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authorJeremy Fitzhardinge <jeremy@goop.org>2011-12-07 11:24:20 -0800
committerJeremy Fitzhardinge <jeremy@goop.org>2011-12-09 09:42:05 -0800
commit25a0bc2dfc2ea732f40af2dae52426ead66ae76e (patch)
tree180dc7e4122da2f40b241c5e936a0668420f4bb7 /include/linux/power_supply.h
parentcfcfc9eca2bcbd26a8e206baeb005b055dbf8e37 (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.h7
1 files changed, 7 insertions, 0 deletions
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,