iface-modem: interface can be disabled

The Modem interface can be disabled, going from enabled back to initialized. The
disabling process will include closing the ports opened during the enabling.

2 files changed, 115 insertions, 0 deletions

diff --git a/src/mm-iface-modem.c b/src/mm-iface-modem.c
index a9197bcd..b3b287ff 100644
--- a/src/mm-iface-modem.c
+++ b/src/mm-iface-modem.c
@@ -32,6 +32,9 @@ static void interface_initialization_step (InitializationContext *ctx);
 typedef struct _EnablingContext EnablingContext;
 static void interface_enabling_step (EnablingContext *ctx);
 
+typedef struct _DisablingContext DisablingContext;
+static void interface_disabling_step (DisablingContext *ctx);
+
 typedef enum {
     INTERFACE_STATUS_SHUTDOWN,
     INTERFACE_STATUS_INITIALIZING,
@@ -750,6 +753,110 @@ mm_iface_modem_signal_quality_check (MMIfaceModem *self,
 /*****************************************************************************/
 
 typedef enum {
+    DISABLING_STEP_FIRST,
+    DISABLING_STEP_LAST
+} DisablingStep;
+
+struct _DisablingContext {
+    MMIfaceModem *self;
+    MMAtSerialPort *primary;
+    DisablingStep step;
+    MMModemState previous_state;
+    gboolean disabled;
+    GSimpleAsyncResult *result;
+    MmGdbusModem *skeleton;
+};
+
+static DisablingContext *
+disabling_context_new (MMIfaceModem *self,
+                       GAsyncReadyCallback callback,
+                       gpointer user_data)
+{
+    DisablingContext *ctx;
+
+    ctx = g_new0 (DisablingContext, 1);
+    ctx->self = g_object_ref (self);
+    ctx->primary = g_object_ref (mm_base_modem_get_port_primary (MM_BASE_MODEM (self)));
+    ctx->result = g_simple_async_result_new (G_OBJECT (self),
+                                             callback,
+                                             user_data,
+                                             disabling_context_new);
+    ctx->step = DISABLING_STEP_FIRST;
+    g_object_get (ctx->self,
+                  MM_IFACE_MODEM_DBUS_SKELETON, &ctx->skeleton,
+                  MM_IFACE_MODEM_STATE, &ctx->previous_state,
+                  NULL);
+    g_assert (ctx->skeleton != NULL);
+
+    update_state (ctx->self,
+                  MM_MODEM_STATE_DISABLING,
+                  MM_MODEM_STATE_CHANGE_REASON_USER_REQUESTED);
+
+    return ctx;
+}
+
+static void
+disabling_context_complete_and_free (DisablingContext *ctx)
+{
+    g_simple_async_result_complete_in_idle (ctx->result);
+
+    if (ctx->disabled)
+        update_state (ctx->self,
+                      MM_MODEM_STATE_DISABLED,
+                      MM_MODEM_STATE_CHANGE_REASON_USER_REQUESTED);
+    else
+        /* Fallback to previous state */
+        update_state (ctx->self,
+                      ctx->previous_state,
+                      MM_MODEM_STATE_CHANGE_REASON_UNKNOWN);
+
+    g_object_unref (ctx->self);
+    g_object_unref (ctx->primary);
+    g_object_unref (ctx->result);
+    g_object_unref (ctx->skeleton);
+    g_free (ctx);
+}
+
+gboolean
+mm_iface_modem_disable_finish (MMIfaceModem *self,
+                              GAsyncResult *res,
+                              GError **error)
+{
+    return !g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (res), error);
+}
+
+static void
+interface_disabling_step (DisablingContext *ctx)
+{
+    switch (ctx->step) {
+    case DISABLING_STEP_FIRST:
+        /* Fall down to next step */
+        ctx->step++;
+
+    case DISABLING_STEP_LAST:
+        /* We are done without errors! */
+        g_simple_async_result_set_op_res_gboolean (ctx->result, TRUE);
+        ctx->disabled = TRUE;
+        disabling_context_complete_and_free (ctx);
+        return;
+    }
+
+    g_assert_not_reached ();
+}
+
+void
+mm_iface_modem_disable (MMIfaceModem *self,
+                        GAsyncReadyCallback callback,
+                        gpointer user_data)
+{
+    interface_disabling_step (disabling_context_new (self,
+                                                     callback,
+                                                     user_data));
+}
+
+/*****************************************************************************/
+
+typedef enum {
     ENABLING_STEP_FIRST,
     ENABLING_STEP_OPEN_PORT,
     ENABLING_STEP_FLASH_PORT,
diff --git a/src/mm-iface-modem.h b/src/mm-iface-modem.h
index 6f02f399..d69dd8fd 100644
--- a/src/mm-iface-modem.h
+++ b/src/mm-iface-modem.h
@@ -254,6 +254,14 @@ gboolean mm_iface_modem_enable_finish (MMIfaceModem *self,
                                        GAsyncResult *res,
                                        GError **error);
 
+/* Disable Modem interface (async) */
+void     mm_iface_modem_disable        (MMIfaceModem *self,
+                                        GAsyncReadyCallback callback,
+                                        gpointer user_data);
+gboolean mm_iface_modem_disable_finish (MMIfaceModem *self,
+                                        GAsyncResult *res,
+                                        GError **error);
+
 /* Shutdown Modem interface */
 gboolean mm_iface_modem_shutdown (MMIfaceModem *self,
                                   GError **error);