power_supply: Add new lp8788 charger driver

TI LP8788 PMU supports regulators, battery charger, RTC, ADC, backlight
driver and current sinks.

This patch supports the charger operations including the charger
interrupt handling.

The LP8788 charger driver provides configurable platform data.  The
charger platform data includes ADC input ID, maximum battery voltage,
charging parameters and etc.

The ADC input is used for getting the battery voltage and temperature.
Charging parameters are used for updating the charger operations such
like setting charging current and setting End-of-charge conditions.

When the charging interrupt occurs, power supply uevents are generated
in order to update the user-space information.  For platform specific
charger action, the charger_event() function can be used in the
platform side.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index fcc1bb076217..4ec2ff0ee4a2 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -254,6 +254,13 @@ config CHARGER_LP8727
         help
           Say Y here to enable support for LP8727 Charger Driver.
 
+config CHARGER_LP8788
+        tristate "TI LP8788 charger driver"
+        depends on MFD_LP8788
+        depends on LP8788_ADC
+        help
+          Say Y to enable support for the LP8788 linear charger.
+
 config CHARGER_GPIO
         tristate "GPIO charger"
         depends on GPIOLIB