[PATCH v4 00/15] Add support for AXP192 PMIC

[Aidan MacDonald <aidanmacdonald.0x0@gmail.com>]

Changes in v4:

* Drop regmap-irq patches and rebase on top of the regmap-irq
  refactoring series[1], which implements the same functionality.
* Reorder mfd_cells, putting one-line entries at the bottom.
* Fix incorrect example in axp192-gpio device tree bindings.
* Perform adc_en2 flag -> adc_en2_mask conversion in axp20x_adc
  as a separate patch.
* Simplify axp192_usb_power_set_current_max().
* Drop unneeded OF dependency in pin control driver, and document
  tables used for describing register layouts.
* Various style fixups suggested by Andy Shevchenko.

[1]: https://lore.kernel.org/lkml/20220623211420.918875-1-aidanmacdonald.0x0@gmail.com/

Changes in v3:

* Update pinctrl driver to address Andy Shevchenko's review comments
  from v1, and fix a few other issues.
* Add gpio-ranges property and example snippet to gpio DT bindings.
* Update commit message of patch 01/16 to point out that all register
  addresses are obtained using sub_irq_reg().
* Document ccc_table in axp20x_battery. Also update commit message to
  note a small fix that is part of that patch.
* Drop axp20x_adc consolidation patch in favor of using separate adc_raw
  functions. It's a minor code size optimization that may not be worth
  the effort due to implementation complexity.
* Use the FIELD_GET macro in axp20x_adc to further clarify intent.
* Fix a typo in the regulator driver where an AXP20X regulator ID was
  mistakenly used instead of an AXP192 regulator ID. Also carry over
  an Acked-by: tag from v1. Hope that's okay.
* Accumulate Acked-by: tags from v1 on DT patches.
* Accumulate Acked-by: tags from v2.

Note that regmap maintainer Mark Brown has said the first two patches to
regmap-irq aren't suitable for inclusion into the kernel in their current
state. I'm including them for v3 so the series remains testable.

Changes in v2:

* Do a little cleanup of axp20x_adc suggested by Jonathan Cameron
* Consolidate ADC read functions in axp20x_adc
* Drop the axp192's read_label callback in axp20x_adc
* Clean up the axp192-gpio dt bindings
* Rewrite a problematic bit of code in axp20x_usb_power reported
  by kernel test robot
* Support AXP192 in axp20x_battery
* Split up regmap-irq changes to two separate patches

Cover letter from v1:

Hi all,

This patch series adds support for the X-Powers AXP192 PMIC to the
AXP20x driver framework.

The first patch is a small change to regmap-irq to support the AXP192's
unusual IRQ register layout. It isn't possible to include all of the
IRQ registers in one regmap-irq chip without this.

The rest of the changes are pretty straightforward, I think the only
notable parts are the axp20x_adc driver where there seems to be some
opportunities for code reuse (the axp192 is nearly a duplicate of the
axp20x) and the addition of a new pinctrl driver for the axp192, since
the axp20x pinctrl driver was not very easy to adapt.

Aidan MacDonald (15):
  dt-bindings: mfd: add bindings for AXP192 MFD device
  dt-bindings: iio: adc: axp209: Add AXP192 compatible
  dt-bindings: power: supply: axp20x: Add AXP192 compatible
  dt-bindings: gpio: Add AXP192 GPIO bindings
  dt-bindings: power: axp20x-battery: Add AXP192 compatible
  mfd: axp20x: Add support for AXP192
  regulator: axp20x: Add support for AXP192
  iio: adc: axp20x_adc: Minor code cleanups
  iio: adc: axp20x_adc: Replace adc_en2 flag with adc_en2_mask field
  iio: adc: axp20x_adc: Add support for AXP192
  power: supply: axp20x_usb_power: Add support for AXP192
  pinctrl: Add AXP192 pin control driver
  power: axp20x_battery: Add constant charge current table
  power: axp20x_battery: Support battery status without fuel gauge
  power: axp20x_battery: Add support for AXP192

 .../bindings/gpio/x-powers,axp192-gpio.yaml   |  68 ++
 .../bindings/iio/adc/x-powers,axp209-adc.yaml |  18 +
 .../bindings/mfd/x-powers,axp152.yaml         |   1 +
 .../x-powers,axp20x-battery-power-supply.yaml |   1 +
 .../x-powers,axp20x-usb-power-supply.yaml     |   1 +
 drivers/iio/adc/axp20x_adc.c                  | 356 +++++++++--
 drivers/mfd/axp20x-i2c.c                      |   2 +
 drivers/mfd/axp20x.c                          | 152 +++++
 drivers/pinctrl/Kconfig                       |  13 +
 drivers/pinctrl/Makefile                      |   1 +
 drivers/pinctrl/pinctrl-axp192.c              | 598 ++++++++++++++++++
 drivers/power/supply/axp20x_battery.c         | 142 ++++-
 drivers/power/supply/axp20x_usb_power.c       |  84 ++-
 drivers/regulator/axp20x-regulator.c          | 100 ++-
 include/linux/mfd/axp20x.h                    |  84 +++
 15 files changed, 1547 insertions(+), 74 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/x-powers,axp192-gpio.yaml
 create mode 100644 drivers/pinctrl/pinctrl-axp192.c

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2.35.1