maxime for drm_panel
insights. Much appreciated!

Alas that's not all. While this has been tested to work on an ACPI
system, it has not been tested to not regress on DT systems. I wouldn't
dream of merging this before that, but we don't have such systems
handy. Could anyone provide their Tested-by on a DT system with panel
followers, please?


BR,
Jani.


Jani Nikula (4):
  drm/panel: use fwnode based lookups for panel followers
  drm/i915/panel: add panel register/unregister
  drm/i915/panel: register drm_panel and call prepare/unprepare for ICL+
    DSI
  drm/i915/panel: sync panel prepared state at register

 drivers/gpu/drm/drm_panel.c                   |  39 ++++--
 drivers/gpu/drm/i915/display/icl_dsi.c        |   4 +
 .../gpu/drm/i915/display/intel_connector.c    |  23 ++-
 .../drm/i915/display/intel_display_types.h    |   4 +
 drivers/gpu/drm/i915/display/intel_panel.c    | 131 ++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_panel.h    |   6 +
 6 files changed, 187 insertions(+), 20 deletions(-)

-- 
2.39.5