[PATCH v5 0/7] Add devcoredump support for DPU

[Abhinav Kumar <abhinavk@codeaurora.org>]

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

changes in v5:
 - move the storage of disp_state from dpu_kms to msm_kms
 - absorb snprintf into the snapshot core by accepting var args
 - initialize disp snapshot module even for non-DPU targets
 - split up the patches into dpu, dsi and dp pieces for easier review
 - get rid of MSM_DISP_SNAPSHOT_IN_* macros by simplifying function


Abhinav Kumar (7):
  drm: allow drm_atomic_print_state() to accept any drm_printer
  drm/msm: add support to take dpu snapshot
  drm/msm/dsi: add API to take DSI register snapshot
  drm/msm/dp: add API to take DP register snapshot
  drm/msm/disp/dpu1: add API to take DPU register snapshot
  drm/msm: add support to take dsi, dp and dpu snapshot
  drm/msm: add disp snapshot 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_encoder.c        |  16 +-
 .../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            |  50 ++++++
 drivers/gpu/drm/msm/disp/msm_disp_snapshot.c       | 161 +++++++++++++++++
 drivers/gpu/drm/msm/disp/msm_disp_snapshot.h       | 154 ++++++++++++++++
 drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c  | 195 +++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_catalog.c                |   9 +
 drivers/gpu/drm/msm/dp/dp_catalog.h                |   4 +
 drivers/gpu/drm/msm/dp/dp_display.c                |  29 +++
 drivers/gpu/drm/msm/dp/dp_display.h                |   1 +
 drivers/gpu/drm/msm/dsi/dsi.c                      |   5 +
 drivers/gpu/drm/msm/dsi/dsi.h                      |   5 +-
 drivers/gpu/drm/msm/dsi/dsi_host.c                 |  16 ++
 drivers/gpu/drm/msm/msm_drv.c                      |  27 ++-
 drivers/gpu/drm/msm/msm_drv.h                      |   2 +
 drivers/gpu/drm/msm/msm_kms.h                      |   7 +
 drivers/gpu/drm/selftests/test-drm_framebuffer.c   |   1 +
 23 files changed, 725 insertions(+), 19 deletions(-)
 create mode 100644 drivers/gpu/drm/msm/disp/msm_disp_snapshot.c
 create mode 100644 drivers/gpu/drm/msm/disp/msm_disp_snapshot.h
 create mode 100644 drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c

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