mfd: MAX8997/8966 support

MAX8997/MAX8966 chip is a multi-function device with I2C bussses. The
chip includes PMIC, RTC, Fuel Gauge, MUIC, Haptic, Flash control, and
Battery (charging) control.

This patch is an initial release of a MAX8997/8966 driver that supports
to enable the chip with its primary I2C bus that connects every device
mentioned above except for Fuel Gauge, which uses another I2C bus. The
fuel gauge is not supported by this mfd driver and is supported by a
seperated driver of MAX17042 Fuel Gauge (yes, the fuel gauge part is
compatible with MAX17042).

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 50c476964e48..642168c8d3b1 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -314,6 +314,18 @@ config MFD_MAX8925
           accessing the device, additional drivers must be enabled in order
           to use the functionality of the device.
 
+config MFD_MAX8997
+        bool "Maxim Semiconductor MAX8997/8966 PMIC Support"
+        depends on I2C=y && GENERIC_HARDIRQS
+        select MFD_CORE
+        help
+          Say yes here to support for Maxim Semiconductor MAX8998/8966.
+          This is a Power Management IC with RTC, Flash, Fuel Gauge, Haptic,
+          MUIC controls on chip.
+          This driver provies common support for accessing the device,
+          additional drivers must be enabled in order to use the functionality
+          of the device.
+
 config MFD_MAX8998
         bool "Maxim Semiconductor MAX8998/National LP3974 PMIC Support"
         depends on I2C=y && GENERIC_HARDIRQS