plugins/sim7100.c - pub/scm/network/ofono/ofono.git - Git at Google

 /*
  * oFono - Open Source Telephony
  * Copyright (C) 2008-2011  Intel Corporation
  * Copyright (C) 2009  Collabora Ltd
  * Copyright 2018 Purism SPC
  *
  * SPDX-License-Identifier: GPL-2.0-only
  */

 /*
  * This file was originally copied from g1.c and
  * modified by Bob Ham <bob.ham@puri.sm>
  */

 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif

 #include <stdlib.h>
 #include <errno.h>

 #include <glib.h>
 #include <gatchat.h>
 #include <gattty.h>
 #include <ell/ell.h>

 #define OFONO_API_SUBJECT_TO_CHANGE
 #include <ofono/plugin.h>
 #include <ofono/log.h>
 #include <ofono/modem.h>
 #include <ofono/call-barring.h>
 #include <ofono/call-forwarding.h>
 #include <ofono/call-meter.h>
 #include <ofono/call-settings.h>
 #include <ofono/devinfo.h>
 #include <ofono/message-waiting.h>
 #include <ofono/netreg.h>
 #include <ofono/phonebook.h>
 #include <ofono/radio-settings.h>
 #include <ofono/sim.h>
 #include <ofono/sms.h>
 #include <ofono/ussd.h>
 #include <ofono/voicecall.h>
 #include <ofono/gprs.h>
 #include <ofono/gprs-context.h>

 #include <drivers/atmodem/vendor.h>
 #include <drivers/atmodem/atutil.h>

 static const char *cfun_prefix[] = { "+CFUN:", NULL };

 enum sim7x00_model {
 	SIMCOM_UNKNOWN = 0,
 	SIMCOM_A76XX,
 };

 struct sim7100_data {
 	GAtChat *at;
 	GAtChat *ppp;
 	enum sim7x00_model model;
 	struct l_timeout *init_timeout;
 	size_t init_count;
 	guint init_cmd;
 };

 static void sim7100_debug(const char *str, void *user_data)
 {
 	const char *prefix = user_data;

 	ofono_info("%s: %s", prefix, str);
 }

 /* Detect hardware, and initialize if found */
 static int sim7100_probe(struct ofono_modem *modem)
 {
 	struct sim7100_data *data;

 	DBG("");

 	data = g_try_new0(struct sim7100_data, 1);
 	if (data == NULL)
 		return -ENOMEM;

 	ofono_modem_set_data(modem, data);

 	return 0;
 }

 static void sim7100_remove(struct ofono_modem *modem)
 {
 	struct sim7100_data *data = ofono_modem_get_data(modem);

 	DBG("");

 	if (!data)
 		return;

 	if (data->at)
 		g_at_chat_unref(data->at);

 	if (data->ppp)
 		g_at_chat_unref(data->ppp);

 	ofono_modem_set_data(modem, NULL);
 	l_timeout_remove(data->init_timeout);
 	g_free(data);
 }

 static void ppptim_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
 	struct ofono_modem *modem = user_data;

 	DBG("");

 	ofono_modem_set_powered(modem, TRUE);
 }

 static void ppptim_support_cb(gboolean ok, GAtResult *result,
 			      gpointer user_data)
 {
 	struct ofono_modem *modem = user_data;
 	struct sim7100_data *data = ofono_modem_get_data(modem);

 	DBG("");

 	if (ok) {
 		/* enable reset of PPP state upon AT+CFUN=0 for A76XX modems */
 		g_at_chat_send(data->at, "AT+PPPTIM=1", NULL, ppptim_cb,
 			       modem, NULL);
 	} else {
 		ofono_warn("modem doesn't support ppp reset on disable; is the "
 			   "firmware up to date?");
 		ofono_modem_set_powered(modem, TRUE);
 	}
 }

 static void cfun_set_on_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
 	struct ofono_modem *modem = user_data;
 	struct sim7100_data *data = ofono_modem_get_data(modem);

 	DBG("");

 	if (!ok)
 		return;

 	if (data->model == SIMCOM_A76XX)
 		/* does the modem support reset of PPP state upon AT+CFUN=0? */
 		g_at_chat_send(data->at, "AT+PPPTIM?", NULL, ppptim_support_cb,
 			       modem, NULL);
 	else
 		ofono_modem_set_powered(modem, TRUE);
 }

 static void cgmm_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
 	struct ofono_modem *modem = user_data;
 	struct sim7100_data *data = ofono_modem_get_data(modem);
 	GAtResultIter iter;
 	const char *model;

 	if (!ok) {
 		ofono_error("%s: failed to query model",
 						ofono_modem_get_path(modem));
 		ofono_modem_set_powered(modem, FALSE);
 		return;
 	}

 	g_at_result_iter_init(&iter, result);

 	while (g_at_result_iter_next(&iter, NULL)) {
 		if (!g_at_result_iter_next_unquoted_string(&iter, &model))
 			continue;

