[v4,00/23] MediaTek clocks cleanups and improvements

  Changes in v4:
 - Exported cg_regs_dummy to fix modpost issues with mt8173 drivers
 - Changed mtk_register_reset_controller() to _with_dev() variant
   to fix last modpost issues
 - Added Miles' Tested-by tags on all commits touching mt6779/8192

Changes in v3:
 - Moved struct device pointer as first member in all commits
   adding propagation of it
 - Fixed some indentation issues as pointed out by strict checkpatch
 - Tested again to make sure that nothing went wrong in the
   process :-)

Changes in v2:
 - Moved dt-bindings CLK_DUMMY to clk-mtk.h instead


This series performs cleanups and improvements on MediaTek clock
drivers, greatly reducing code duplication (hence also reducing
kernel size).

There would be a lot to say about it, but summarizing:

* Propagates struct device where possible in order to introduce the
  possibility of using Runtime PM on clock drivers as needed,
  possibly enhancing reliability of some platforms (obviously, this
  will do nothing unless power-domains are added to devicetree);

* Cleans up some duplicated clock(s) registration attempt(s): on
  some platforms the 26M fixed factor clock is registered early,
  but then upon platform_driver probe, an attempt to re-register
  that clock was performed;

* Removes some early clock registration where possible, moving
  everything to platform_driver clock probe;

* Breaks down the big MT8173 clock driver in multiple ones, as it's
  already done with the others, cleans it up and adds possibility
  possibility to compile non-boot-critical clock drivers (for 8173)
  as modules;

* Extends the common mtk_clk_simple_probe() function to be able to
  register multiple MediaTek clock types;

* Removes duplicated [...]_probe functions from multiple MediaTek SoC
  clock drivers, migrating almost everything to the common functions
  mtk_clk_simple_probe();

* Adds a .remove() callback, pointing to the common mtk_clk_simple_remove()
  function to all clock drivers that were migrated to the common probe;

* Some more spare cleanups here and there.

All of this was manually tested on various Chromebooks (with different MTK
SoCs) and no regression was detected.

Cheers!

AngeloGioacchino Del Regno (23):
  clk: mediatek: mt8192: Correctly unregister and free clocks on failure
  clk: mediatek: mt8192: Propagate struct device for gate clocks
  clk: mediatek: clk-gate: Propagate struct device with
    mtk_clk_register_gates()
  clk: mediatek: cpumux: Propagate struct device where possible
  clk: mediatek: clk-mtk: Propagate struct device for composites
  clk: mediatek: clk-mux: Propagate struct device for mtk-mux
  clk: mediatek: clk-mtk: Add dummy clock ops
  clk: mediatek: mt8173: Migrate to platform driver and common probe
  clk: mediatek: mt8173: Remove mtk_clk_enable_critical()
  clk: mediatek: mt8173: Break down clock drivers and allow module build
  clk: mediatek: Switch to mtk_clk_simple_probe() where possible
  clk: mediatek: clk-mtk: Extend mtk_clk_simple_probe()
  clk: mediatek: mt8173: Migrate pericfg/topckgen to
    mtk_clk_simple_probe()
  clk: mediatek: clk-mt8192: Move CLK_TOP_CSW_F26M_D2 in top_divs
  clk: mediatek: mt8192: Join top_adj_divs and top_muxes
  clk: mediatek: mt8186: Join top_adj_div and top_muxes
  clk: mediatek: clk-mt8183: Join top_aud_muxes and top_aud_divs
  clk: mediatek: clk-mtk: Register MFG notifier in
    mtk_clk_simple_probe()
  clk: mediatek: clk-mt8192: Migrate topckgen to mtk_clk_simple_probe()
  clk: mediatek: clk-mt8186-topckgen: Migrate to mtk_clk_simple_probe()
  clk: mediatek: clk-mt6795-topckgen: Migrate to mtk_clk_simple_probe()
  clk: mediatek: clk-mt7986-topckgen: Properly keep some clocks enabled
  clk: mediatek: clk-mt7986-topckgen: Migrate to mtk_clk_simple_probe()

