kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_AB3550_CORE.
Result is shown for kernelversion 3.1.9
selects
CONFIG_MFD_CORE

depends
CONFIG_ABX500_CORE
CONFIG_GENERIC_HARDIRQS
CONFIG_I2C
CONFIG_MFD_SUPPORT

ST-Ericsson AB3550 Mixed Signal Circuit core functions

modulename: ab3550-core.ko
configname: CONFIG_AB3550_CORE

Linux Kernel Configuration
└─> Device Drivers
└─> Multifunction device drivers
└─> I2C support
└─> ST-Ericsson AB3550 Mixed Signal Circuit core functions

Select this to enable the AB3550 Mixed Signal IC core
functionality. This connects to a AB3550 on the I2C bus
and expose a number of symbols needed for dependent devices
to read and write registers and subscribe to events from
this multi-functional IC. This is needed to use other features
of the AB3550 such as battery-backed RTC, charging control,
LEDs, vibrator, system power and temperature, power management
and ALSA sound.


source code:


drivers/mfd//ab3550-core.c