/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- * * Copyright (C) 2008 David Zeuthen * Copyright (C) 2008 Richard Hughes * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include "sysfs-utils.h" #include "devkit-power-enum.h" #include "devkit-power-source.h" #include "devkit-power-marshal.h" /*--------------------------------------------------------------------------------------------------------------*/ #include "devkit-power-source-glue.h" #define DK_POWER_MIN_CHARGED_PERCENTAGE 60 struct DevkitPowerSourcePrivate { DBusGConnection *system_bus_connection; DBusGProxy *system_bus_proxy; DevkitPowerDaemon *daemon; DevkitDevice *d; char *object_path; char *native_path; guint poll_timer_id; char *vendor; char *model; char *serial; GTimeVal update_time; DevkitPowerType type; gboolean has_coldplug_values; gboolean power_supply; gboolean line_power_online; gboolean battery_is_present; gboolean battery_is_rechargeable; DevkitPowerState battery_state; DevkitPowerTechnology battery_technology; double battery_capacity; double battery_energy; double battery_energy_empty; double battery_energy_full; double battery_energy_full_design; double battery_energy_rate; gint64 battery_time_to_empty; gint64 battery_time_to_full; double battery_percentage; double battery_energy_old; GTimeVal battery_energy_old_timespec; }; static void devkit_power_source_class_init (DevkitPowerSourceClass *klass); static void devkit_power_source_init (DevkitPowerSource *source); static void devkit_power_source_finalize (GObject *object); static void devkit_power_source_reset_values(DevkitPowerSource *source); static gboolean update (DevkitPowerSource *source); enum { PROP_0, PROP_NATIVE_PATH, PROP_VENDOR, PROP_MODEL, PROP_SERIAL, PROP_UPDATE_TIME, PROP_TYPE, PROP_LINE_POWER_ONLINE, PROP_POWER_SUPPLY, PROP_BATTERY_CAPACITY, PROP_BATTERY_IS_PRESENT, PROP_BATTERY_IS_RECHARGEABLE, PROP_BATTERY_STATE, PROP_BATTERY_ENERGY, PROP_BATTERY_ENERGY_EMPTY, PROP_BATTERY_ENERGY_FULL, PROP_BATTERY_ENERGY_FULL_DESIGN, PROP_BATTERY_ENERGY_RATE, PROP_BATTERY_TIME_TO_EMPTY, PROP_BATTERY_TIME_TO_FULL, PROP_BATTERY_PERCENTAGE, PROP_BATTERY_TECHNOLOGY, }; enum { CHANGED_SIGNAL, LAST_SIGNAL, }; static guint signals[LAST_SIGNAL] = { 0 }; G_DEFINE_TYPE (DevkitPowerSource, devkit_power_source, DEVKIT_TYPE_POWER_DEVICE) #define DEVKIT_POWER_SOURCE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DEVKIT_TYPE_POWER_SOURCE, DevkitPowerSourcePrivate)) static const char *devkit_power_source_get_object_path (DevkitPowerDevice *device); static void devkit_power_source_removed (DevkitPowerDevice *device); static gboolean devkit_power_source_changed (DevkitPowerDevice *device, DevkitDevice *d, gboolean synthesized); static void get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { DevkitPowerSource *source = DEVKIT_POWER_SOURCE (object); switch (prop_id) { case PROP_NATIVE_PATH: g_value_set_string (value, source->priv->native_path); break; case PROP_VENDOR: g_value_set_string (value, source->priv->vendor); break; case PROP_MODEL: g_value_set_string (value, source->priv->model); break; case PROP_SERIAL: g_value_set_string (value, source->priv->serial); break; case PROP_UPDATE_TIME: g_value_set_uint64 (value, source->priv->update_time.tv_sec); break; case PROP_TYPE: g_value_set_string (value, devkit_power_convert_type_to_text (source->priv->type)); break; case PROP_POWER_SUPPLY: g_value_set_boolean (value, source->priv->power_supply); break; case PROP_LINE_POWER_ONLINE: g_value_set_boolean (value, source->priv->line_power_online); break; case PROP_BATTERY_IS_PRESENT: g_value_set_boolean (value, source->priv->battery_is_present); break; case PROP_BATTERY_IS_RECHARGEABLE: g_value_set_boolean (value, source->priv->battery_is_rechargeable); break; case PROP_BATTERY_STATE: g_value_set_string (value, devkit_power_convert_state_to_text (source->priv->battery_state)); break; case PROP_BATTERY_CAPACITY: g_value_set_double (value, source->priv->battery_capacity); break; case PROP_BATTERY_ENERGY: g_value_set_double (value, source->priv->battery_energy); break; case PROP_BATTERY_ENERGY_EMPTY: g_value_set_double (value, source->priv->battery_energy_empty); break; case PROP_BATTERY_ENERGY_FULL: g_value_set_double (value, source->priv->battery_energy_full); break; case PROP_BATTERY_ENERGY_FULL_DESIGN: g_value_set_double (value, source->priv->battery_energy_full_design); break; case PROP_BATTERY_ENERGY_RATE: g_value_set_double (value, source->priv->battery_energy_rate); break; case PROP_BATTERY_TIME_TO_EMPTY: g_value_set_int64 (value, source->priv->battery_time_to_empty); break; case PROP_BATTERY_TIME_TO_FULL: g_value_set_int64 (value, source->priv->battery_time_to_full); break; case PROP_BATTERY_PERCENTAGE: g_value_set_double (value, source->priv->battery_percentage); break; case PROP_BATTERY_TECHNOLOGY: g_value_set_string (value, devkit_power_convert_technology_to_text (source->priv->battery_technology)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void devkit_power_source_class_init (DevkitPowerSourceClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); DevkitPowerDeviceClass *device_class = DEVKIT_POWER_DEVICE_CLASS (klass); object_class->finalize = devkit_power_source_finalize; object_class->get_property = get_property; device_class->changed = devkit_power_source_changed; device_class->removed = devkit_power_source_removed; device_class->get_object_path = devkit_power_source_get_object_path; g_type_class_add_private (klass, sizeof (DevkitPowerSourcePrivate)); signals[CHANGED_SIGNAL] = g_signal_new ("changed", G_OBJECT_CLASS_TYPE (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED, 0, NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); dbus_g_object_type_install_info (DEVKIT_TYPE_POWER_SOURCE, &dbus_glib_devkit_power_source_object_info); g_object_class_install_property ( object_class, PROP_NATIVE_PATH, g_param_spec_string ("native-path", NULL, NULL, NULL, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_VENDOR, g_param_spec_string ("vendor", NULL, NULL, NULL, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_MODEL, g_param_spec_string ("model", NULL, NULL, NULL, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_SERIAL, g_param_spec_string ("serial", NULL, NULL, NULL, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_UPDATE_TIME, g_param_spec_uint64 ("update-time", NULL, NULL, 0, G_MAXUINT64, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_TYPE, g_param_spec_string ("type", NULL, NULL, NULL, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_IS_PRESENT, g_param_spec_boolean ("power-supply", NULL, NULL, FALSE, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_LINE_POWER_ONLINE, g_param_spec_boolean ("line-power-online", NULL, NULL, FALSE, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_ENERGY, g_param_spec_double ("battery-energy", NULL, NULL, 0, G_MAXDOUBLE, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_IS_PRESENT, g_param_spec_boolean ("battery-is-present", NULL, NULL, FALSE, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_IS_RECHARGEABLE, g_param_spec_boolean ("battery-is-rechargeable", NULL, NULL, FALSE, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_STATE, g_param_spec_string ("battery-state", NULL, NULL, NULL, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_CAPACITY, g_param_spec_double ("battery-capacity", NULL, NULL, 0, G_MAXDOUBLE, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_ENERGY_EMPTY, g_param_spec_double ("battery-energy-empty", NULL, NULL, 0, G_MAXDOUBLE, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_ENERGY_FULL, g_param_spec_double ("battery-energy-full", NULL, NULL, 0, G_MAXDOUBLE, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_ENERGY_FULL_DESIGN, g_param_spec_double ("battery-energy-full-design", NULL, NULL, 0, G_MAXDOUBLE, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_ENERGY_RATE, g_param_spec_double ("battery-energy-rate", NULL, NULL, -G_MAXDOUBLE, G_MAXDOUBLE, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_TIME_TO_EMPTY, g_param_spec_int64 ("battery-time-to-empty", NULL, NULL, -1, G_MAXINT64, -1, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_TIME_TO_FULL, g_param_spec_int64 ("battery-time-to-full", NULL, NULL, -1, G_MAXINT64, -1, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_PERCENTAGE, g_param_spec_double ("battery-percentage", NULL, NULL, -1, 100, -1, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_BATTERY_TECHNOLOGY, g_param_spec_string ("battery-technology", NULL, NULL, NULL, G_PARAM_READABLE)); } static void devkit_power_source_init (DevkitPowerSource *source) { source->priv = DEVKIT_POWER_SOURCE_GET_PRIVATE (source); devkit_power_source_reset_values (source); } static void devkit_power_source_finalize (GObject *object) { DevkitPowerSource *source; g_return_if_fail (object != NULL); g_return_if_fail (DEVKIT_IS_POWER_SOURCE (object)); source = DEVKIT_POWER_SOURCE (object); g_return_if_fail (source->priv != NULL); g_object_unref (source->priv->d); g_object_unref (source->priv->daemon); g_free (source->priv->native_path); g_free (source->priv->vendor); g_free (source->priv->model); g_free (source->priv->serial); if (source->priv->poll_timer_id > 0) g_source_remove (source->priv->poll_timer_id); G_OBJECT_CLASS (devkit_power_source_parent_class)->finalize (object); } static char * compute_object_path_from_basename (const char *native_path_basename) { char *basename; char *object_path; unsigned int n; /* TODO: need to be more thorough with making proper object * names that won't make D-Bus crash. This is just to cope * with dm-0... */ basename = g_path_get_basename (native_path_basename); for (n = 0; basename[n] != '\0'; n++) if (basename[n] == '-') basename[n] = '_'; object_path = g_build_filename ("/sources/", basename, NULL); g_free (basename); return object_path; } static char * compute_object_path (const char *native_path) { char *basename; char *object_path; basename = g_path_get_basename (native_path); object_path = compute_object_path_from_basename (basename); g_free (basename); return object_path; } static gboolean register_power_source (DevkitPowerSource *source) { DBusConnection *connection; GError *error = NULL; source->priv->system_bus_connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); if (source->priv->system_bus_connection == NULL) { if (error != NULL) { g_critical ("error getting system bus: %s", error->message); g_error_free (error); } goto error; } connection = dbus_g_connection_get_connection (source->priv->system_bus_connection); source->priv->object_path = compute_object_path (source->priv->native_path); dbus_g_connection_register_g_object (source->priv->system_bus_connection, source->priv->object_path, G_OBJECT (source)); source->priv->system_bus_proxy = dbus_g_proxy_new_for_name (source->priv->system_bus_connection, DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS); return TRUE; error: return FALSE; } DevkitPowerSource * devkit_power_source_new (DevkitPowerDaemon *daemon, DevkitDevice *d) { DevkitPowerSource *source; const char *native_path; source = NULL; native_path = devkit_device_get_native_path (d); source = DEVKIT_POWER_SOURCE (g_object_new (DEVKIT_TYPE_POWER_SOURCE, NULL)); source->priv->d = g_object_ref (d); source->priv->daemon = g_object_ref (daemon); source->priv->native_path = g_strdup (native_path); if (sysfs_file_exists (native_path, "online")) { source->priv->type = DEVKIT_POWER_TYPE_LINE_POWER; } else { /* this is correct, UPS and CSR are not in the kernel */ source->priv->type = DEVKIT_POWER_TYPE_BATTERY; } if (!update (source)) { g_object_unref (source); source = NULL; goto out; } if (! register_power_source (DEVKIT_POWER_SOURCE (source))) { g_object_unref (source); source = NULL; goto out; } out: return source; } static void emit_changed (DevkitPowerSource *source) { g_print ("emitting changed on %s\n", source->priv->native_path); g_signal_emit_by_name (source->priv->daemon, "device-changed", source->priv->object_path, NULL); g_signal_emit (source, signals[CHANGED_SIGNAL], 0); } static gboolean devkit_power_source_changed (DevkitPowerDevice *device, DevkitDevice *d, gboolean synthesized) { DevkitPowerSource *source = DEVKIT_POWER_SOURCE (device); gboolean keep_source; g_object_unref (source->priv->d); source->priv->d = g_object_ref (d); keep_source = update (source); /* this 'change' event might prompt us to remove the source */ if (!keep_source) goto out; /* no, it's good .. keep it */ emit_changed (source); out: return keep_source; } void devkit_power_source_removed (DevkitPowerDevice *device) { } static const char * devkit_power_source_get_object_path (DevkitPowerDevice *device) { DevkitPowerSource *source = DEVKIT_POWER_SOURCE (device); return source->priv->object_path; } /*--------------------------------------------------------------------------------------------------------------*/ static gboolean update_line_power (DevkitPowerSource *source) { source->priv->line_power_online = sysfs_get_int (source->priv->native_path, "online"); return TRUE; } static void devkit_power_source_reset_values (DevkitPowerSource *source) { source->priv->battery_energy = -1; source->priv->battery_energy_old = -1; source->priv->battery_energy_full = -1; source->priv->battery_energy_full_design = -1; source->priv->battery_energy_rate = -1; source->priv->battery_percentage = -1; source->priv->battery_capacity = -1; source->priv->battery_time_to_empty = -1; source->priv->battery_time_to_full = -1; source->priv->battery_state = DEVKIT_POWER_STATE_UNKNOWN; source->priv->battery_technology = DEVKIT_POWER_TECHNOLGY_UNKNOWN; source->priv->vendor = NULL; source->priv->model = NULL; source->priv->serial = NULL; source->priv->line_power_online = FALSE; source->priv->battery_is_present = FALSE; source->priv->power_supply = FALSE; source->priv->battery_is_rechargeable = FALSE; source->priv->has_coldplug_values = FALSE; source->priv->battery_energy_old_timespec.tv_sec = 0; } gchar * devkit_power_source_get_id (DevkitPowerSource *source) { GString *string; gchar *id = NULL; /* only valid for devices supplying the system */ if (!source->priv->power_supply) return id; /* only valid for batteries */ if (source->priv->type != DEVKIT_POWER_TYPE_BATTERY) return id; /* we don't have an ID if we are not present */ if (!source->priv->battery_is_present) return id; string = g_string_new (""); /* in an ideal world, model-capacity-serial */ if (source->priv->model != NULL && strlen (source->priv->model) > 2) { g_string_append (string, source->priv->model); g_string_append_c (string, '-'); } if (source->priv->battery_energy_full_design > 0) { g_string_append_printf (string, "%i", (guint) source->priv->battery_energy_full_design); g_string_append_c (string, '-'); } if (source->priv->serial != NULL && strlen (source->priv->serial) > 2) { g_string_append (string, source->priv->serial); g_string_append_c (string, '-'); } /* make sure we are sane */ if (string->len == 0) { /* just use something generic */ g_string_append (string, "generic_id"); } else { /* remove trailing '-' */ g_string_set_size (string, string->len - 1); } /* the id may have invalid chars