/usr/lib/python2.7/dist-packages/framework/subsystems/odeviced/kernel26.py is in fso-frameworkd 0.10.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""
Open Device Daemon - A plugin for Kernel 2.6 based class interfaces
(C) 2008 Michael 'Mickey' Lauer <mlauer@vanille-media.de>
(C) 2008 Openmoko, Inc.
GPLv2 or later
"""
MODULE_NAME = "odeviced.kernel26"
__version__ = "0.9.9.9"
from helpers import DBUS_INTERFACE_PREFIX, DBUS_PATH_PREFIX, readFromFile, writeToFile, cleanObjectName
from framework.config import config
from framework.patterns.kobject import KObjectDispatcher
from framework.patterns.null import Null
import dbus.service
import gobject
import os, time, sys, fcntl
import calendar
import logging
logger = logging.getLogger( MODULE_NAME )
try:
import pyrtc
except ImportError:
logger.error( "pyrtc not present. Can not operate real time clock" )
FBIOBLANK = 0x4611
FB_BLANK_UNBLANK = 0
FB_BLANK_POWERDOWN = 4
#----------------------------------------------------------------------------#
class UnsupportedTrigger( dbus.DBusException ):
#----------------------------------------------------------------------------#
_dbus_error_name = "org.freesmartphone.Device.Display.UnsupportedTrigger"
#----------------------------------------------------------------------------#
class InvalidParameter( dbus.DBusException ):
#----------------------------------------------------------------------------#
_dbus_error_name = "org.freesmartphone.InvalidParameter"
#----------------------------------------------------------------------------#
class Display( dbus.service.Object ):
#----------------------------------------------------------------------------#
"""A Dbus Object implementing org.freesmartphone.Device.Display
using the kernel 2.6 backlight class device"""
DBUS_INTERFACE = DBUS_INTERFACE_PREFIX + ".Display"
SUPPORTS_MULTIPLE_OBJECT_PATHS = True
OBJECT_PATH_COUNTER = 0
def __init__( self, bus, index, node ):
self.interface = self.DBUS_INTERFACE
self.path = DBUS_PATH_PREFIX + "/Display/%s" % cleanObjectName( node.split('/')[-1] )
dbus.service.Object.__init__( self, bus, self.path )
logger.info( "%s %s initialized. Serving %s at %s" % ( self.__class__.__name__, __version__, self.interface, self.path ) )
self.node = node
self.max = int( readFromFile( "%s/max_brightness" % self.node ) )
self.current = int( readFromFile( "%s/actual_brightness" % self.node ) )
logger.debug( "current brightness %d, max brightness %d" % ( self.current, self.max ) )
self.fbblank = config.getBool( MODULE_NAME, "fb_blank", True )
logger.info( "framebuffer blanking %s" % ( "enabled" if self.fbblank else "disabled" ) )
# also register object under an incremental path
self.path2 = DBUS_PATH_PREFIX + "/Display/%d" % self.__class__.OBJECT_PATH_COUNTER
self.add_to_connection( self._connection, self.path2 )
self.__class__.OBJECT_PATH_COUNTER += 1
def _valueToPercent( self, value ):
"""
convert device dependent value to percentage
"""
return int( 100.0 / self.max * int( value ) )
def _percentToValue( self, percent ):
"""
convert percentage to device dependent value
"""
if percent >= 100:
value = self.max
elif percent <= 0:
value = 0
else:
value = int( round( percent / 100.0 * self.max ) )
return value
def _setFbPower( self, on ):
"""
set power on current framebuffer device
"""
if not self.fbblank:
return
try:
framebuffer = open( "/dev/fb0" )
except IOError:
logger.exception( "can't open framebuffer device to issue ioctl" )
else:
logger.debug( "issuing ioctl( FBIOBLANK, %s )" % ( "FB_BLANK_UNBLANK" if on else "FB_BLANK_POWERDOWN" ) )
result = fcntl.ioctl( framebuffer, FBIOBLANK, FB_BLANK_UNBLANK if on else FB_BLANK_POWERDOWN )
if result != 0:
logger.warning( "issuing ioctl( FBIOBLANK, %s ) returned error %d", ( "FB_BLANK_UNBLANK" if on else "FB_BLANK_POWERDOWN" ), result )
return False # don't call me again
#
# dbus
#
@dbus.service.method( DBUS_INTERFACE, "", "s" )
def GetName( self ):
return self.node.split("/")[-1]
@dbus.service.method( DBUS_INTERFACE, "", "i" )
def GetBrightness( self ):
value = readFromFile( "%s/actual_brightness" % self.node )
return self._valueToPercent( value )
@dbus.service.method( DBUS_INTERFACE, "i", "" )
def SetBrightness( self, brightness ):
value = self._percentToValue( brightness )
if self.current != value:
writeToFile( "%s/brightness" % self.node, str( value ) )
if self.current == 0: # previously, we were off
self._setFbPower( True )
elif value == 0:
self._setFbPower( False )
self.current = value
@dbus.service.method( DBUS_INTERFACE, "", "b" )
