Merge tag 'regmap-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "This is a much bigger change for regmap than is normal, the main
  things being the addition of some KUnit coverage and a maple tree
  based register cache which longer term is likely to replace the rbtree
  cache except possibly for very small register maps.

  While it's complete overkill for most applications the code for maple
  trees is there and there are some larger, sparser devices where the
  data structure is a better fit.

  The maple tree support is still a work in progress but already useful,
  there's some conversions of drivers ready to go after the merge
  window.

  Summary:

   - Support for shifting register addresses up as well as down, there's
     a use cases with memory mapped MDIO.

   - Refactoring of the type configuration in regmap-irq to allow access
     to driver data in the handler, needed by some GPIO devices.

   - Some initial KUnit coverage, the bulk of the driver facing API is
     covered but there's holes and things like the data marshalling for
     bytestream buses are just not covered in the slightest.

   - Removal of the compressed cache type, it had zero users and was
     getting in the way of KUnit.

   - Addition of a maple tree based register cache, there's more work to
     do but it's already useful for some devices with a flatter data
     structure than rbtree and getting to use all the optimisation work
     Liam is doing"

* tag 'regmap-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: allow upshifting register addresses before performing operations
  regmap: Pass irq_drv_data as a parameter for set_type_config()
  regmap: Use mas_walk() instead of mas_find()
  regmap: Fix double unlock in the maple cache
  regmap: Add maple tree based register cache
  regmap: Factor out single value register syncing
  regmap: Add some basic kunit tests
  regmap: Add RAM backed register map
  regmap: Removed compressed cache support
  regmap: Support paging for buses with reg_read()/reg_write()
  regmap: Clarify error for unknown cache types
  regmap: Handle sparse caches in the default sync
  regmap: add a helper to translate the register address
  regmap: cache: Silence checkpatch warning
  regmap: cache: Return error in cache sync operations for REGCACHE_NONE
  regmap-irq: Place kernel doc of struct regmap_irq_chip in order
  regmap-irq: Add no_status support
  regmap: sdw: Remove 8-bit value size restriction
  regmap: sdw: Update misleading comment

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