 		DBG("modem model: %s", model);

 		if (g_str_has_prefix(model, "A76"))
 			data->model = SIMCOM_A76XX;

 		break;
 	}

 	switch (data->model) {
 	case SIMCOM_A76XX:
 		/* ignore NO CARRIER on the AT channel when disconnecting PPP */
 		g_at_chat_blacklist_terminator(data->at,
 					G_AT_CHAT_TERMINATOR_NO_CARRIER);
 		break;
 	default:
 		break;
 	}

 	/* power up modem */
 	g_at_chat_send(data->at, "AT+CFUN=4", NULL, cfun_set_on_cb, modem,
 									NULL);
 }

 static void init_cmd_cb(gboolean ok, GAtResult *result, void *user_data)
 {
 	struct ofono_modem *modem = user_data;
 	struct sim7100_data *data = ofono_modem_get_data(modem);

 	DBG("%p", modem);

 	/* ensure modem is in a known state; verbose on, echo/quiet off */
 	g_at_chat_send(data->at, "ATE0Q0V1", NULL, NULL, NULL, NULL);

 	/* query modem model string */
 	g_at_chat_send(data->at, "AT+CGMM", NULL, cgmm_cb, modem,
 			NULL);

 	l_timeout_remove(data->init_timeout);
 	data->init_timeout = NULL;
 }

 static void close_serial(struct ofono_modem *modem)
 {
 	struct sim7100_data *data = ofono_modem_get_data(modem);

 	g_at_chat_unref(data->ppp);
 	g_at_chat_unref(data->at);
 	data->at = data->ppp = NULL;
 }

 static void init_timeout_cb(struct l_timeout *timeout, void *user_data)
 {
 	struct ofono_modem *modem = user_data;
 	struct sim7100_data *data = ofono_modem_get_data(modem);

 	DBG("%p", modem);

 	if (data->init_count++ >= 30) {
 		ofono_error("failed to init modem after 30 attempts");

 		l_timeout_remove(data->init_timeout);
 		data->init_timeout = NULL;
 		close_serial(modem);

 		ofono_modem_set_powered(modem, FALSE);
 		return;
 	}

 	g_at_chat_retry(data->at, data->init_cmd);
 	l_timeout_modify_ms(timeout, 500);
 }

 static int open_device(struct ofono_modem *modem, char *devkey, GAtChat **chat)
 {
 	DBG("devkey=%s", devkey);

 	*chat = at_util_open_device(modem, devkey, sim7100_debug, devkey, NULL);
 	if (*chat == NULL)
 		return -EIO;

 	return 0;
 }

 static int sim7100_enable(struct ofono_modem *modem)
 {
 	struct sim7100_data *data = ofono_modem_get_data(modem);
 	int err;

 	DBG("");

 	err = open_device(modem, "AT", &data->at);
 	if (err < 0)
 		return err;

 	err = open_device(modem, "PPP", &data->ppp);
 	if (err < 0)
 		return err;

 	data->init_count = 0;
 	data->init_cmd = g_at_chat_send(data->at, "AT", NULL,
 			init_cmd_cb, modem, NULL);
 	data->init_timeout = l_timeout_create_ms(500, init_timeout_cb, modem,
 			NULL);

 	return -EINPROGRESS;
 }

 static void cfun_set_off_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
 	struct ofono_modem *modem = user_data;

 	DBG("");

 	close_serial(modem);

 	if (ok)
 		ofono_modem_set_powered(modem, FALSE);
 }

 static int sim7100_disable(struct ofono_modem *modem)
 {
 	struct sim7100_data *data = ofono_modem_get_data(modem);

 	DBG("");

 	/* power down modem */
 	g_at_chat_cancel_all(data->ppp);
 	g_at_chat_cancel_all(data->at);
 	g_at_chat_unregister_all(data->ppp);
 	g_at_chat_unregister_all(data->at);
 	g_at_chat_send(data->at, "AT+CFUN=0", NULL, cfun_set_off_cb,
 								modem, NULL);

 	return -EINPROGRESS;
 }

 static void sim7100_pre_sim(struct ofono_modem *modem)
 {
 	struct sim7100_data *data = ofono_modem_get_data(modem);
 	struct ofono_sim *sim;