def GetBacklightPower( self ):
return readFromFile( "%s/bl_power" % self.node ) == "0"
@dbus.service.method( DBUS_INTERFACE, "b", "" )
def SetBacklightPower( self, power ):
value = 0 if power else 1
writeToFile( "%s/bl_power" % self.node, str( value ) )
#----------------------------------------------------------------------------#
class LED( dbus.service.Object ):
#----------------------------------------------------------------------------#
"""A Dbus Object implementing org.freesmartphone.Device.LED
using the kernel 2.6 led class device"""
DBUS_INTERFACE = DBUS_INTERFACE_PREFIX + ".LED"
def __init__( self, bus, index, node ):
self.interface = self.DBUS_INTERFACE
self.path = DBUS_PATH_PREFIX + "/LED/%s" % cleanObjectName( node.split('/')[-1] )
dbus.service.Object.__init__( self, bus, self.path )
logger.info( "%s %s initialized. Serving %s at %s" % ( self.__class__.__name__, __version__, self.interface, self.path ) )
self.node = node
# initial status = off
self.SetBrightness( 0 )
# store available triggers for later
self.triggers = readFromFile( "%s/trigger" % self.node ).split()
logger.debug( "available triggers %s" % self.triggers )
def shutdown( self ):
"""
Called upon subsystem shutdown.
"""
self.SetBrightness( 0 )
#
# dbus
#
@dbus.service.method( DBUS_INTERFACE, "", "s" )
def GetName( self ):
return self.node.split("/")[-1]
@dbus.service.method( DBUS_INTERFACE, "i", "" )
def SetBrightness( self, brightness ):
writeToFile( "%s/trigger" % self.node, "none" )
if brightness >= 100:
value = 255
elif brightness <= 0:
value = 0
else:
value = int( round( brightness / 100.0 * 255 ) )
writeToFile( "%s/brightness" % self.node, str( value ) )
@dbus.service.method( DBUS_INTERFACE, "ii", "" )
def SetBlinking( self, delay_on, delay_off ):
# validate parameters
if "timer" not in self.triggers:
raise UnsupportedTrigger( "Timer trigger not available. Available triggers are %s" % self.triggers )
# do it
else:
writeToFile( "%s/trigger" % self.node, "timer" )
writeToFile( "%s/delay_on" % self.node, str( abs( delay_on ) ) )
writeToFile( "%s/delay_off" % self.node, str( abs( delay_off ) ) )
@dbus.service.method( DBUS_INTERFACE, "iii", "" )
def BlinkSeconds( self, seconds, delay_on, delay_off ):
# define stop function
def stopIt( self=self ):
self.SetBrightness( 0 )
return False # remove timer, don't call again
# start
self.SetBlinking( delay_on, delay_off )
gobject.timeout_add_seconds( seconds, stopIt )
@dbus.service.method( DBUS_INTERFACE, "ss", "" )
def SetNetworking( self, interface, mode ):
# validate parameters
if "netdev" not in self.triggers:
raise UnsupportedTrigger( "Netdev trigger not available. Available triggers are %s" % self.triggers )
interfaces = os.listdir( "/sys/class/net" )
if interface not in interfaces:
raise InvalidParameter( "Interface %s not known. Available interfaces are %s" % ( interface, interfaces ) )
modes = mode.strip().split()
for m in modes:
if m not in "link rx tx".split():
raise InvalidParameter( "Mode element %s not known. Available elements are 'link rx tx'" % m )
# do it
writeToFile( "%s/trigger" % self.node, "netdev" )
writeToFile( "%s/device_name" % self.node, str( interface.strip() ) )
writeToFile( "%s/mode" % self.node, str( mode.strip() ) )
#----------------------------------------------------------------------------#
class PowerSupply( dbus.service.Object ):
#----------------------------------------------------------------------------#
"""A Dbus Object implementing org.freesmartphone.Device.PowerSupply
using the kernel 2.6 power_supply class device"""
DBUS_INTERFACE = DBUS_INTERFACE_PREFIX + ".PowerSupply"
def __init__( self, bus, index, node ):
self.interface = self.DBUS_INTERFACE
self.path = DBUS_PATH_PREFIX + "/PowerSupply/%s" % cleanObjectName( node.split('/')[-1] )
dbus.service.Object.__init__( self, bus, self.path )
logger.info( "%s %s initialized. Serving %s at %s" % ( self.__class__.__name__, __version__, self.interface, self.path ) )
self.node = node
self.powerStatus = "unknown"
self.online = False
self.capacity = -1
self.type_ = readFromFile( "%s/type" % self.node ).lower()
self.isBattery = ( self.type_ == "battery" )
# get polling-free battery notifications via kobject/uevent
if self.isBattery:
KObjectDispatcher.addMatch( "change", "/class/power_supply/%s" % node.split('/')[-1], self.handlePropertyChange )
capacityCheckTimeout = config.getInt( MODULE_NAME, "capacity_check_timeout", 60*5 )
self.capacityWatch = gobject.timeout_add_seconds( capacityCheckTimeout, self.onCapacityCheck )
