[PATCH v4 0/6] Add support to print sub-block registers in dpu hw catalog

[Ryan McCann]

The purpose of this patch series is to add support to print the registers
of sub-blocks in the DPU hardware catalog and fix the order in which all
hardware blocks are dumped for a device core dump. This involves:

1. Changing data structure from stack to queue to fix the printing order
of the device core dump.

2. Removing redundant suffix of sub-block names.

3. Removing redundant prefix of sub-block names.

4. Eliminating unused variable from relevant macros.

5. Defining names for sub-blocks that have not yet been defined.

6. Implementing wrapper function that prints the registers of sub-blocks
when there is a need.

Sample Output of the sspp_0 block and its sub-blocks for devcore dump:
======sspp_0======
...registers
...
====sspp_0_scaler====
...
...
====sspp_0_csc====
...
...
====next_block====
...

---
Changes in v4:
- Added review tags
- Link to v3: https://lore.kernel.org/r/20230622-devcoredump_patch-v3-0-83601b72eb67@quicinc.com

Changes in v3:
- Split sub-block changes and main block changes into two commits
- Corrected typo in comment located in DSC for loop block
- Eliminated variables mmio and base
- Dropped unnecessary "%s"
- Link to v2: https://lore.kernel.org/r/20230622-devcoredump_patch-v2-0-9e90a87d393f@quicinc.com

Changes in v2:
- Changed spelling "sub block" to "sub-block" or "sblk".
- Capitalized DPU.
- Eliminated multiplexer/wrapper function. Inlined instead.
- Changed if statements from feature checks to length checks.
- Squashed prefix and suffix patch into one.
- Link to v1: https://lore.kernel.org/r/20230622-devcoredump_patch-v1-0-3b2cdcc6a576@quicinc.com

---
Ryan McCann (6):
      drm/msm: Update dev core dump to not print backwards
      drm/msm/dpu: Drop unused num argument from relevant macros
      drm/msm/dpu: Define names for unnamed sblks
      drm/msm/dpu: Remove redundant prefix/suffix in name of sub-blocks
      drm/msm/dpu: Refactor printing of main blocks in device core dump
      drm/msm/dpu: Update dev core dump to dump registers of sub-blocks

 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c    | 90 +++++++++++-----------
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c           | 94 ++++++++++++++++++-----
 drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c |  2 +-
 3 files changed, 120 insertions(+), 66 deletions(-)
---
base-commit: a0364260213c96f6817f7e85cdce293cb743460f
change-id: 20230622-devcoredump_patch-df7e8f6fd632

Best regards,
-- 
Ryan McCann <quic_rmccann at quicinc.com>