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| author | Liam Breck <kernel@networkimprov.net> | 2017-06-07 11:37:51 -0700 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.co.uk> | 2017-06-08 16:29:28 +0200 |
| commit | c08b1f45d7d193b3e6dcbbf30d403cb49b667b8c (patch) | |
| tree | 9f7389a87a3d8ff991f61d70d8224adee4f1e3f8 /Documentation/power | |
| parent | 230670479a6c54dcae6387119bb7d4441d7870b2 (diff) | |
| download | lwn-c08b1f45d7d193b3e6dcbbf30d403cb49b667b8c.tar.gz lwn-c08b1f45d7d193b3e6dcbbf30d403cb49b667b8c.zip | |
power: supply: core: Add power_supply_battery_info and API
power_supply_get_battery_info() reads battery data from devicetree.
struct power_supply_battery_info provides battery data to drivers.
Its fields correspond to elements in enum power_supply_property.
Drivers may surface battery data in sysfs via corresponding
POWER_SUPPLY_PROP_* fields.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/power_supply_class.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/power/power_supply_class.txt b/Documentation/power/power_supply_class.txt index 0c72588bd967..01f007591070 100644 --- a/Documentation/power/power_supply_class.txt +++ b/Documentation/power/power_supply_class.txt @@ -174,6 +174,18 @@ issued by external power supply will notify supplicants via external_power_changed callback. +Devicetree battery characteristics +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +Drivers should call power_supply_get_battery_info() to obtain battery +characteristics from a devicetree battery node, defined in +Documentation/devicetree/bindings/power/supply/battery.txt. This is +implemented in drivers/power/supply/bq27xxx_battery.c. + +Properties in struct power_supply_battery_info and their counterparts in the +battery node have names corresponding to elements in enum power_supply_property, +for naming consistency between sysfs attributes and battery node properties. + + QA ~~ Q: Where is POWER_SUPPLY_PROP_XYZ attribute? |