# FIXME should this rather be handled globally (controller issuing a coldstart on every subsystem)? Yes!
gobject.idle_add( self.onColdstart )
def isPresent( self ):
toRead = "%s/present" if self.isBattery else "%s/online"
present = readFromFile( toRead % self.node )
return ( present == "1" )
def theType( self ):
return readFromFile( "%s/type" % self.node )
def onColdstart( self ):
data = readFromFile( "%s/uevent" % self.node )
parts = data.split( '\n' )
d = dict( [ x.split('=') for x in parts if '=' in x ] )
self.handlePropertyChange( "coldplug", "<this-battery>", **d )
return False # mainloop: don't call me again
def readCapacity( self ):
if not self.isBattery:
return 100
if not self.isPresent():
return -1
data = readFromFile( "%s/capacity" % self.node )
try:
capacity = int( data )
except ValueError:
energy_full = readFromFile( "%s/energy_full" % self.node )
energy_now = readFromFile( "%s/energy_now" % self.node )
if energy_full == "N/A" or energy_now == "N/A":
return -1
else:
return 100 * int(energy_now) / int(energy_full)
else:
return capacity
def onCapacityCheck( self ):
if not self.isPresent():
logger.warning( "Power supply %s has been removed. On AC.", self )
self.sendPowerStatusIfChanged( "ac" )
return True # call me again
capacity = self.readCapacity()
self.sendCapacityIfChanged( capacity )
if self.isPresent():
if capacity > 98: # older batteries will never reach 100
self.sendPowerStatusIfChanged( "full" )
else: # offline
if capacity <= 5:
self.sendPowerStatusIfChanged( "empty" )
elif capacity <= 10:
self.sendPowerStatusIfChanged( "critical" )
return True # call me again
def handlePropertyChange( self, action, path, **properties ):
if not self.isPresent():
return False # don't call me again
logger.debug( "got property action '%s' from uevent for path '%s': %s" % ( action, path, properties ) )
try:
self.online = ( properties["POWER_SUPPLY_ONLINE"] == '1' )
except KeyError:
pass
try:
powerStatus = properties["POWER_SUPPLY_STATUS"].lower()
except KeyError:
pass
else:
# NOTE1: On some devices, peripherals are connected directly to the battery, which means
# they can _not_ drag power from USB. Hence, the battery needs to be recharged frequently,
# even while it is full. To cover up for this, we do not send 'charging' if the last status was
# full.
if powerStatus == "charging" and self.powerStatus == "full":
logger.info( "Charging has been restarted, although power is still full. Ignoring" )
else:
# NOTE2: "Not Charging" is an interesting state which can have two reasons:
# 1.) The charger has been physically inserted but the device has not yet enumerated on USB.
# 2.) The battery has been fully charged and we're now just grabbing power from the charger.
if powerStatus != "not charging":
self.sendPowerStatusIfChanged( powerStatus )
return False # don't call me again
def sendPowerStatusIfChanged( self, powerStatus ):
if powerStatus != self.powerStatus:
self.PowerStatus( powerStatus )
def sendCapacityIfChanged( self, capacity ):
if capacity != self.capacity:
self.Capacity( capacity )
#
# dbus methods
#
@dbus.service.method( DBUS_INTERFACE, "", "s" )
def GetName( self ):
return self.node.split("/")[-1]
@dbus.service.method( DBUS_INTERFACE, "", "s" )
def GetType( self ):
return self.theType()
# FIXME: we might want to remove that -- anyone really interested should rather walk through the sysfs path
@dbus.service.method( DBUS_INTERFACE, "", "a{sv}" )
def GetInfo( self ):
