[v7,0/5] power: supply: MAX17040: Add IRQ for low level and alert SOC changes

Message

Matheus Castello Nov. 17, 2019, 2:13 p.m. UTC

This series add IRQ handler for low level SOC alert, define a devicetree
binding attribute to configure the alert level threshold and check for
changes in SOC and power supply status for send uevents.

Max17043/17044 have a pin for alert host about low level state of charge and
this alert can be configured in a threshold from 1% up to 32% of SOC.

Tested on Toradex Colibri iMX7D, with a SparkFun Lipo Fuel Gauge module
based on MAXIM MAX17043.

Thanks Krzysztof Kozlowski, Lee Jones and Rob Herring for your time reviewing
it.

Changes since v6:
(Suggested by Lee Jones)
- Use relative paths in documentation

Changes since v5:
(Suggested by Krzysztof Kozlowski)
- Rearrange code and add max17040_enable_alert_irq on patch 1/5
- Remove useless dev_info

Matheus Castello (5):
  power: supply: max17040: Add IRQ handler for low SOC alert
  dt-bindings: power: supply: Max17040: Add DT bindings for max17040
    fuel gauge
  devicetree: mfd: max14577: Add reference to max14040_battery.txt
    descriptions
  power: supply: max17040: Config alert SOC low level threshold from FDT
  power: supply: max17040: Send uevent in SOC and status change

 .../devicetree/bindings/mfd/max14577.txt      |   2 +
 .../power/supply/max17040_battery.txt         |  33 ++++
 drivers/power/supply/max17040_battery.c       | 141 +++++++++++++++++-
 3 files changed, 171 insertions(+), 5 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/power/supply/max17040_battery.txt

--
2.24.0.rc2