that need to be replaced */ id = g_string_free (string, FALSE); g_strdelimit (id, "\\\t\"' /", '_'); return id; } static void calculate_battery_rate (DevkitPowerSource *source) { guint time; gdouble energy; GTimeVal now; if (source->priv->battery_energy < 0) return; if (source->priv->battery_energy_old < 0) return; if (source->priv->battery_energy_old == source->priv->battery_energy) return; /* get the time difference */ g_get_current_time (&now); time = now.tv_sec - source->priv->battery_energy_old_timespec.tv_sec; if (time == 0) return; /* get the difference in charge */ energy = source->priv->battery_energy_old - source->priv->battery_energy; if (energy < 0.1) return; /* probably okay */ source->priv->battery_energy_rate = energy * 3600 / time; } static gboolean update_battery (DevkitPowerSource *source) { char *status; gboolean is_charging; gboolean is_discharging; DevkitPowerState battery_state; /* are we present? */ source->priv->battery_is_present = sysfs_get_bool (source->priv->native_path, "present"); if (!source->priv->battery_is_present) { g_free (source->priv->vendor); g_free (source->priv->model); g_free (source->priv->serial); devkit_power_source_reset_values (source); return TRUE; } /* initial values */ if (!source->priv->has_coldplug_values) { char *technology_native; /* when we add via sysfs power_supply class then we know this is true */ source->priv->power_supply = TRUE; /* the ACPI spec is bad at defining battery type constants */ technology_native = g_strstrip (sysfs_get_string (source->priv->native_path, "technology")); source->priv->battery_technology = devkit_power_convert_acpi_technology_to_enum (technology_native); g_free (technology_native); source->priv->vendor = g_strstrip (sysfs_get_string (source->priv->native_path, "manufacturer")); source->priv->model = g_strstrip (sysfs_get_string (source->priv->native_path, "model_name")); source->priv->serial = g_strstrip (sysfs_get_string (source->priv->native_path, "serial_number")); /* assume true for laptops */ source->priv->battery_is_rechargeable = TRUE; /* these don't change at runtime */ source->priv->battery_energy_full = sysfs_get_double (source->priv->native_path, "energy_full") / 1000000.0; source->priv->battery_energy_full_design = sysfs_get_double (source->priv->native_path, "energy_full_design") / 1000000.0; /* the last full cannot be bigger than the design */ if (source->priv->battery_energy_full > source->priv->battery_energy_full_design) source->priv->battery_energy_full = source->priv->battery_energy_full_design; /* calculate how broken our battery is */ source->priv->battery_capacity = source->priv->battery_energy_full_design / source->priv->battery_energy_full * 100.0f; if (source->priv->battery_capacity < 0) source->priv->battery_capacity = 0; if (source->priv->battery_capacity > 100.0) source->priv->battery_capacity = 100.0; /* we only coldplug once, as these values will never change */ source->priv->has_coldplug_values = TRUE; } status = g_strstrip (sysfs_get_string (source->priv->native_path, "status")); is_charging = strcasecmp (status, "charging") == 0; is_discharging = strcasecmp (status, "discharging") == 0; /* really broken battery, assume charging */ if (is_charging && is_discharging) is_discharging = FALSE; /* get the currect charge */ source->priv->battery_energy = sysfs_get_double (source->priv->native_path, "energy_avg") / 1000000.0; if (source->priv->battery_energy == 0) source->priv->battery_energy = sysfs_get_double (source->priv->native_path, "energy_now") / 1000000.0; /* some batteries don't update last_full attribute */ if (source->priv->battery_energy > source->priv->battery_energy_full) source->priv->battery_energy_full = source->priv->battery_energy; source->priv->battery_energy_rate = fabs (sysfs_get_double (source->priv->native_path, "current_now") / 1000000.0); /* ACPI gives out the special 'Ones' value for rate when it's unable * to calculate the true rate. We should set the rate zero, and wait * for the BIOS to stabilise. */ if (source->priv->battery_energy_rate == 0xffff) source->priv->battery_energy_rate = -1; /* sanity check to less than 100W */ if (source->priv->battery_energy_rate > 100*1000) source->priv->battery_energy_rate = -1; /* the hardware reporting failed -- try to calculate this */ if (source->priv->battery_energy_rate < 0) { calculate_battery_rate (source); } /* charging has a negative rate */ if (source->priv->battery_energy_rate > 0 && is_charging) source->priv->battery_energy_rate *= -1.0; /* get a precise percentage */ source->priv->battery_percentage = 100.0 * source->priv->battery_energy / source->priv->battery_energy_full; if (source->priv->battery_percentage < 0) source->priv->battery_percentage = 0; if (source->priv->battery_percentage > 100.0) source->priv->battery_percentage = 100.0; /* calculate a quick and dirty time remaining value */ source->priv->battery_time_to_empty = -1; source->priv->battery_time_to_full = -1; if (source->priv->battery_energy_rate > 0) { if (is_discharging) { source->priv->battery_time_to_empty = 3600 * (source->priv->battery_energy / source->priv->battery_energy_rate); } else if (is_charging) { source->priv->battery_time_to_full = 3600 * ((source->priv->battery_energy_full - source->priv->battery_energy) / source->priv->battery_energy_rate); } } /* check the remaining time is under a set limit, to deal with broken primary batteries rate */ if (source->priv->battery_time_to_empty > (100 * 60 * 60)) source->priv->battery_time_to_empty = -1; if (source->priv->battery_time_to_full > (100 * 60 * 60)) source->priv->battery_time_to_full = -1; /* get the state */ if (is_charging) battery_state = DEVKIT_POWER_STATE_CHARGING; else if (is_discharging) battery_state = DEVKIT_POWER_STATE_DISCHARGING; else if (source->priv->battery_percentage > DK_POWER_MIN_CHARGED_PERCENTAGE) battery_state = DEVKIT_POWER_STATE_FULLY_CHARGED; else battery_state = DEVKIT_POWER_STATE_EMPTY; /* set the old status */ source->priv->battery_energy_old = source->priv->battery_energy; g_get_current_time (&source->priv->battery_energy_old_timespec); /* we changed state */ if (source->priv->battery_state != battery_state) { source->priv->battery_energy_old = -1; source->priv->battery_state = battery_state; } g_free (status); return TRUE; } static gboolean _poll_battery (DevkitPowerSource *source) { g_warning ("No updates on source %s for 30 seconds; forcing update", source->priv->native_path); source->priv->poll_timer_id = 0; update (source); emit_changed (source); return FALSE; } static gboolean update (DevkitPowerSource *source) { gboolean ret; if (source->priv->poll_timer_id > 0) { g_source_remove (source->priv->poll_timer_id); source->priv->poll_timer_id = 0; } g_get_current_time (&(source->priv->update_time)); switch (source->priv->type) { case DEVKIT_POWER_TYPE_LINE_POWER: ret = update_line_power (source); break; case DEVKIT_POWER_TYPE_BATTERY: ret = update_battery (source); /* Seems that we don't get change uevents from the * kernel on some BIOS types; set up a timer to poll * * TODO: perhaps only do this if we do not get frequent updates. */ source->priv->poll_timer_id = g_timeout_add_seconds (30, (GSourceFunc) _poll_battery, source); break; default: g_assert_not_reached (); break; } return ret; } /*--------------------------------------------------------------------------------------------------------------*/ gboolean devkit_power_source_refresh (DevkitPowerSource *power_source, DBusGMethodInvocation *context) { update (power_source); dbus_g_method_return (context); return TRUE; }