Support ROHM BD99954 Battery Management IC
ROHM BD99954 is a Battery Management IC for 1-4 cell Lithium-Ion
secondary battery. BD99954 is intended to be used in space-constraint
equipment such as Low profile Notebook PC, Tablets and other
applications.
Series extracts a "linear ranges" helper out of the regulator
framework. Linear ranges helper is intended to help converting
real-world values to register values when conversion is linear. I
suspect this is usefull also for power subsystem and possibly for clk.
This version of series introduces new battry DT binding entries and
adds the parsing in power_supply_get_battery_info(). These properties
can be converted to ROHM specific properties and parsing can be moved
to the BD99954 driver if this does not seem like a right thing to do.
I just have a feeling the the BD99954 is not the only charger which
could utilize these.
We also add ROHM specific charger parameters for limiting the input
current(s). I think these parameters are pretty common and maybe the
"rohm,"-prefix should be dropped and we should try having common
input limiting properties for different chips?
Series is based on v5.5-rc7
Changelog RFC-v3:
DT-bindings:
- fix the BD99954 binding (the *-microvolt Vs. *-microvolts issue is
still there. Not sure which one is correct)
- renabe tricklecharge-* binding to trickle-charge-* as suggested by
Rob.
- drop the linear-ranges helper which was written for BD70528 and
extract the linear-range code from regulator framework instead.
- refactor regulator framework to utilize extracted linear-ranges
code.
- change the struct regulator_linear_range to linear_range from
regulator drivers.
- refactor BD70528 to use regulator framework originated
linear-ranges code.
- change BD99954 to use linear-ranges code from regulator framework
Changelog RFC-v2:
DT-bindings:
- Used the battery parameters described in battery.txt
- Added few new parameters to battery.txt
- Added ASCII art charging profile chart for BD99954 to explain
states and limits.
Linear ranges:
- Fixed division by zero error from linear-ranges code if step 0 is
used.
Power-supply core:
- Added parsing of new battery parameters.
BD99954 driver:
- converted to use battery parameters from battery node
- Added step 0 ranges for reg values which do not change voltage
- added dt-node to psy-config
Patch 1:
DT binding docs for the new battery parameters
Patch 2:
BD99954 charger DT binding docs
Patch 3:
Linear ranges helpers
Patch 4:
Rename struct regulator_linear_range to struct linear_range and
convert regulator drivers to use renamed struct
Patch 5:
Use linear-ranges helpers in regulator framework
Patch 6:
Use linear-ranges helpers in bd70528 driver
Patch 7:
Parsing of new battery parameters
Patch 8:
ROHM BD99954 charger IC driver
---
Matti Vaittinen (8):
dt-bindings: battry: add new battery parameters
dt_bindings: ROHM BD99954 Charger
drivers: base: add linear ranges helpers
regulator: rename regulator_linear_range to linear_range
regulator: use linear_ranges helper
power: supply: bd70528: use linear ranges
power: supply: add battery parameters
power: supply: Support ROHM bd99954 charger
.../bindings/power/supply/battery.txt | 6 +
.../bindings/power/supply/rohm,bd9995x.yaml | 153 +++
drivers/base/Kconfig | 3 +
drivers/base/Makefile | 1 +
drivers/base/linear_ranges.c | 246 ++++
drivers/power/supply/Kconfig | 11 +
drivers/power/supply/Makefile | 1 +
drivers/power/supply/bd70528-charger.c | 142 +-
drivers/power/supply/bd99954-charger.c | 1171 +++++++++++++++++
drivers/power/supply/power_supply_core.c | 8 +
drivers/regulator/88pg86x.c | 4 +-
drivers/regulator/88pm800-regulator.c | 4 +-
drivers/regulator/Kconfig | 1 +
drivers/regulator/act8865-regulator.c | 4 +-
drivers/regulator/act8945a-regulator.c | 2 +-
drivers/regulator/arizona-ldo1.c | 2 +-
drivers/regulator/arizona-micsupp.c | 4 +-
drivers/regulator/as3711-regulator.c | 6 +-
drivers/regulator/as3722-regulator.c | 4 +-
drivers/regulator/axp20x-regulator.c | 16 +-
drivers/regulator/bcm590xx-regulator.c | 8 +-
drivers/regulator/bd70528-regulator.c | 8 +-
drivers/regulator/bd718x7-regulator.c | 26 +-
drivers/regulator/da903x.c | 2 +-
drivers/regulator/helpers.c | 130 +-
drivers/regulator/hi6421-regulator.c | 4 +-
drivers/regulator/lochnagar-regulator.c | 4 +-
drivers/regulator/lp873x-regulator.c | 4 +-
drivers/regulator/lp87565-regulator.c | 2 +-
drivers/regulator/lp8788-buck.c | 2 +-
drivers/regulator/max77650-regulator.c | 2 +-
drivers/regulator/mcp16502.c | 4 +-
drivers/regulator/mt6323-regulator.c | 6 +-
drivers/regulator/mt6358-regulator.c | 8 +-
drivers/regulator/mt6380-regulator.c | 6 +-
drivers/regulator/mt6397-regulator.c | 6 +-
drivers/regulator/palmas-regulator.c | 4 +-
drivers/regulator/qcom-rpmh-regulator.c | 2 +-
drivers/regulator/qcom_rpm-regulator.c | 14 +-
drivers/regulator/qcom_smd-regulator.c | 70 +-
drivers/regulator/rk808-regulator.c | 10 +-
drivers/regulator/s2mps11.c | 14 +-
drivers/regulator/sky81452-regulator.c | 2 +-
drivers/regulator/stpmic1_regulator.c | 18 +-
drivers/regulator/tps65086-regulator.c | 10 +-
drivers/regulator/tps65217-regulator.c | 4 +-
drivers/regulator/tps65218-regulator.c | 6 +-
drivers/regulator/tps65912-regulator.c | 4 +-
drivers/regulator/twl-regulator.c | 4 +-
drivers/regulator/twl6030-regulator.c | 2 +-
drivers/regulator/wm831x-dcdc.c | 2 +-
drivers/regulator/wm831x-ldo.c | 4 +-
drivers/regulator/wm8350-regulator.c | 2 +-
drivers/regulator/wm8400-regulator.c | 2 +-
include/linux/linear_range.h | 48 +
include/linux/power/bd99954-charger.h | 1075 +++++++++++++++
include/linux/power_supply.h | 4 +
include/linux/regulator/driver.h | 27 +-
58 files changed, 3000 insertions(+), 339 deletions(-)
create mode 100644 Documentation/devicetree/bindings/power/supply/rohm,bd9995x.yaml
create mode 100644 drivers/base/linear_ranges.c
create mode 100644 drivers/power/supply/bd99954-charger.c
create mode 100644 include/linux/linear_range.h
create mode 100644 include/linux/power/bd99954-charger.h
base-commit def9d2780727 ("Linux 5.5-rc7")
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
