build: move plugins directory to src/plugins

We are going to allow including the plugin sources built within the
ModemManager daemon binary; moving the sources within the daemon
sources directory makes it easier.

8 files changed, 620 insertions, 0 deletions

diff --git a/src/plugins/linktop/77-mm-linktop-port-types.rules b/src/plugins/linktop/77-mm-linktop-port-types.rules
new file mode 100644
index 00000000..dc2ef0d6
--- /dev/null
+++ b/src/plugins/linktop/77-mm-linktop-port-types.rules
@@ -0,0 +1,16 @@
+# do not edit this file, it will be overwritten on update
+
+ACTION!="add|change|move|bind", GOTO="mm_linktop_end"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="230d", GOTO="mm_linktop_generic"
+GOTO="mm_linktop_end"
+
+LABEL="mm_linktop_generic"
+SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}=="?*", ENV{.MM_USBIFNUM}="$attr{bInterfaceNumber}"
+
+# Linktop HSPADataCard
+#  ttyACM0 (if #1): Data port
+#  ttyACM1 (if #3): Primary AT port
+ATTRS{idVendor}=="230d", ATTRS{idProduct}=="0001", ENV{.MM_USBIFNUM}=="01", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_PPP}="1"
+ATTRS{idVendor}=="230d", ATTRS{idProduct}=="0001", ENV{.MM_USBIFNUM}=="03", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_PRIMARY}="1"
+
+LABEL="mm_linktop_end"
diff --git a/src/plugins/linktop/mm-broadband-modem-linktop.c b/src/plugins/linktop/mm-broadband-modem-linktop.c
new file mode 100644
index 00000000..a83682c8
--- /dev/null
+++ b/src/plugins/linktop/mm-broadband-modem-linktop.c
@@ -0,0 +1,269 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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:
+ *
+ * Copyright (C) 2008 - 2009 Novell, Inc.
+ * Copyright (C) 2009 - 2012 Red Hat, Inc.
+ * Copyright (C) 2012 Aleksander Morgado <aleksander@gnu.org>
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#define _LIBMM_INSIDE_MM
+#include <libmm-glib.h>
+
+#include "ModemManager.h"
+#include "mm-serial-parsers.h"
+#include "mm-modem-helpers.h"
+#include "mm-iface-modem.h"
+#include "mm-base-modem-at.h"
+#include "mm-broadband-modem-linktop.h"
+#include "mm-modem-helpers-linktop.h"
+
+static void iface_modem_init (MMIfaceModem *iface);
+
+static MMIfaceModem *iface_modem_parent;
+
+G_DEFINE_TYPE_EXTENDED (MMBroadbandModemLinktop, mm_broadband_modem_linktop, MM_TYPE_BROADBAND_MODEM, 0,
+                        G_IMPLEMENT_INTERFACE (MM_TYPE_IFACE_MODEM, iface_modem_init))
+
+/*****************************************************************************/
+/* Load supported modes (Modem interface) */
+
+static GArray *
+load_supported_modes_finish (MMIfaceModem *self,
+                             GAsyncResult *res,
+                             GError **error)
+{
+    return g_task_propagate_pointer (G_TASK (res), error);
+}
+
+static void
+parent_load_supported_modes_ready (MMIfaceModem *self,
+                                   GAsyncResult *res,
+                                   GTask *task)
+{
+    GError *error = NULL;
+    GArray *all;
+    GArray *combinations;
+    GArray *filtered;
+    MMModemModeCombination mode;
+
+    all = iface_modem_parent->load_supported_modes_finish (self, res, &error);
+    if (!all) {
+        g_task_return_error (task, error);
+        g_object_unref (task);
+        return;
+    }
+
+    /* Build list of combinations */
+    combinations = g_array_sized_new (FALSE, FALSE, sizeof (MMModemModeCombination), 3);
+
+    /* 2G only */
+    mode.allowed = MM_MODEM_MODE_2G;