# AC/BATs differ in lots of nodes. Do we want additional methods for present / online ?
keys = [ key for key in os.listdir( self.node ) if key != "uevent" if os.path.isfile( "%s/%s" % ( self.node, key ) ) ]
dict = {}
for key in keys:
dict[key] = readFromFile( "%s/%s" % ( self.node, key ) )
return dict
@dbus.service.method( DBUS_INTERFACE, "", "b" )
def IsPresent( self ):
return self.isPresent()
@dbus.service.method( DBUS_INTERFACE, "", "i" )
def GetCapacity( self ):
if self.capacity == -1:
self.onCapacityCheck()
return self.capacity
@dbus.service.method( DBUS_INTERFACE, "", "s" )
def GetPowerStatus( self ):
return self.powerStatus
#
# dbus signals
#
@dbus.service.signal( DBUS_INTERFACE, "s" )
def PowerStatus( self, status ):
self.powerStatus = status
logger.info( "power status now %s" % status )
@dbus.service.signal( DBUS_INTERFACE, "i" )
def Capacity( self, percent ):
self.capacity = percent
logger.info( "capacity now %d" % percent )
#----------------------------------------------------------------------------#
class PowerSupplyApm( dbus.service.Object ):
#----------------------------------------------------------------------------#
"""A Dbus Object implementing org.freesmartphone.Device.PowerSupply
using the kernel apm or acpi facilities"""
DBUS_INTERFACE = DBUS_INTERFACE_PREFIX + ".PowerSupply"
def __init__( self, bus, index, node ):
self.interface = self.DBUS_INTERFACE
self.path = DBUS_PATH_PREFIX + "/PowerSupply/%s" % cleanObjectName( node.split('/')[-1] )
dbus.service.Object.__init__( self, bus, self.path )
logger.info( "%s %s initialized. Serving %s at %s" % ( self.__class__.__name__, __version__, self.interface, self.path ) )
self.node = node
def readApm( self ):
return open( self.node, "r" ).read().strip().split()
#
# dbus
#
@dbus.service.method( DBUS_INTERFACE, "", "s" )
def GetName( self ):
return "APM"
@dbus.service.method( DBUS_INTERFACE, "", "a{sv}" )
def GetInfo( self ):
return {}
@dbus.service.method( DBUS_INTERFACE, "", "b" )
def GetOnBattery( self ):
d, b, f, AC, BAT, flags, percentage, time, units = self.readApm()
return AC != "0x01"
@dbus.service.method( DBUS_INTERFACE, "", "i" )
def GetEnergyPercentage( self ):
d, b, f, AC, BAT, flags, percentage, time, units = self.readApm()
return int( percentage[:-1] )
#----------------------------------------------------------------------------#
class RealtimeClock( dbus.service.Object ):
#----------------------------------------------------------------------------#
"""A Dbus Object implementing org.freesmartphone.Device.RealtimeClock
using the kernel 2.6 rtc class device"""
DBUS_INTERFACE = DBUS_INTERFACE_PREFIX + ".RealtimeClock"
SUPPORTS_MULTIPLE_OBJECT_PATHS = True
OBJECT_PATH_COUNTER = 0
def __init__( self, bus, index, node ):
self.interface = self.DBUS_INTERFACE
self.path = DBUS_PATH_PREFIX + "/RTC/%s" % cleanObjectName( node.split('/')[-1] )
dbus.service.Object.__init__( self, bus, self.path )
logger.info( "%s %s initialized. Serving %s at %s" % ( self.__class__.__name__, __version__, self.interface, self.path ) )
self.node = node
# also register object under an incremental path
self.path2 = DBUS_PATH_PREFIX + "/RTC/%d" % self.__class__.OBJECT_PATH_COUNTER
self.add_to_connection( self._connection, self.path2 )
self.__class__.OBJECT_PATH_COUNTER += 1
#
# dbus
#
@dbus.service.method( DBUS_INTERFACE, "", "s" )
def GetName( self ):
return self.node.split("/")[-1]
@dbus.service.method( DBUS_INTERFACE, "", "i" )
def GetCurrentTime( self ):
"""Return seconds since epoch (UTC)"""
return int( readFromFile( "%s/since_epoch" % self.node ) )
@dbus.service.method( DBUS_INTERFACE, "i", "" )
def SetCurrentTime( self, t ):
"""Set time by seconds since epoch (UTC)"""
pyrtc.rtcSetTime( time.gmtime( t ) )
@dbus.service.signal( DBUS_INTERFACE, "i" )
def WakeupTimeChanged ( self, t ):
pass
@dbus.service.method( DBUS_INTERFACE, "", "i" )
def GetWakeupTime( self ):
"""Return wakeup time in seconds since epoch (UTC) if a wakeup
time has been set. Return 0, otherwise."""