 	DBG("");

 	ofono_devinfo_create(modem, 0, "atmodem", data->at);

 	switch (data->model) {
 	case SIMCOM_A76XX:
 		sim = ofono_sim_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
 							"atmodem", data->at);
 		ofono_voicecall_create(modem, 0, "atmodem", data->at);
 		break;
 	default:
 		sim = ofono_sim_create(modem, 0, "atmodem", data->at);
 		ofono_voicecall_create(modem, OFONO_VENDOR_SIMCOM,
 							"atmodem", data->at);
 		break;
 	}

 	if (sim)
 		ofono_sim_inserted_notify(sim, TRUE);
 }

 static void sim7100_post_sim(struct ofono_modem *modem)
 {
 	struct sim7100_data *data = ofono_modem_get_data(modem);
 	struct ofono_message_waiting *mw;
 	struct ofono_gprs *gprs = NULL;
 	struct ofono_gprs_context *gc = NULL;

 	DBG("");

 	ofono_ussd_create(modem, 0, "atmodem", data->at);
 	ofono_call_forwarding_create(modem, 0, "atmodem", data->at);
 	ofono_call_settings_create(modem, 0, "atmodem", data->at);
 	ofono_call_meter_create(modem, 0, "atmodem", data->at);
 	ofono_call_barring_create(modem, 0, "atmodem", data->at);
 	ofono_phonebook_create(modem, 0, "atmodem", data->at);

 	switch (data->model) {
 	case SIMCOM_A76XX:
 		ofono_netreg_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
 							"atmodem", data->at);
 		ofono_sms_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
 							"atmodem", data->at);
 		ofono_radio_settings_create(modem, 0, "simcommodem", data->at);
 		gprs = ofono_gprs_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
 							"atmodem", data->at);
 		break;
 	default:
 		ofono_netreg_create(modem, 0, "atmodem", data->at);
 		ofono_sms_create(modem, OFONO_VENDOR_SIMCOM, "atmodem",
 								data->at);
 		gprs = ofono_gprs_create(modem, 0, "atmodem", data->at);
 		break;
 	}

 	gc = ofono_gprs_context_create(modem, 0, "atmodem", data->ppp);

 	if (gprs && gc)
 		ofono_gprs_add_context(gprs, gc);

 	mw = ofono_message_waiting_create(modem);
 	if (mw)
 		ofono_message_waiting_register(mw);
 }

 static void set_online_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
 	struct cb_data *cbd = user_data;
 	ofono_modem_online_cb_t cb = cbd->cb;
 	struct ofono_error error;

 	DBG("ok: %i", ok);

 	decode_at_error(&error, g_at_result_final_response(result));
 	cb(&error, cbd->data);
 }

 static void sim7100_set_online(struct ofono_modem *modem, ofono_bool_t online,
 				ofono_modem_online_cb_t cb, void *user_data)
 {
 	struct sim7100_data *data = ofono_modem_get_data(modem);
 	struct cb_data *cbd = cb_data_new(cb, user_data);
 	char const *command = online ? "AT+CFUN=1" : "AT+CFUN=4";

 	DBG("%s", online ? "online" : "offline");

 	if (g_at_chat_send(data->at, command, cfun_prefix, set_online_cb, cbd,
 				g_free) > 0)
 		return;

 	CALLBACK_WITH_FAILURE(cb, cbd->data);

 	g_free(cbd);
 }

 static struct ofono_modem_driver sim7100_driver = {
 	.probe		= sim7100_probe,
 	.remove		= sim7100_remove,
 	.enable		= sim7100_enable,
 	.disable	= sim7100_disable,
 	.set_online	= sim7100_set_online,
 	.pre_sim	= sim7100_pre_sim,
 	.post_sim	= sim7100_post_sim,
 };

 OFONO_MODEM_DRIVER_BUILTIN(sim7100, &sim7100_driver)
	/*
	* oFono - Open Source Telephony
	* Copyright (C) 2008-2011 Intel Corporation
	* Copyright (C) 2009 Collabora Ltd
	* Copyright 2018 Purism SPC
	*
	* SPDX-License-Identifier: GPL-2.0-only
	*/

	/*
	* This file was originally copied from g1.c and
	* modified by Bob Ham <bob.ham@puri.sm>
	*/

	#ifdef HAVE_CONFIG_H
	#include <config.h>
	#endif

	#include <stdlib.h>
	#include <errno.h>

	#include <glib.h>
	#include <gatchat.h>
	#include <gattty.h>
	#include <ell/ell.h>

	#define OFONO_API_SUBJECT_TO_CHANGE
	#include <ofono/plugin.h>
	#include <ofono/log.h>
	#include <ofono/modem.h>
	#include <ofono/call-barring.h>
	#include <ofono/call-forwarding.h>
	#include <ofono/call-meter.h>
	#include <ofono/call-settings.h>
	#include <ofono/devinfo.h>
	#include <ofono/message-waiting.h>
	#include <ofono/netreg.h>
	#include <ofono/phonebook.h>
	#include <ofono/radio-settings.h>
	#include <ofono/sim.h>
	#include <ofono/sms.h>
	#include <ofono/ussd.h>
	#include <ofono/voicecall.h>
	#include <ofono/gprs.h>
	#include <ofono/gprs-context.h>