+    mode.preferred = MM_MODEM_MODE_NONE;
+    g_array_append_val (combinations, mode);
+    /* 3G only */
+    mode.allowed = MM_MODEM_MODE_3G;
+    mode.preferred = MM_MODEM_MODE_NONE;
+    g_array_append_val (combinations, mode);
+    /* 2G and 3G */
+    mode.allowed = (MM_MODEM_MODE_2G | MM_MODEM_MODE_3G);
+    mode.preferred = MM_MODEM_MODE_NONE;
+    g_array_append_val (combinations, mode);
+
+    /* Filter out those unsupported modes */
+    filtered = mm_filter_supported_modes (all, combinations, self);
+    g_array_unref (all);
+    g_array_unref (combinations);
+
+    g_task_return_pointer (task, filtered, (GDestroyNotify) g_array_unref);
+    g_object_unref (task);
+}
+
+static void
+load_supported_modes (MMIfaceModem *self,
+                      GAsyncReadyCallback callback,
+                      gpointer user_data)
+{
+    /* Run parent's loading */
+    iface_modem_parent->load_supported_modes (
+        MM_IFACE_MODEM (self),
+        (GAsyncReadyCallback)parent_load_supported_modes_ready,
+        g_task_new (self, NULL, callback, user_data));
+}
+
+/*****************************************************************************/
+/* Load initial allowed/preferred modes (Modem interface) */
+
+static gboolean
+load_current_modes_finish (MMIfaceModem *self,
+                           GAsyncResult *res,
+                           MMModemMode *allowed,
+                           MMModemMode *preferred,
+                           GError **error)
+{
+    const gchar *response;
+
+    response = mm_base_modem_at_command_finish (MM_BASE_MODEM (self), res, error);
+    if (!response || !mm_linktop_parse_cfun_query_current_modes (response, allowed, error))
+        return FALSE;
+
+    /* None preferred always */
+    *preferred = MM_MODEM_MODE_NONE;
+
+    return TRUE;
+}
+
+static void
+load_current_modes (MMIfaceModem *self,
+                    GAsyncReadyCallback callback,
+                    gpointer user_data)
+{
+    mm_base_modem_at_command (MM_BASE_MODEM (self),
+                              "+CFUN?",
+                              3,
+                              FALSE,
+                              callback,
+                              user_data);
+}
+
+/*****************************************************************************/
+/* Set allowed modes (Modem interface) */
+
+static gboolean
+set_current_modes_finish (MMIfaceModem *self,
+                          GAsyncResult *res,
+                          GError **error)
+{
+    return g_task_propagate_boolean (G_TASK (res), error);
+}
+
+static void
+allowed_mode_update_ready (MMBroadbandModemLinktop *self,
+                           GAsyncResult *res,
+                           GTask *task)
+{
+    GError *error = NULL;
+
+    mm_base_modem_at_command_finish (MM_BASE_MODEM (self), res, &error);
+    if (error)
+        /* Let the error be critical. */
+        g_task_return_error (task, error);
+    else
+        g_task_return_boolean (task, TRUE);
+
+    g_object_unref (task);
+}
+
+static void
+set_current_modes (MMIfaceModem *self,
+                   MMModemMode allowed,
+                   MMModemMode preferred,
+                   GAsyncReadyCallback callback,
+                   gpointer user_data)
+{
+    GTask *task;
+    gchar *command;
+    gint linktop_mode = -1;
+
+    task = g_task_new (self, NULL, callback, user_data);
+
+    if (allowed == MM_MODEM_MODE_2G)
+        linktop_mode = LINKTOP_MODE_2G;
