[PATCH v3 0/3] Add devcoredump support for DPU

[Abhinav Kumar]

This series adds support to use devcoredump for DPU driver. It introduces
the dpu_dbg module which assists in the capturing of register dumps during
error scenarios. When a display related error happens, the dpu_dbg module
captures all the relevant register dumps along with the snapshot of the drm
atomic state and triggers a devcoredump.

changes in v3:
 - Get rid of registration mechanism for sub-modules and instead get
   this information from the dpu catalog itself
 - Get rid of global dpu_dbg struct and instead store it in dpu_kms
 - delegate the power management of the sub-modules to the resp drivers
 - refactor and remove the linked list logic and simplify it to have
   just an array


Abhinav Kumar (3):
  drm: allow drm_atomic_print_state() to accept any drm_printer
  drm/msm/dpu: add support to dump dpu registers
  drm/msm/dpu: add dpu_dbg points across dpu driver

 drivers/gpu/drm/drm_atomic.c                       |  28 ++-
 drivers/gpu/drm/drm_atomic_uapi.c                  |   4 +-
 drivers/gpu/drm/drm_crtc_internal.h                |   4 +-
 drivers/gpu/drm/msm/Makefile                       |   2 +
 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c            | 221 ++++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.h            | 200 ++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c       | 257 +++++++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c        |  18 +-
 .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c   |  14 +-
 .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c   |   8 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h     |   2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c            |  86 +++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h            |   5 +
 drivers/gpu/drm/msm/dp/dp_catalog.c                |  10 +
 drivers/gpu/drm/msm/dp/dp_catalog.h                |   5 +
 drivers/gpu/drm/msm/dp/dp_display.c                |  37 +++
 drivers/gpu/drm/msm/dp/dp_display.h                |   1 +
 drivers/gpu/drm/msm/dsi/dsi.c                      |   5 +
 drivers/gpu/drm/msm/dsi/dsi.h                      |   4 +
 drivers/gpu/drm/msm/dsi/dsi_host.c                 |  25 ++
 drivers/gpu/drm/msm/msm_drv.c                      |  29 ++-
 drivers/gpu/drm/msm/msm_drv.h                      |   2 +
 drivers/gpu/drm/selftests/test-drm_framebuffer.c   |   1 +
 23 files changed, 950 insertions(+), 18 deletions(-)
 create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c
 create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.h
 create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c

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