 drivers/clk/mediatek/Kconfig                 |   32 +-
 drivers/clk/mediatek/Makefile                |    6 +-
 drivers/clk/mediatek/clk-cpumux.c            |    8 +-
 drivers/clk/mediatek/clk-cpumux.h            |    2 +-
 drivers/clk/mediatek/clk-gate.c              |   23 +-
 drivers/clk/mediatek/clk-gate.h              |    7 +-
 drivers/clk/mediatek/clk-mt2701-aud.c        |   31 +-
 drivers/clk/mediatek/clk-mt2701-eth.c        |   36 +-
 drivers/clk/mediatek/clk-mt2701-g3d.c        |   56 +-
 drivers/clk/mediatek/clk-mt2701-hif.c        |   38 +-
 drivers/clk/mediatek/clk-mt2701-mm.c         |    4 +-
 drivers/clk/mediatek/clk-mt2701.c            |   24 +-
 drivers/clk/mediatek/clk-mt2712-mm.c         |    4 +-
 drivers/clk/mediatek/clk-mt2712.c            |   99 +-
 drivers/clk/mediatek/clk-mt6765.c            |   13 +-
 drivers/clk/mediatek/clk-mt6779-mm.c         |    4 +-
 drivers/clk/mediatek/clk-mt6779.c            |   59 +-
 drivers/clk/mediatek/clk-mt6795-infracfg.c   |    6 +-
 drivers/clk/mediatek/clk-mt6795-mm.c         |    3 +-
 drivers/clk/mediatek/clk-mt6795-pericfg.c    |    6 +-
 drivers/clk/mediatek/clk-mt6795-topckgen.c   |   84 +-
 drivers/clk/mediatek/clk-mt6797-mm.c         |    4 +-
 drivers/clk/mediatek/clk-mt6797.c            |    7 +-
 drivers/clk/mediatek/clk-mt7622-aud.c        |   54 +-
 drivers/clk/mediatek/clk-mt7622-eth.c        |   82 +-
 drivers/clk/mediatek/clk-mt7622-hif.c        |   85 +-
 drivers/clk/mediatek/clk-mt7622.c            |   26 +-
 drivers/clk/mediatek/clk-mt7629-eth.c        |    7 +-
 drivers/clk/mediatek/clk-mt7629-hif.c        |   85 +-
 drivers/clk/mediatek/clk-mt7629.c            |   22 +-
 drivers/clk/mediatek/clk-mt7986-eth.c        |   10 +-
 drivers/clk/mediatek/clk-mt7986-infracfg.c   |    7 +-
 drivers/clk/mediatek/clk-mt7986-topckgen.c   |  100 +-
 drivers/clk/mediatek/clk-mt8135.c            |   18 +-
 drivers/clk/mediatek/clk-mt8167-aud.c        |    2 +-
 drivers/clk/mediatek/clk-mt8167-img.c        |    2 +-
 drivers/clk/mediatek/clk-mt8167-mfgcfg.c     |    2 +-
 drivers/clk/mediatek/clk-mt8167-mm.c         |    4 +-
 drivers/clk/mediatek/clk-mt8167-vdec.c       |    3 +-
 drivers/clk/mediatek/clk-mt8167.c            |   12 +-
 drivers/clk/mediatek/clk-mt8173-apmixedsys.c |  157 +++
 drivers/clk/mediatek/clk-mt8173-img.c        |   55 +
 drivers/clk/mediatek/clk-mt8173-infracfg.c   |  155 +++
 drivers/clk/mediatek/clk-mt8173-mm.c         |   22 +-
 drivers/clk/mediatek/clk-mt8173-pericfg.c    |  122 ++
 drivers/clk/mediatek/clk-mt8173-topckgen.c   |  653 ++++++++++
 drivers/clk/mediatek/clk-mt8173-vdecsys.c    |   57 +
 drivers/clk/mediatek/clk-mt8173-vencsys.c    |   64 +
 drivers/clk/mediatek/clk-mt8173.c            | 1125 ------------------
 drivers/clk/mediatek/clk-mt8183-audio.c      |   27 +-
 drivers/clk/mediatek/clk-mt8183-mm.c         |    4 +-
 drivers/clk/mediatek/clk-mt8183.c            |  130 +-
 drivers/clk/mediatek/clk-mt8186-mcu.c        |    3 +-
 drivers/clk/mediatek/clk-mt8186-mm.c         |    3 +-
 drivers/clk/mediatek/clk-mt8186-topckgen.c   |  112 +-
 drivers/clk/mediatek/clk-mt8192-aud.c        |   30 +-
 drivers/clk/mediatek/clk-mt8192-mm.c         |    3 +-
 drivers/clk/mediatek/clk-mt8192.c            |  182 +--
 drivers/clk/mediatek/clk-mt8195-apmixedsys.c |    3 +-
 drivers/clk/mediatek/clk-mt8195-topckgen.c   |    9 +-
 drivers/clk/mediatek/clk-mt8195-vdo0.c       |    3 +-
 drivers/clk/mediatek/clk-mt8195-vdo1.c       |    3 +-
 drivers/clk/mediatek/clk-mt8365-mm.c         |    5 +-
 drivers/clk/mediatek/clk-mt8365.c            |   14 +-
 drivers/clk/mediatek/clk-mt8516-aud.c        |    2 +-
 drivers/clk/mediatek/clk-mt8516.c            |   12 +-
 drivers/clk/mediatek/clk-mtk.c               |  136 ++-
 drivers/clk/mediatek/clk-mtk.h               |   35 +-
 drivers/clk/mediatek/clk-mux.c               |   14 +-
 drivers/clk/mediatek/clk-mux.h               |    3 +-
 70 files changed, 2041 insertions(+), 2179 deletions(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8173-apmixedsys.c
 create mode 100644 drivers/clk/mediatek/clk-mt8173-img.c
 create mode 100644 drivers/clk/mediatek/clk-mt8173-infracfg.c
 create mode 100644 drivers/clk/mediatek/clk-mt8173-pericfg.c
 create mode 100644 drivers/clk/mediatek/clk-mt8173-topckgen.c
 create mode 100644 drivers/clk/mediatek/clk-mt8173-vdecsys.c
 create mode 100644 drivers/clk/mediatek/clk-mt8173-vencsys.c
 delete mode 100644 drivers/clk/mediatek/clk-mt8173.c
  

Quoting AngeloGioacchino Del Regno (2023-01-20 01:20:30)
> 
> * Some more spare cleanups here and there.
> 
> All of this was manually tested on various Chromebooks (with different MTK
> SoCs) and no regression was detected.
> 

Do you want me to pick this up directly? Or is there some mediatek
maintainer willing to send me a PR? If I don't hear anything soon I'll
go sweep my inbox for mediatek clk patches and start applying them.
  

Quoting Stephen Boyd (2023-01-25 15:09:40)
> Quoting AngeloGioacchino Del Regno (2023-01-20 01:20:30)
> > 
> > * Some more spare cleanups here and there.
> > 
> > All of this was manually tested on various Chromebooks (with different MTK
> > SoCs) and no regression was detected.
> > 
> 
> Do you want me to pick this up directly? Or is there some mediatek
> maintainer willing to send me a PR? If I don't hear anything soon I'll
> go sweep my inbox for mediatek clk patches and start applying them.

I applied them all locally and will push out to next soonish.