X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=Documentation%2Fpower%2Fpower_supply_class.txt;h=c6cd4956047c2f88c24ef5df0282193e885b6b3e;hb=0534c8cb5c8a8a954751fa01eef7831a475a9ec5;hp=a8686e5a68579fc207d4c12e59246d7aee58ffcd;hpb=399f486286f44d55c4fff0e9cc5d712f2b443489;p=~andy%2Flinux

diff --git a/Documentation/power/power_supply_class.txt b/Documentation/power/power_supply_class.txt
index a8686e5a685..c6cd4956047 100644
--- a/Documentation/power/power_supply_class.txt
+++ b/Documentation/power/power_supply_class.txt
@@ -101,6 +101,10 @@ of charge when battery became full/empty". It also could mean "value of
 charge when battery considered full/empty at given conditions (temperature,
 age)". I.e. these attributes represents real thresholds, not design values.
 
+CHARGE_COUNTER - the current charge counter (in µAh).  This could easily
+be negative; there is no empty or full value.  It is only useful for
+relative, time-based measurements.
+
 ENERGY_FULL, ENERGY_EMPTY - same as above but for energy.
 
 CAPACITY - capacity in percents.