policy: Add AutoEnable config option

This option is used to configure policy for auto enabling adapters when
found. This includes adapters found on start as well as adapters that
are plugged in later on.

Some distributions use legacy "hciconfig hci0 up" in boot-scripts to
automatically enable controllers on start. But that is causing SMP
kernel code to not being properly initialized.

This patch allows distributions to automatically enable adapters in
race free manner even if no agent is provided eg. in login screen.

1 files changed, 27 insertions, 2 deletions

diff --git a/plugins/policy.c b/plugins/policy.c
index 6bb826886..218a3ed25 100644
--- a/plugins/policy.c
+++ b/plugins/policy.c
@@ -80,6 +80,8 @@ static GSList *reconnects = NULL;
 static unsigned int service_id = 0;
 static GSList *devices = NULL;
 
+static bool auto_enable = false;
+
 struct policy_data {
 	struct btd_device *dev;
 
@@ -743,6 +745,20 @@ static void conn_fail_cb(struct btd_device *dev, uint8_t status)
 	reconnect_set_timer(reconnect);
 }
 
+static int policy_adapter_probe(struct btd_adapter *adapter)
+{
+	DBG("");
+
+	btd_adapter_restore_powered(adapter);
+
+	return 0;
+}
+
+static struct btd_adapter_driver policy_driver = {
+	.name	= "policy",
+	.probe	= policy_adapter_probe,
+};
+
 static int policy_init(void)
 {
 	GError *gerr = NULL;
@@ -758,7 +774,7 @@ static int policy_init(void)
 						sizeof(*reconnect_intervals);
 		reconnect_intervals = g_memdup(default_intervals,
 						reconnect_intervals_len);
-		goto add_cb;
+		goto done;
 	}
 
 	reconnect_uuids = g_key_file_get_string_list(conf, "Policy",
@@ -788,12 +804,18 @@ static int policy_init(void)
 						reconnect_intervals_len);
 	}
 
-add_cb:
+	auto_enable = g_key_file_get_boolean(conf, "Policy", "AutoEnable",
+									NULL);
+
+done:
 	if (reconnect_uuids && reconnect_uuids[0] && reconnect_attempts) {
 		btd_add_disconnect_cb(disconnect_cb);
 		btd_add_conn_fail_cb(conn_fail_cb);
 	}
 
+	if (auto_enable)
+		btd_register_adapter_driver(&policy_driver);
+
 	return 0;
 }
 
@@ -812,6 +834,9 @@ static void policy_exit(void)
 	g_slist_free_full(devices, policy_remove);
 
 	btd_service_remove_state_cb(service_id);
+
+	if (auto_enable)
+		btd_unregister_adapter_driver(&policy_driver);
 }
 
 BLUETOOTH_PLUGIN_DEFINE(policy, VERSION, BLUETOOTH_PLUGIN_PRIORITY_DEFAULT,