GSM Power off

Michael betheg at
Mon Feb 23 17:54:01 CET 2009


can somebody please explain me the differents of these 

	- echo 0 >/sys/bus/platform/devices/neo1973-pm-gsm.0/power_on
	- s3c24xx-gpio b7=0
	- echo "AT at POFF" >/dev/ttySAC0

When i look at the schematic then the MODEM_ON from calypso is on 
GPB7 from s3c2442 and 's3c24xx-gpio b7=0' should Power Off the
calypso, right?
So what does echo 0 >/sys/bus/platform/devices/neo1973-pm-gsm.0/power_on
and echo "AT at POFF" >/dev/ttySAC0 do?

When I want to disable the GSM-Modem completely is then 
echo 0 >/sys/bus/platform/devices/neo1973-pm-gsm.0/power_on enough?


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