+    else if (allowed == MM_MODEM_MODE_3G)
+        linktop_mode = LINKTOP_MODE_3G;
+    else if ((allowed == (MM_MODEM_MODE_2G | MM_MODEM_MODE_3G)) &&
+             (preferred == MM_MODEM_MODE_NONE))
+        linktop_mode = LINKTOP_MODE_ANY;
+    else if ((allowed == MM_MODEM_MODE_ANY &&
+              preferred == MM_MODEM_MODE_NONE))
+        linktop_mode = LINKTOP_MODE_ANY;
+
+    if (linktop_mode < 0) {
+        gchar *allowed_str;
+        gchar *preferred_str;
+
+        allowed_str = mm_modem_mode_build_string_from_mask (allowed);
+        preferred_str = mm_modem_mode_build_string_from_mask (preferred);
+        g_task_return_new_error (task,
+                                 MM_CORE_ERROR,
+                                 MM_CORE_ERROR_FAILED,
+                                 "Requested mode (allowed: '%s', preferred: '%s') not "
+                                 "supported by the modem.",
+                                 allowed_str,
+                                 preferred_str);
+        g_object_unref (task);
+        g_free (allowed_str);
+        g_free (preferred_str);
+        return;
+    }
+
+    command = g_strdup_printf ("AT+CFUN=%d", linktop_mode);
+    mm_base_modem_at_command (
+        MM_BASE_MODEM (self),
+        command,
+        3,
+        FALSE,
+        (GAsyncReadyCallback)allowed_mode_update_ready,
+        task);
+    g_free (command);
+}
+
+/*****************************************************************************/
+
+MMBroadbandModemLinktop *
+mm_broadband_modem_linktop_new (const gchar *device,
+                                const gchar **drivers,
+                                const gchar *plugin,
+                                guint16 vendor_id,
+                                guint16 product_id)
+{
+    return g_object_new (MM_TYPE_BROADBAND_MODEM_LINKTOP,
+                         MM_BASE_MODEM_DEVICE, device,
+                         MM_BASE_MODEM_DRIVERS, drivers,
+                         MM_BASE_MODEM_PLUGIN, plugin,
+                         MM_BASE_MODEM_VENDOR_ID, vendor_id,
+                         MM_BASE_MODEM_PRODUCT_ID, product_id,
+                         /* Generic bearer supports AT only */
+                         MM_BASE_MODEM_DATA_NET_SUPPORTED, FALSE,
+                         MM_BASE_MODEM_DATA_TTY_SUPPORTED, TRUE,
+                         NULL);
+}
+
+static void
+mm_broadband_modem_linktop_init (MMBroadbandModemLinktop *self)
+{
+}
+
+static void
+iface_modem_init (MMIfaceModem *iface)
+{
+    iface_modem_parent = g_type_interface_peek_parent (iface);
+
+    iface->load_supported_modes = load_supported_modes;
+    iface->load_supported_modes_finish = load_supported_modes_finish;
+    iface->load_current_modes = load_current_modes;
+    iface->load_current_modes_finish = load_current_modes_finish;
+    iface->set_current_modes = set_current_modes;
+    iface->set_current_modes_finish = set_current_modes_finish;
+}
+
+static void
+mm_broadband_modem_linktop_class_init (MMBroadbandModemLinktopClass *klass)
+{
+}
diff --git a/src/plugins/linktop/mm-broadband-modem-linktop.h b/src/plugins/linktop/mm-broadband-modem-linktop.h
new file mode 100644
index 00000000..385a20b8
--- /dev/null
+++ b/src/plugins/linktop/mm-broadband-modem-linktop.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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:
+ *
+ * Copyright (C) 2008 - 2009 Novell, Inc.
+ * Copyright (C) 2009 - 2012 Red Hat, Inc.
