[PATCH v5 0/7] power: supply: max17040 support compatible devices

From: Iskren Chernev
Date: Tue Sep 22 2020 - 07:45:34 EST

The max17040 fuel gauge is part of a family of 8 chips that have very
similar mode of operations and registers.

This patch set adds:
- compatible strings for all supported devices and handles the minor
differences between them;
- handling for devices reporting double capacity via maxim,double-soc;
- handling for setting rcomp, a compensation value for more accurate
reading, affected by battery chemistry and operating temps;
- suppot for SOC alerts (capacity changes by +/- 1%), to prevent polling
every second;
- improved max17040 driver with regmap and devm_

The datasheets of the supported devices are linked [0] [1] [2] [3].

[0] https://datasheets.maximintegrated.com/en/ds/MAX17040-MAX17041.pdf
[1] https://datasheets.maximintegrated.com/en/ds/MAX17043-MAX17044.pdf
[2] https://datasheets.maximintegrated.com/en/ds/MAX17048-MAX17049.pdf
[3] https://datasheets.maximintegrated.com/en/ds/MAX17058-MAX17059.pdf

v4: https://lkml.org/lkml/2020/9/6/237
v3: https://lkml.org/lkml/2020/6/24/874
v2: https://lkml.org/lkml/2020/6/18/260
v1: https://lkml.org/lkml/2020/6/8/682

Changes from v4:
- fix warning reported by kernel test robot <lkp@xxxxxxxxx> for v4
patch 4/7
- ensure all patches have Sign-off-by matching author (was violated
for v4 patch 2/7)

Iskren Chernev (7):
power: supply: max17040: Use devm_ to automate remove
power: supply: max17040: Use regmap i2c
dt-bindings: power: supply: Extend max17040 compatibility
power: supply: max17040: Support compatible devices
dt-bindings: power: supply: max17040: Add maxim,rcomp
power: supply: max17040: Support setting rcomp
power: supply: max17040: Support soc alert

.../power/supply/max17040_battery.txt | 21 +-
drivers/power/supply/Kconfig | 11 +-
drivers/power/supply/max17040_battery.c | 489 ++++++++++++------
3 files changed, 367 insertions(+), 154 deletions(-)

base-commit: e64997027d5f171148687e58b78c8b3c869a6158