Samsung Galaxy Grand Max (samsung-grandmax)

LEDs
The LEDs on the touchkey are, which can be controlled by subsystem   and udev rules.

More information on LEDs handling can be found at: LEDs.

Battery
Actually a  with   driver.

Touchkey
Touchkey type is unknown, so there is nothing done for it.

Ambient Light/Proximity Sensor
The driver for  ambient light/proximity sensor is not available.