diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2011-12-07 11:24:20 -0800 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy@goop.org> | 2011-12-09 09:42:05 -0800 |
| commit | 25a0bc2dfc2ea732f40af2dae52426ead66ae76e (patch) | |
| tree | 180dc7e4122da2f40b241c5e936a0668420f4bb7 /include/linux/power_supply.h | |
| parent | cfcfc9eca2bcbd26a8e206baeb005b055dbf8e37 (diff) | |
power_supply: add SCOPE attribute to power supplies
This adds a "scope" attribute to a power_supply, which indicates how
much of the system it powers. It appears in sysfs as "scope" or in
the uevent file as POWER_SUPPLY_SCOPE=. There are presently three
possible values:
Unknown - unknown power topology
System - the power supply powers the whole system
Device - it powers a specific device, or tree of devices
A power supply which doesn't have a "scope" attribute should be assumed to
have "System" scope.
In general, usermode should assume that loss of all System-scoped power
supplies will power off the whole system, but any single one is sufficient
to power the system.
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Richard Hughes <richard@hughsie.com>
Diffstat (limited to 'include/linux/power_supply.h')
| -rw-r--r-- | include/linux/power_supply.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 204c18dfdc9e..040a7b08e7c7 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -74,6 +74,12 @@ enum { POWER_SUPPLY_CAPACITY_LEVEL_FULL, }; +enum { + POWER_SUPPLY_SCOPE_UNKNOWN = 0, + POWER_SUPPLY_SCOPE_SYSTEM, + POWER_SUPPLY_SCOPE_DEVICE, +}; + enum power_supply_property { /* Properties of type `int' */ POWER_SUPPLY_PROP_STATUS = 0, @@ -116,6 +122,7 @@ enum power_supply_property { POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */ + POWER_SUPPLY_PROP_SCOPE, /* Properties of type `const char *' */ POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_MANUFACTURER, |