power_supply: Add a charge_type property, and use it for olpc driver

This adds a new sysfs file called 'charge_type' which displays the
type of charging (unknown, n/a, trickle charge, or fast charging).

This allows things like battery diagnostics to determine what the
battery/EC is doing without resorting to changing the 'status' sysfs
output.

Signed-off-by: Andres Salomon <dilinger@collabora.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 0ab6aa171241..4c7c6fc35487 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -39,6 +39,13 @@ enum {
 };
 
 enum {
+        POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0,
+        POWER_SUPPLY_CHARGE_TYPE_NONE,
+        POWER_SUPPLY_CHARGE_TYPE_TRICKLE,
+        POWER_SUPPLY_CHARGE_TYPE_FAST,
+};
+
+enum {
         POWER_SUPPLY_HEALTH_UNKNOWN = 0,
         POWER_SUPPLY_HEALTH_GOOD,
         POWER_SUPPLY_HEALTH_OVERHEAT,
@@ -70,6 +77,7 @@ enum {
 enum power_supply_property {
         /* Properties of type `int' */
         POWER_SUPPLY_PROP_STATUS = 0,
+        POWER_SUPPLY_PROP_CHARGE_TYPE,
         POWER_SUPPLY_PROP_HEALTH,
         POWER_SUPPLY_PROP_PRESENT,
         POWER_SUPPLY_PROP_ONLINE,