[PATCH v2 0/9] power: supply: max77693: Toggle charging/OTG based on extcon status

[Artur Weber]

This patchset does the following:

- Add CURRENT_MAX and INPUT_CURRENT_MAX power supply properties to
  expose the "fast charge current" (maximum current from charger to
  battery) and "CHGIN input current limit" (maximum current from
  external supply to charger).

- Add functions for toggling charging and OTG modes.

- Add an extcon-based handler that enables charging or OTG depending
  on the cable type plugged in. The extcon device to use for cable
  detection can be specified in the device tree, and is entirely
  optional.

The extcon listener implementation is inspired by the rt5033 charger
driver (commit 8242336dc8a8 ("power: supply: rt5033_charger: Add cable
detection and USB OTG supply")).

Signed-off-by: Artur Weber <aweber.kernel at gmail.com>
---
See v1 for old description:

https://lore.kernel.org/r/20240530-max77693-charger-extcon-v1-0-dc2a9e5bdf30@gmail.com
---
Changes in v2:
- Changed to use monitored-battery for charge current value
- Both current limit variables are now set by the CHARGER regulator
- Link to v1: https://lore.kernel.org/r/20240530-max77693-charger-extcon-v1-0-dc2a9e5bdf30@gmail.com

---
Artur Weber (9):
      dt-bindings: power: supply: max77693: Add monitored-battery property
      dt-bindings: power: supply: max77693: Add maxim,usb-connector property
      regulator: max77693: Set fast charge current in MAX77693 CHARGER regulator
      power: supply: max77693: Expose CURRENT_MAX property
      power: supply: max77693: Set charge current limits during init
      power: supply: max77693: Add USB extcon detection for enabling charging
      power: supply: max77693: Add support for detecting and enabling OTG
      ARM: dts: samsung: exynos4212-tab3: Add battery node with charge current value
      ARM: dts: samsung: exynos4212-tab3: Add USB connector node

 .../bindings/power/supply/maxim,max77693.yaml      |  15 ++
 arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi     |  19 ++
 drivers/power/supply/Kconfig                       |   1 +
 drivers/power/supply/max77693_charger.c            | 273 ++++++++++++++++++++-
 drivers/regulator/max77693-regulator.c             |  34 ++-
 include/linux/mfd/max77693-private.h               |  11 +
 6 files changed, 340 insertions(+), 13 deletions(-)
---
base-commit: a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6
change-id: 20240525-max77693-charger-extcon-9ebb7bad83ce

Best regards,
-- 
Artur Weber <aweber.kernel at gmail.com>