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[0/6,v4] AB8500 charging, the final steps

Message ID 20220225232800.2021909-1-linus.walleij@linaro.org
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Series AB8500 charging, the final steps | expand

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Linus Walleij Feb. 25, 2022, 11:27 p.m. UTC 
Samsung Galaxy Ace 2
Samsung Galaxy S Advance
Samsung Galaxy S III mini
Samsung Galaxy Xcover 2
Samsung Galaxy Beam
Samsung Galaxy Exhibit
Samsung Galaxy Amp

The steps are as follows:

- Add charging setting for maintenance charging in two steps.
  After this we fall back to discharging to the restart threshold.

- Add optional alert mode charging when the battery is alert warm
  or cold, so as to mitigate the condition. I suspect mostly the
  battery gets alert warm and then this will pull down the charging
  current a bit.

- Add BTI (Battery Type Indicator) resistance fields.

- Add VBAT-to-Ri internal resistance look-up and interpolation.
  Samsung seem to use this on all the Samsung SDI battery
  charging code I have seen.

- Add the static data for all the Samsung batteries and detect
  them from compatible property.

All of this is enabled in the AB8500 simultaneously so for each
new feature a user is introduced.

ChangeLog v3->v4:
- Rebase on Sebastians linux-power-supply tree.
- Fix a small bug in the Samsung static data.

ChangeLog v2->v3:
- Collect Matti's review tags
- Fix up Samsung battery data tables

ChangeLog v1->v2:
- Address review comments
- Split alert charging mode in one for low resp high temp
- Fix build errors with Samsung static data


Linus Walleij (6):
  power: supply: ab8500: Standardize maintenance charging
  power: supply: ab8500: Standardize alert mode charging
  power: supply: ab8500: Standardize BTI resistance
  power: supply: Support VBAT-to-Ri lookup tables
  power: supply: ab8500_fg: Use VBAT-to-Ri if possible
  power: supply: Static data for Samsung batteries

 drivers/power/supply/Kconfig               |   6 +
 drivers/power/supply/Makefile              |   1 +
 drivers/power/supply/ab8500-bm.h           |  30 -
 drivers/power/supply/ab8500_bmdata.c       |  52 +-
 drivers/power/supply/ab8500_btemp.c        |  14 +-
 drivers/power/supply/ab8500_chargalg.c     |  89 +-
 drivers/power/supply/ab8500_fg.c           |  35 +-
 drivers/power/supply/power_supply_core.c   | 116 ++-
 drivers/power/supply/samsung-sdi-battery.c | 919 +++++++++++++++++++++
 drivers/power/supply/samsung-sdi-battery.h |  13 +
 include/linux/power_supply.h               | 207 ++++-
 11 files changed, 1386 insertions(+), 96 deletions(-)
 create mode 100644 drivers/power/supply/samsung-sdi-battery.c
 create mode 100644 drivers/power/supply/samsung-sdi-battery.h