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migrate powerd plugin from method call to signal

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Allow fwupd to use the BatteryStatePoll signal instead
of the GetBatteryState method call so that fwupd does
not need to run a timer itself and is automatically updated
on power connect/disconnect.

Change-Id: I81aad6a5933fa267473a83d1b97f4638235b155a
This commit is contained in:
Twain Byrnes 2021-08-10 15:58:28 +00:00 committed by Richard Hughes
parent 5d337e72a6
commit 84b06ed258
1 changed files with 28 additions and 23 deletions
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51
plugins/powerd/fu-plugin-powerd.c
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@ -65,31 +65,15 @@ fu_plugin_destroy(FuPlugin *plugin)
g_object_unref(data->proxy);
}
static gboolean
fu_plugin_powerd_refresh_cb(FuPlugin *plugin)
static void
fu_plugin_powerd_rescan(FuPlugin *plugin, GVariant *parameters)
{
FuPluginData *data = fu_plugin_get_data(plugin);
FuContext *ctx = fu_plugin_get_context(plugin);
guint32 power_type;
guint32 current_state;
gdouble current_level;
g_autoptr(GVariant) powerd_response = NULL;
/* retrieving battery info from "GetBatteryState" method call to powerd */
powerd_response = g_dbus_proxy_call_sync(data->proxy,
"GetBatteryState",
NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
G_SOURCE_REMOVE);
if (powerd_response == NULL) {
g_debug("battery information was not loaded");
return G_SOURCE_REMOVE;
}
/* parse and use for battery-check conditions */
g_variant_get(powerd_response, "(uud)", &power_type, &current_state, &current_level);
g_variant_get(parameters, "(uud)", &power_type, &current_state, &current_level);
/* checking if percentage is invalid */
if (current_level < 1 || current_level > 100)
@ -97,8 +81,18 @@ fu_plugin_powerd_refresh_cb(FuPlugin *plugin)
fu_context_set_battery_state(ctx, current_state);
fu_context_set_battery_level(ctx, current_level);
}
return G_SOURCE_CONTINUE;
static void
fu_plugin_powerd_proxy_changed_cb(GDBusProxy *proxy,
gchar *sender_name,
gchar *signal_name,
GVariant *parameters,
FuPlugin *plugin)
{
if (!g_str_equal(signal_name, "BatteryStatePoll"))
return;
fu_plugin_powerd_rescan(plugin, parameters);
}
gboolean
@ -121,7 +115,7 @@ fu_plugin_startup(FuPlugin *plugin, GError **error)
error);
if (data->proxy == NULL) {
g_prefix_error(error, "failed to establish proxy: ");
g_prefix_error(error, "failed to connect to powerd: ");
return FALSE;
}
name_owner = g_dbus_proxy_get_name_owner(data->proxy);
@ -134,8 +128,19 @@ fu_plugin_startup(FuPlugin *plugin, GError **error)
return FALSE;
}
/* start a timer to repeatedly run fu_plugin_powerd_refresh_cb at a set interval */
g_timeout_add_seconds(5, G_SOURCE_FUNC(fu_plugin_powerd_refresh_cb), plugin);
fu_plugin_powerd_rescan(plugin,
g_dbus_proxy_call_sync(data->proxy,
"GetBatteryState",
NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
G_SOURCE_REMOVE));
g_signal_connect(data->proxy,
"g-signal",
G_CALLBACK(fu_plugin_powerd_proxy_changed_cb),
plugin);
return TRUE;
}