Issue 49: Add driver to enable/control GPS module

Reported by Nikolaus Schaller, Apr 22, 2010

we need a driver to enable the GPIO that controls the GPS module

Comment 1 by Nikolaus Schaller, May 20, 2010

Should only provide some /sys/xxxx/GPS/power
Or if we can control the GPIO156 from user space we should use that 
generic method.
And, we must access UART2 (no RTS/CTS, 9600 bit/s).

Comment 2 by Nikolaus Schaller, May 25, 2010

Pinmux has been fixed.

can now be enabled through echo 1 
>/sys/devices/virtual/gpio/gpio156/value

data can be read through cat /dev/ttyS1

Status: Fixed

Letux Kernel