[PATCH v3 00/25] drm/msm/dsi: refactor MSM DSI PHY/PLL drivers

[Dmitry Baryshkov <dmitry.baryshkov@linaro.org>]

Restructure MSM DSI PHY drivers. What started as an attempt to grok the
overcomplicated PHY drivers, has lead up to the idea of merging PHY and
PLL code, reducing abstractions, code duplication, dropping dead code,
etc.

The patches were mainly tested on RB5 (sm8250, 7nm) and DB410c (apq8016,
28nm-lp) and lightly tested on RB3 (sdm845, 10nm).

The patch 'clk: fixed: add devm helper for clk_hw_register_fixed_factor()'
is already a part of mainline as of 5.12-rc1, but is included here for
completeness to fix compilation issues (as msm-next is based on 5.11-rc5).

Changes since v2:
 - Drop the 'stop setting clock parents manually' patch for now together
   with the dtsi changes. Unlike the rest of patchset it provides
   functional changes and might require additional discussion.
   The patchset will be resubmitted later.

Changes since v1:
 - Rebase on top of msm/msm-next
 - Reorder patches to follow logical sequence
 - Add sc7180 clocks assignment
 - Drop sm8250 clocks assignment, as respective file is not updated in
   msm/msm-next

Changes since RFC:
 - Reorder patches to move global clock patches in the beginning and
   dtsi patches where they are required.
 - remove msm_dsi_phy_set_src_pll() and guess src_pll_id using PHY usecase.

The following changes since commit 627dc55c273dab308303a5217bd3e767d7083ddb:

  drm/msm/disp/dpu1: icc path needs to be set before dpu runtime resume (2021-03-22 18:52:34 -0700)

are available in the Git repository at:

  https://git.linaro.org/people/dmitry.baryshkov/kernel.git dsi-phy-3

for you to fetch changes up to da7ba6797b2899a78774fb89e586e79a1001eff4:

  drm/msm/dsi: stop passing src_pll_id to the phy_enable call (2021-03-27 13:56:26 +0300)

----------------------------------------------------------------
Daniel Palmer (1):
      clk: fixed: add devm helper for clk_hw_register_fixed_factor()

Dmitry Baryshkov (24):
      clk: mux: provide devm_clk_hw_register_mux()
      clk: divider: add devm_clk_hw_register_divider
      drm/msm/dsi: replace PHY's init callback with configurable data
      drm/msm/dsi: fuse dsi_pll_* code into dsi_phy_* code
      drm/msm/dsi: drop multiple pll enable_seq support
      drm/msm/dsi: move all PLL callbacks into PHY config struct
      drm/msm/dsi: drop global msm_dsi_phy_type enumaration
      drm/msm/dsi: move min/max PLL rate to phy config
      drm/msm/dsi: remove msm_dsi_pll_set_usecase
      drm/msm/dsi: push provided clocks handling into a generic code
      drm/msm/dsi: use devm_clk_*register to registe DSI PHY clocks
      drm/msm/dsi: use devm_of_clk_add_hw_provider
      drm/msm/dsi: make save/restore_state phy-level functions
      drm/msm/dsi: drop vco_delay setting from 7nm, 10nm, 14nm drivers
      drm/msm/dpu: simplify vco_delay handling in dsi_phy_28nm driver
      drm/msi/dsi: inline msm_dsi_pll_helper_clk_prepare/unprepare
      drm/msm/dsi: make save_state/restore_state callbacks accept msm_dsi_phy
      drm/msm/dsi: drop msm_dsi_pll abstracton
      drm/msm/dsi: drop PLL accessor functions
      drm/msm/dsi: move ioremaps to dsi_phy_driver_probe
      drm/msm/dsi: remove duplicate fields from dsi_pll_Nnm instances
      drm/msm/dsi: remove temp data from global pll structure
      drm/msm/dsi: inline msm_dsi_phy_set_src_pll
      drm/msm/dsi: stop passing src_pll_id to the phy_enable call

 drivers/clk/clk-fixed-factor.c                  |   39 +-
 drivers/clk/clk-mux.c                           |   35 +
 drivers/gpu/drm/msm/Kconfig                     |    8 -
 drivers/gpu/drm/msm/Makefile                    |    9 -
 drivers/gpu/drm/msm/dsi/dsi.h                   |   60 +-
 drivers/gpu/drm/msm/dsi/dsi_host.c              |    4 +-
 drivers/gpu/drm/msm/dsi/dsi_manager.c           |   30 +-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy.c           |  161 ++--
 drivers/gpu/drm/msm/dsi/phy/dsi_phy.h           |   41 +-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c      |  745 ++++++++++++++-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c      |  939 ++++++++++++++++++-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c      |   16 +-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c      |  654 +++++++++++++-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c |  479 +++++++++-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c       |  772 +++++++++++++++-
 drivers/gpu/drm/msm/dsi/pll/dsi_pll.c           |  184 ----
 drivers/gpu/drm/msm/dsi/pll/dsi_pll.h           |  132 ---
 drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c      |  881 ------------------
 drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c      | 1096 -----------------------
 drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c      |  643 -------------
 drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c |  526 -----------
 drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c       |  913 -------------------
 include/linux/clk-provider.h                    |   34 +-
 23 files changed, 3732 insertions(+), 4669 deletions(-)
 delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
 delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
 delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c
 delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c
 delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c
 delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c
 delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c