linux-kernel - [PATCH v3 0/3] drm/msm/dpu: Drop useless for-loop HW block lookup

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Date:   Wed, 26 Apr 2023 01:11:08 +0200
From:   Marijn Suijten <marijn.suijten@...ainline.org>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Martin Botka <martin.botka@...ainline.org>,
        Jami Kettunen <jami.kettunen@...ainline.org>,
        Jordan Crouse <jordan@...micpenguin.net>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Jessica Zhang <quic_jesszhan@...cinc.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>
Subject: [PATCH v3 0/3] drm/msm/dpu: Drop useless for-loop HW block lookup

Doing a for loop in every DPU HW block driver init to find a catalog
entry matching the given ID is rather useless if the init function
called by RM already has that catalog entry pointer, and uses exactly
its ID to drive this init and for loop.  Remove all that machinery to
drop quite some lines of unnecessarily-complicated code, and the
fallibility that comes with it, by simply giving _init() the catalog
entry pointers straight away.

Also clean up some unused struct members, and assign a log_mask for WB.

---
Changes in v3:
- Return NULL from dpu_hw_intf_init() on INTF_NONE, and omit identical
  check in dpu_rm_init();
- Retitle patch 3/3.

v2: https://lore.kernel.org/r/20230418-dpu-drop-useless-for-lookup-v2-0-acb08e82ef19@somainline.org

Changes in v2:
- Replace "sysfs" with "debugfs" in patch 2/3 description;
- Reorder WB log_mask fix as patch 1;
- Drop Fixes: tags from "unused struct members removal";
- Replace dpu_mdss_cfg parameter in dpu_hw_sspp_init() with immediate
  dpu_ubwc_cfg pointer;
- Replace dpu_mdss_cfg parameter in dpu_hw_ctl_init() with immediate
  dpu_lm_cfg array pointer.

v1: https://lore.kernel.org/r/20230418-dpu-drop-useless-for-lookup-v1-0-b9897ceb6f3e@somainline.org

---
Marijn Suijten (3):
      drm/msm/dpu: Assign missing writeback log_mask
      drm/msm/dpu: Drop unused members from HW structs
      drm/msm/dpu: Pass catalog pointers in RM to replace for-loop ID lookups

 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c        | 37 +++++---------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h        | 14 ++++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c        | 32 +++---------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h        | 11 +++---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c       | 38 ++++-----------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.h       | 12 +++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h |  2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c       | 41 ++++++-----------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h       | 13 +++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c         | 38 ++++-----------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.h         | 10 +++---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_merge3d.c    | 33 +++---------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_merge3d.h    | 14 ++++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c   | 33 +++---------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.h   | 14 ++++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c       | 40 ++++------------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h       | 14 ++++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_vbif.c       | 33 +++---------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_vbif.h       | 11 +++---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c         | 33 ++++--------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h         | 16 +++------
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c           | 17 +++++-----
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c            | 22 +++++-------
 23 files changed, 139 insertions(+), 389 deletions(-)
---
base-commit: f600e0bbde8562a06bee31b3eb1b69d49acac4c5
change-id: 20230418-dpu-drop-useless-for-lookup-488700c7a469

Best regards,
-- 
Marijn Suijten <marijn.suijten@...ainline.org>