+ * Copyright (C) 2012 Aleksander Morgado <aleksander@gnu.org>
+ */
+
+#ifndef MM_BROADBAND_MODEM_LINKTOP_H
+#define MM_BROADBAND_MODEM_LINKTOP_H
+
+#include "mm-broadband-modem.h"
+
+#define MM_TYPE_BROADBAND_MODEM_LINKTOP            (mm_broadband_modem_linktop_get_type ())
+#define MM_BROADBAND_MODEM_LINKTOP(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), MM_TYPE_BROADBAND_MODEM_LINKTOP, MMBroadbandModemLinktop))
+#define MM_BROADBAND_MODEM_LINKTOP_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  MM_TYPE_BROADBAND_MODEM_LINKTOP, MMBroadbandModemLinktopClass))
+#define MM_IS_BROADBAND_MODEM_LINKTOP(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MM_TYPE_BROADBAND_MODEM_LINKTOP))
+#define MM_IS_BROADBAND_MODEM_LINKTOP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  MM_TYPE_BROADBAND_MODEM_LINKTOP))
+#define MM_BROADBAND_MODEM_LINKTOP_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  MM_TYPE_BROADBAND_MODEM_LINKTOP, MMBroadbandModemLinktopClass))
+
+typedef struct _MMBroadbandModemLinktop MMBroadbandModemLinktop;
+typedef struct _MMBroadbandModemLinktopClass MMBroadbandModemLinktopClass;
+
+struct _MMBroadbandModemLinktop {
+    MMBroadbandModem parent;
+};
+
+struct _MMBroadbandModemLinktopClass{
+    MMBroadbandModemClass parent;
+};
+
+GType mm_broadband_modem_linktop_get_type (void);
+
+MMBroadbandModemLinktop *mm_broadband_modem_linktop_new (const gchar *device,
+                                                         const gchar **drivers,
+                                                         const gchar *plugin,
+                                                         guint16 vendor_id,
+                                                         guint16 product_id);
+
+#endif /* MM_BROADBAND_MODEM_LINKTOP_H */
diff --git a/src/plugins/linktop/mm-modem-helpers-linktop.c b/src/plugins/linktop/mm-modem-helpers-linktop.c
new file mode 100644
index 00000000..2ca46bb6
--- /dev/null
+++ b/src/plugins/linktop/mm-modem-helpers-linktop.c
@@ -0,0 +1,54 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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:
+ *
+ * Copyright (C) 2008 - 2009 Novell, Inc.
+ * Copyright (C) 2009 - 2016 Red Hat, Inc.
+ * Copyright (C) 2016 Aleksander Morgado <aleksander@aleksander.es>
+ */
+
+#include "mm-modem-helpers.h"
+#include "mm-modem-helpers-linktop.h"
+
+/*****************************************************************************/
+
+gboolean
+mm_linktop_parse_cfun_query_current_modes (const gchar  *response,
+                                           MMModemMode  *allowed,
+                                           GError      **error)
+{
+    guint state;
+
+    g_assert (allowed);
+
+    if (!mm_3gpp_parse_cfun_query_response (response, &state, error))
+        return FALSE;
+
+    switch (state) {
+    case LINKTOP_MODE_OFFLINE:
+    case LINKTOP_MODE_LOW_POWER:
+        *allowed = MM_MODEM_MODE_NONE;
+        return TRUE;
+    case LINKTOP_MODE_2G:
+        *allowed = MM_MODEM_MODE_2G;
+        return TRUE;
+    case LINKTOP_MODE_3G:
+        *allowed = MM_MODEM_MODE_3G;
+        return TRUE;
+    case LINKTOP_MODE_ANY:
+        *allowed = (MM_MODEM_MODE_2G | MM_MODEM_MODE_3G);
+        return TRUE;
+    default:
+        g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_FAILED,
+                     "Unknown linktop +CFUN current mode: %u", state);
+        return FALSE;
+    }
+}
diff --git a/src/plugins/linktop/mm-modem-helpers-linktop.h b/src/plugins/linktop/mm-modem-helpers-linktop.h
new file mode 100644
index 00000000..69fa7ee2
--- /dev/null
+++ b/src/plugins/linktop/mm-modem-helpers-linktop.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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:
+ *
+ * Copyright (C) 2008 - 2009 Novell, Inc.
+ * Copyright (C) 2009 - 2016 Red Hat, Inc.