# the wakealarm attribute is not always present
result = pyrtc.rtcReadAlarm()
if result is None:
logger.error( "Can't read RTC alarm. Returning 0" )
result = ( ( False, False ), 0 )
( enabled, pending ), t = result
return 0 if not enabled else calendar.timegm( t )
@dbus.service.method( DBUS_INTERFACE, "i", "" )
def SetWakeupTime( self, t ):
"""Set wakeup time in seconds since epoch (UTC). Set 0 to disable."""
if t == 0:
pyrtc.rtcDisableAlarm()
else:
pyrtc.rtcSetAlarm( time.gmtime( t ) )
self.WakeupTimeChanged( t )
#----------------------------------------------------------------------------#
def factory( prefix, controller ):
#----------------------------------------------------------------------------#
"""Scan for available sysfs nodes and instanciate corresponding
dbus server objects"""
bus = controller.bus
objects = []
# scan for displays
backlightpath = "/sys/class/backlight"
if os.path.exists( backlightpath ):
for ( index, node ) in enumerate( os.listdir( backlightpath ) ):
logger.debug( "scanning %s %s", index, node )
objects.append( Display( bus, index, "%s/%s" % ( backlightpath, node ) ) )
# scan for leds
ledpath = "/sys/class/leds"
if os.path.exists( ledpath ):
for ( index, node ) in enumerate( os.listdir( ledpath ) ):
logger.debug( "scanning %s %s", index, node )
objects.append( LED( bus, index, "%s/%s" % ( ledpath, node ) ) )
# scan for power supplies (kernel 2.6.24++)
powerpath = "/sys/class/power_supply"
if os.path.exists( powerpath ):
for ( index, node ) in enumerate( os.listdir( powerpath ) ):
logger.debug( "scanning %s %s", index, node )
objects.append( PowerSupply( bus, index+1, "%s/%s" % ( powerpath, node ) ) )
# scan for real time clocks
rtcpath = "/sys/class/rtc"
if os.path.exists( rtcpath ):
for ( index, node ) in enumerate( os.listdir( rtcpath ) ):
logger.debug( "scanning %s %s", index, node )
objects.append( RealtimeClock( bus, index, "%s/%s" % ( rtcpath, node ) ) )
return objects
if __name__ == "__main__":
import dbus
bus = dbus.SystemBus()
from itertools import count
def requestInterfaceForObject( prefix, interface, object ):
proxy = bus.get_object( prefix, object )
#print( proxy.Introspect( dbus_interface = "org.freedesktop.DBus.Introspectable" ) )
iface = dbus.Interface(proxy, interface )
try:
iface.GetName()
except dbus.exceptions.DBusException:
return None
else:
return iface
display = []
for i in count():
iface = requestInterfaceForObject( DBUS_INTERFACE_PREFIX, Display.DBUS_INTERFACE, DBUS_PATH_PREFIX+"/Display/%s" % i )
if iface is not None:
display.append( iface )
else:
break
if display:
d = display[0]
print "name =", d.GetName()
print "backlight power =", d.GetBacklightPower()
print "brightness =", d.GetBrightness()
try:
d.SetBacklightPower( True )
d.SetBrightness( 50 )
except dbus.exceptions.DBusException:
pass # could be permission denied
led = []
for i in count():
iface = requestInterfaceForObject( DBUS_INTERFACE_PREFIX, LED.DBUS_INTERFACE, DBUS_PATH_PREFIX+"/LED/%s" % i )
if iface is not None:
led.append( iface )
else:
break
power = []
for i in count():
iface = requestInterfaceForObject( DBUS_INTERFACE_PREFIX, PowerSupply.DBUS_INTERFACE, DBUS_PATH_PREFIX+"/PowerSupply/%s" % i )
if iface is not None:
power.append( iface )
else:
break
rtc = []
for i in count():
iface = requestInterfaceForObject( DBUS_INTERFACE_PREFIX, RealtimeClock.DBUS_INTERFACE, DBUS_PATH_PREFIX+"/RTC/%s" % i )
if iface is not None:
rtc.append( iface )
else:
break
print "result: ", display, power, led, rtc
print "found %d displays..." % len( display )
for o in display: print ">", o.GetName()
print "found %d leds..." % len( led )
for o in led: print ">", o.GetName()
print "found %d power supplies..." % len(power)
for o in power: print ">", o.GetName()
print "found %d real time clocks..." % len( rtc )
for o in rtc: print ">", o.GetName()
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