Openmoko Bug #2177: andy-tracking/de473ca8: unable to powerdown GPS

Openmoko Public Trac bugs at docs.openmoko.org
Tue Dec 16 19:16:53 CET 2008


#2177: andy-tracking/de473ca8: unable to powerdown GPS
-----------------------------+----------------------------------------------
 Reporter:  lindi            |          Owner:  openmoko-kernel
     Type:  defect           |         Status:  new            
 Priority:  normal           |      Milestone:                 
Component:  System Software  |        Version:  unspecified    
 Severity:  normal           |       Keywords:                 
 Haspatch:  0                |      Blockedby:                 
Estimated:                   |    Patchreview:                 
 Blocking:                   |   Reproducible:  always         
-----------------------------+----------------------------------------------
 When I moved from stable-tracking 80f4 to andy-tracking de47 I noticed
 that GPS is powered on bootup and can not be powered down:

 {{{
 root at ginger:~# cat /sys/class/i2c-
 adapter/i2c-0/0-0073/pcf50633-regltr.7/neo1973-pm-gps.0/pwron
 1
 root at ginger:~# echo 0 > /sys/class/i2c-
 adapter/i2c-0/0-0073/pcf50633-regltr.7/neo1973-pm-gps.0/pwron
 root at ginger:~# cat /sys/class/i2c-
 adapter/i2c-0/0-0073/pcf50633-regltr.7/neo1973-pm-gps.0/pwron
 1
 root at ginger:~# uname -r
 2.6.28-GTA02_lindi-andy-tracking_de473ca893c9285a-mokodev
 }}}

 {{{
 strace gpsd -F gpsd.sock -N -n -D 1 /dev/ttySAC1
 }}}

 prints
 {{{
 open("/dev/ttySAC1", O_RDWR|O_NOCTTY|O_NONBLOCK) = 6
 ...
 read(6, "1,012,*4D\r\n$GPGLL,6009.78203,N,02"..., 658) = 72
 }}}

 so the GPS device is really powered up and operating.

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2177>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac


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