power_supply: Add initial Charger-Manager driver

Because battery health monitoring should be done even when suspended,
it needs to wake up and suspend periodically. Thus, userspace battery
monitoring may incur too much overhead; every device and task is woken
up periodically. Charger Manager uses suspend-again to provide
in-suspend monitoring.

This patch allows to monitor battery health in-suspend state.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 57de051a74b3..363f4d1ae067 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -235,6 +235,16 @@ config CHARGER_GPIO
           This driver can be build as a module. If so, the module will be
           called gpio-charger.
 
+config CHARGER_MANAGER
+        bool "Battery charger manager for multiple chargers"
+        depends on REGULATOR && RTC_CLASS
+        help
+          Say Y to enable charger-manager support, which allows multiple
+          chargers attached to a battery and multiple batteries attached to a
+          system. The charger-manager also can monitor charging status in
+          runtime and in suspend-to-RAM by waking up the system periodically
+          with help of suspend_again support.
+
 config CHARGER_MAX8997
         tristate "Maxim MAX8997/MAX8966 PMIC battery charger driver"
         depends on MFD_MAX8997 && REGULATOR_MAX8997