+ * Copyright (C) 2016 Aleksander Morgado <aleksander@aleksander.es>
+ */
+
+#ifndef MM_MODEM_HELPERS_LINKTOP_H
+#define MM_MODEM_HELPERS_LINKTOP_H
+
+#include <glib.h>
+
+#include <ModemManager.h>
+#define _LIBMM_INSIDE_MM
+#include <libmm-glib.h>
+
+typedef enum {
+    LINKTOP_MODE_OFFLINE   = 0,
+    LINKTOP_MODE_ANY       = 1,
+    LINKTOP_MODE_LOW_POWER = 4,
+    LINKTOP_MODE_2G        = 5,
+    LINKTOP_MODE_3G        = 6,
+} MMLinktopMode;
+
+/* AT+CFUN? response parsers */
+gboolean mm_linktop_parse_cfun_query_current_modes (const gchar  *response,
+                                                    MMModemMode  *allowed,
+                                                    GError      **error);
+
+#endif  /* MM_MODEM_HELPERS_LINKTOP_H */
diff --git a/src/plugins/linktop/mm-plugin-linktop.c b/src/plugins/linktop/mm-plugin-linktop.c
new file mode 100644
index 00000000..8276e59f
--- /dev/null
+++ b/src/plugins/linktop/mm-plugin-linktop.c
@@ -0,0 +1,79 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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:
+ *
+ * Copyright (C) 2008 - 2009 Novell, Inc.
+ * Copyright (C) 2009 - 2012 Red Hat, Inc.
+ * Copyright (C) 2012 Aleksander Morgado <aleksander@gnu.org>
+ */
+
+#include <string.h>
+#include <gmodule.h>
+
+#define _LIBMM_INSIDE_MM
+#include <libmm-glib.h>
+
+#include "mm-plugin-linktop.h"
+#include "mm-broadband-modem-linktop.h"
+
+G_DEFINE_TYPE (MMPluginLinktop, mm_plugin_linktop, MM_TYPE_PLUGIN)
+
+MM_PLUGIN_DEFINE_MAJOR_VERSION
+MM_PLUGIN_DEFINE_MINOR_VERSION
+
+/*****************************************************************************/
+
+static MMBaseModem *
+create_modem (MMPlugin *self,
+              const gchar *uid,
+              const gchar **drivers,
+              guint16 vendor,
+              guint16 product,
+              guint16 subsystem_vendor,
+              GList *probes,
+              GError **error)
+{
+    return MM_BASE_MODEM (mm_broadband_modem_linktop_new (uid,
+                                                          drivers,
+                                                          mm_plugin_get_name (self),
+                                                          vendor,
+                                                          product));
+}
+
+/*****************************************************************************/
+
+G_MODULE_EXPORT MMPlugin *
+mm_plugin_create (void)
+{
+    static const gchar *subsystems[] = { "tty", NULL };
+    static const guint16 vendor_ids[] = { 0x230d, 0 };
+
+    return MM_PLUGIN (
+        g_object_new (MM_TYPE_PLUGIN_LINKTOP,
+                      MM_PLUGIN_NAME,               MM_MODULE_NAME,
+                      MM_PLUGIN_ALLOWED_SUBSYSTEMS, subsystems,
+                      MM_PLUGIN_ALLOWED_VENDOR_IDS, vendor_ids,
+                      MM_PLUGIN_ALLOWED_AT,         TRUE,
+                      NULL));
+}
+
+static void
+mm_plugin_linktop_init (MMPluginLinktop *self)
+{
+}
+
+static void
+mm_plugin_linktop_class_init (MMPluginLinktopClass *klass)
+{
+    MMPluginClass *plugin_class = MM_PLUGIN_CLASS (klass);
+
+    plugin_class->create_modem = create_modem;
+}
diff --git a/src/plugins/linktop/mm-plugin-linktop.h b/src/plugins/linktop/mm-plugin-linktop.h
new file mode 100644
index 00000000..6c8e5789
--- /dev/null
+++ b/src/plugins/linktop/mm-plugin-linktop.h
@@ -0,0 +1,42 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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:
+ *
+ * Copyright (C) 2008 - 2009 Novell, Inc.
