From 25a0bc2dfc2ea732f40af2dae52426ead66ae76e Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 7 Dec 2011 11:24:20 -0800 Subject: 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 Cc: Richard Hughes --- include/linux/power_supply.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux/power_supply.h') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 204c18dfdc9..040a7b08e7c 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, -- cgit v1.2.3