[RFC PATCH 0/7] Simplify and correct msm/dp bridge implementation

[Dmitry Baryshkov]

I noticed that commit 8a3b4c17f863 ("drm/msm/dp: employ bridge mechanism for display
enable and disable") conflicts with the panel-edp (panel bridge)
support. Both bridges will try to attach directly to the drm encoder
itself. I started writing lengthy letter describing what is broken and
how it should be fixed. Then at some point I stopped and quickly coded
this RFC (which is compile-tested only).

Comments and tests (on both DP and eDP setups) are more than welcome.

The following changes since commit 6ed95285382d6f90a3c3a11d5806a5eb7db715c3:

  drm/msm/a5xx: Fix missing CP_PROTECT for SMMU on A540 (2021-12-17 15:09:46 -0800)

are available in the Git repository at:

  https://git.linaro.org/people/dmitry.baryshkov/kernel.git msm-dp-bridges

for you to fetch changes up to 7eff304d50ba520e9193a293a8e42bbd9d7aa0e1:

  drm/msm/dp: stop carying about the connector type (2022-01-07 04:56:06 +0300)

----------------------------------------------------------------
Dmitry Baryshkov (7):
      drm/msm/dp: fix panel bridge attachment
      drm/msm/dp: support attaching bridges to the DP encoder
      drm/msm/dp: replace dp_connector with drm_bridge_connector
      drm/msm/dp: remove extra wrappers and public functions
      drm/msm/dp: remove unused stubs
      drm/msm/dp: remove dp_display_en/disable prototypes and data argument
      drm/msm/dp: stop carying about the connector type

 drivers/gpu/drm/msm/Makefile        |   1 -
 drivers/gpu/drm/msm/dp/dp_display.c | 263 ++++++++++++++++++++++++++----------
 drivers/gpu/drm/msm/dp/dp_display.h |   5 +-
 drivers/gpu/drm/msm/dp/dp_drm.c     | 250 ----------------------------------
 drivers/gpu/drm/msm/dp/dp_parser.c  |  28 ++--
 drivers/gpu/drm/msm/dp/dp_parser.h  |   4 +-
 drivers/gpu/drm/msm/msm_drv.h       |  32 +----
 7 files changed, 203 insertions(+), 380 deletions(-)
 delete mode 100644 drivers/gpu/drm/msm/dp/dp_drm.c