+ * Copyright (C) 2009 - 2012 Red Hat, Inc.
+ * Copyright (C) 2012 Aleksander Morgado <aleksander@gnu.org>
+ */
+
+#ifndef MM_PLUGIN_LINKTOP_H
+#define MM_PLUGIN_LINKTOP_H
+
+#include "mm-plugin.h"
+
+#define MM_TYPE_PLUGIN_LINKTOP            (mm_plugin_linktop_get_type ())
+#define MM_PLUGIN_LINKTOP(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), MM_TYPE_PLUGIN_LINKTOP, MMPluginLinktop))
+#define MM_PLUGIN_LINKTOP_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  MM_TYPE_PLUGIN_LINKTOP, MMPluginLinktopClass))
+#define MM_IS_PLUGIN_LINKTOP(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MM_TYPE_PLUGIN_LINKTOP))
+#define MM_IS_PLUGIN_LINKTOP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  MM_TYPE_PLUGIN_LINKTOP))
+#define MM_PLUGIN_LINKTOP_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  MM_TYPE_PLUGIN_LINKTOP, MMPluginLinktopClass))
+
+typedef struct {
+    MMPlugin parent;
+} MMPluginLinktop;
+
+typedef struct {
+    MMPluginClass parent;
+} MMPluginLinktopClass;
+
+GType mm_plugin_linktop_get_type (void);
+
+G_MODULE_EXPORT MMPlugin *mm_plugin_create (void);
+
+#endif /* MM_PLUGIN_LINKTOP_H */
diff --git a/src/plugins/linktop/tests/test-modem-helpers-linktop.c b/src/plugins/linktop/tests/test-modem-helpers-linktop.c
new file mode 100644
index 00000000..07aa8378
--- /dev/null
+++ b/src/plugins/linktop/tests/test-modem-helpers-linktop.c
@@ -0,0 +1,71 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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:
+ *
+ * Copyright (C) 2016 Aleksander Morgado <aleksander@aleksander.es>
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <locale.h>
+
+#include <ModemManager.h>
+#define _LIBMM_INSIDE_MM
+#include <libmm-glib.h>
+
+#include "mm-log-test.h"
+#include "mm-modem-helpers.h"
+#include "mm-modem-helpers-linktop.h"
+
+/*****************************************************************************/
+
+typedef struct {
+    const gchar *str;
+    MMModemMode  allowed;
+} CfunQueryCurrentModeTest;
+
+static const CfunQueryCurrentModeTest cfun_query_current_mode_tests[] = {
+    { "+CFUN: 0",   MM_MODEM_MODE_NONE                  },
+    { "+CFUN: 1",   MM_MODEM_MODE_2G | MM_MODEM_MODE_3G },
+    { "+CFUN: 4",   MM_MODEM_MODE_NONE                  },
+    { "+CFUN: 5",   MM_MODEM_MODE_2G                    },
+    { "+CFUN: 6",   MM_MODEM_MODE_3G                    },
+};
+
+static void
+test_cfun_query_current_modes (void)
+{
+    guint i;
+
+    for (i = 0; i < G_N_ELEMENTS (cfun_query_current_mode_tests); i++) {
+        GError      *error = NULL;
+        gboolean     success;
+        MMModemMode  allowed = MM_MODEM_MODE_NONE;
+
+        success = mm_linktop_parse_cfun_query_current_modes (cfun_query_current_mode_tests[i].str, &allowed, &error);
+        g_assert_no_error (error);
+        g_assert (success);
+        g_assert_cmpuint (cfun_query_current_mode_tests[i].allowed, ==, allowed);
+    }
+}
+
+/*****************************************************************************/
+
+int main (int argc, char **argv)
+{
+    setlocale (LC_ALL, "");
+
+    g_test_init (&argc, &argv, NULL);
+
+    g_test_add_func ("/MM/linktop/cfun/query/current-modes", test_cfun_query_current_modes);
+
+    return g_test_run ();
+}