wavecom: implement custom power up sequence

plugins/wavecom/mm-broadband-modem-wavecom.c

@@ -27,6 +27,7 @@
 
 #include "ModemManager.h"
 #include "mm-log.h"
+#include "mm-modem-helpers.h"
 #include "mm-iface-modem.h"
 #include "mm-base-modem-at.h"
 #include "mm-broadband-modem-wavecom.h"
@@ -61,6 +62,98 @@ setup_flow_control (MMIfaceModem *self,
                               user_data);
 }
 
+/*****************************************************************************/
+/* Modem power up (Modem interface) */
+
+static gboolean
+modem_power_up_finish (MMIfaceModem *self,
+                       GAsyncResult *res,
+                       GError **error)
+{
+    return !g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (res), error);
+}
+
+static void
+full_functionality_status_ready (MMBaseModem *self,
+                                 GAsyncResult *res,
+                                 GSimpleAsyncResult *simple)
+{
+    GError *error = NULL;
+
+    if (!mm_base_modem_at_command_finish (MM_BASE_MODEM (self), res, &error))
+        g_simple_async_result_take_error (simple, error);
+    else
+        g_simple_async_result_set_op_res_gboolean (simple, TRUE);
+    g_simple_async_result_complete (simple);
+    g_object_unref (simple);
+}
+
+static void
+get_current_functionality_status_ready (MMBaseModem *self,
+                                        GAsyncResult *res,
+                                        GSimpleAsyncResult *simple)
+{
+    const gchar *response;
+    GError *error = NULL;
+
+    response = mm_base_modem_at_command_finish (MM_BASE_MODEM (self), res, &error);
+    if (!response) {
+        mm_warn ("Failed checking if power-up command is needed: '%s'. "
+                 "Will assume it isn't.",
+                 error->message);
+        g_error_free (error);
+        /* On error, just assume we don't need the power-up command */
+        g_simple_async_result_set_op_res_gboolean (simple, TRUE);
+        g_simple_async_result_complete (simple);
+        g_object_unref (simple);
+        return;
+    }
+
+    response = mm_strip_tag (response, "+CFUN:");
+    if (response && *response == '1') {
+        /* If reported functionality status is '1', then we do not need to
+         * issue the power-up command. Otherwise, do it. */
+        mm_dbg ("Already in full functionality status, skipping power-up command");
+        g_simple_async_result_set_op_res_gboolean (simple, TRUE);
+        g_simple_async_result_complete (simple);
+        g_object_unref (simple);
+        return;
+    }
+
+    mm_warn ("Not in full functionality status, power-up command is needed. "
+             "Note that it may reboot the modem.");
+
+    /* Try to go to full functionality mode without rebooting the system.
+     * Works well if we previously switched off the power with CFUN=4
+     */
+    mm_base_modem_at_command (MM_BASE_MODEM (self),
+                              "+CFUN=1,0",
+                              3,
+                              FALSE,
+                              (GAsyncReadyCallback)full_functionality_status_ready,
+                              simple);
+}
+
+static void
+modem_power_up (MMIfaceModem *self,
+                GAsyncReadyCallback callback,
+                gpointer user_data)
+{
+    GSimpleAsyncResult *result;
+
+    result = g_simple_async_result_new (G_OBJECT (self),
+                                        callback,
+                                        user_data,
+                                        modem_power_up);
+
+    mm_base_modem_at_command (MM_BASE_MODEM (self),
+                              "+CFUN?",
+                              3,
+                              FALSE,
+                              (GAsyncReadyCallback)get_current_functionality_status_ready,
+                              result);
+}
+
 /*****************************************************************************/
 /* Modem power down (Modem interface) */
 
@@ -115,6 +208,8 @@ iface_modem_init (MMIfaceModem *iface)
 {
     iface->setup_flow_control = setup_flow_control;
     iface->setup_flow_control_finish = setup_flow_control_finish;
+    iface->modem_power_up = modem_power_up;
+    iface->modem_power_up_finish = modem_power_up_finish;
     iface->modem_power_down = modem_power_down;
     iface->modem_power_down_finish = modem_power_down_finish;
 }