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

/* -*- 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>

#include <libmm-common.h>

#include "ModemManager.h"
#include "mm-serial-parsers.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-linktop.h"

#define LINKTOP_MODE_ANY  1
#define LINKTOP_MODE_2G   5
#define LINKTOP_MODE_3G   6

static void iface_modem_init (MMIfaceModem *iface);

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 initial allowed/preferred modes (Modem interface) */

static gboolean
load_allowed_modes_finish (MMIfaceModem *self,
                           GAsyncResult *res,
                           MMModemMode *allowed,
                           MMModemMode *preferred,
                           GError **error)
{
    const gchar *response;
    const gchar *str;
    guint aux;

    response = mm_base_modem_at_command_finish (MM_BASE_MODEM (self), res, error);
    if (!response)
        return FALSE;

    str = mm_strip_tag (response, "CFUN:");
    if (!mm_get_uint_from_str (str, &aux)) {
        g_set_error (error,
                     MM_CORE_ERROR,
                     MM_CORE_ERROR_FAILED,
                     "Couldn't parse CFUN? response: '%s'",
                     response);
        return FALSE;
    }

    switch (aux) {
    case LINKTOP_MODE_2G:
        *allowed = MM_MODEM_MODE_2G;
        *preferred = MM_MODEM_MODE_NONE;
        break;

    case LINKTOP_MODE_3G:
        *allowed = MM_MODEM_MODE_3G;
        *preferred = MM_MODEM_MODE_NONE;
        break;

    case LINKTOP_MODE_ANY:
        *allowed = (MM_MODEM_MODE_2G | MM_MODEM_MODE_3G);
        *preferred = MM_MODEM_MODE_NONE;
        break;

    default:
        *allowed = MM_MODEM_MODE_ANY;
        *preferred = MM_MODEM_MODE_NONE;
        break;
    }

    return TRUE;
}

static void
load_allowed_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_allowed_modes_finish (MMIfaceModem *self,
                          GAsyncResult *res,
                          GError **error)
{
    return !g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (res), error);
}

static void
allowed_mode_update_ready (MMBroadbandModemLinktop *self,
                           GAsyncResult *res,
                           GSimpleAsyncResult *operation_result)
{
    GError *error = NULL;

    mm_base_modem_at_command_finish (MM_BASE_MODEM (self), res, &error);
    if (error)
        /* Let the error be critical. */
        g_simple_async_result_take_error (operation_result, error);
    else
        g_simple_async_result_set_op_res_gboolean (operation_result, TRUE);
    g_simple_async_result_complete (operation_result);
    g_object_unref (operation_result);
}

static void
set_allowed_modes (MMIfaceModem *self,
                   MMModemMode allowed,
                   MMModemMode preferred,
                   GAsyncReadyCallback callback,
                   gpointer user_data)
{
    GSimpleAsyncResult *result;
    gchar *command;
    gint linktop_mode = -1;

    result = g_simple_async_result_new (G_OBJECT (self),
                                        callback,
                                        user_data,
                                        set_allowed_modes);

    /* There is no explicit config for CS connections, we just assume we may
     * have them as part of 2G when no GPRS is available */
    if (allowed & MM_MODEM_MODE_CS) {
        allowed |= MM_MODEM_MODE_2G;
        allowed &= ~MM_MODEM_MODE_CS;
    }

    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;
    }

    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_simple_async_result_set_error (result,
                                         MM_CORE_ERROR,
                                         MM_CORE_ERROR_FAILED,
                                         "Requested mode (allowed: '%s', preferred: '%s') not "
                                         "supported by the modem.",
                                         allowed_str,
                                         preferred_str);
        g_free (allowed_str);
        g_free (preferred_str);

        g_simple_async_result_complete_in_idle (result);
        g_object_unref (result);
        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,
        result);
    g_free (command);
}

/*****************************************************************************/

MMBroadbandModemLinktop *
mm_broadband_modem_linktop_new (const gchar *device,
                                const gchar *driver,
                                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_DRIVER, driver,
                         MM_BASE_MODEM_PLUGIN, plugin,
                         MM_BASE_MODEM_VENDOR_ID, vendor_id,
                         MM_BASE_MODEM_PRODUCT_ID, product_id,
                         NULL);
}

static void
mm_broadband_modem_linktop_init (MMBroadbandModemLinktop *self)
{
}

static void
iface_modem_init (MMIfaceModem *iface)
{
    iface->load_allowed_modes = load_allowed_modes;
    iface->load_allowed_modes_finish = load_allowed_modes_finish;
    iface->set_allowed_modes = set_allowed_modes;
    iface->set_allowed_modes_finish = set_allowed_modes_finish;
}

static void
mm_broadband_modem_linktop_class_init (MMBroadbandModemLinktopClass *klass)
{
}