	#include <drivers/atmodem/vendor.h>
	#include <drivers/atmodem/atutil.h>

	static const char *cfun_prefix[] = { "+CFUN:", NULL };

	enum sim7x00_model {
	SIMCOM_UNKNOWN = 0,
	SIMCOM_A76XX,
	};

	struct sim7100_data {
	GAtChat *at;
	GAtChat *ppp;
	enum sim7x00_model model;
	struct l_timeout *init_timeout;
	size_t init_count;
	guint init_cmd;
	};

	static void sim7100_debug(const char str, void user_data)
	{
	const char *prefix = user_data;

	ofono_info("%s: %s", prefix, str);
	}

	/* Detect hardware, and initialize if found */
	static int sim7100_probe(struct ofono_modem *modem)
	{
	struct sim7100_data *data;

	DBG("");

	data = g_try_new0(struct sim7100_data, 1);
	if (data == NULL)
	return -ENOMEM;

	ofono_modem_set_data(modem, data);

	return 0;
	}

	static void sim7100_remove(struct ofono_modem *modem)
	{
	struct sim7100_data *data = ofono_modem_get_data(modem);

	DBG("");

	if (!data)
	return;

	if (data->at)
	g_at_chat_unref(data->at);

	if (data->ppp)
	g_at_chat_unref(data->ppp);

	ofono_modem_set_data(modem, NULL);
	l_timeout_remove(data->init_timeout);
	g_free(data);
	}

	static void ppptim_cb(gboolean ok, GAtResult *result, gpointer user_data)
	{
	struct ofono_modem *modem = user_data;

	DBG("");

	ofono_modem_set_powered(modem, TRUE);
	}

	static void ppptim_support_cb(gboolean ok, GAtResult *result,
	gpointer user_data)
	{
	struct ofono_modem *modem = user_data;
	struct sim7100_data *data = ofono_modem_get_data(modem);

	DBG("");

	if (ok) {
	/* enable reset of PPP state upon AT+CFUN=0 for A76XX modems */
	g_at_chat_send(data->at, "AT+PPPTIM=1", NULL, ppptim_cb,
	modem, NULL);
	} else {
	ofono_warn("modem doesn't support ppp reset on disable; is the "
	"firmware up to date?");
	ofono_modem_set_powered(modem, TRUE);
	}
	}

	static void cfun_set_on_cb(gboolean ok, GAtResult *result, gpointer user_data)
	{
	struct ofono_modem *modem = user_data;
	struct sim7100_data *data = ofono_modem_get_data(modem);

	DBG("");

	if (!ok)
	return;

	if (data->model == SIMCOM_A76XX)
	/* does the modem support reset of PPP state upon AT+CFUN=0? */
	g_at_chat_send(data->at, "AT+PPPTIM?", NULL, ppptim_support_cb,
	modem, NULL);
	else
	ofono_modem_set_powered(modem, TRUE);
	}

	static void cgmm_cb(gboolean ok, GAtResult *result, gpointer user_data)
	{
	struct ofono_modem *modem = user_data;
	struct sim7100_data *data = ofono_modem_get_data(modem);
	GAtResultIter iter;
	const char *model;

	if (!ok) {
	ofono_error("%s: failed to query model",
	ofono_modem_get_path(modem));
	ofono_modem_set_powered(modem, FALSE);
	return;
	}

	g_at_result_iter_init(&iter, result);

	while (g_at_result_iter_next(&iter, NULL)) {
	if (!g_at_result_iter_next_unquoted_string(&iter, &model))
	continue;

	DBG("modem model: %s", model);

	if (g_str_has_prefix(model, "A76"))
	data->model = SIMCOM_A76XX;

	break;
	}

	switch (data->model) {
	case SIMCOM_A76XX:
	/* ignore NO CARRIER on the AT channel when disconnecting PPP */
	g_at_chat_blacklist_terminator(data->at,
	G_AT_CHAT_TERMINATOR_NO_CARRIER);
	break;
	default:
	break;
	}

	/* power up modem */
	g_at_chat_send(data->at, "AT+CFUN=4", NULL, cfun_set_on_cb, modem,
	NULL);
	}

	static void init_cmd_cb(gboolean ok, GAtResult result, void user_data)
	{
	struct ofono_modem *modem = user_data;
	struct sim7100_data *data = ofono_modem_get_data(modem);

	DBG("%p", modem);

	/* ensure modem is in a known state; verbose on, echo/quiet off */
	g_at_chat_send(data->at, "ATE0Q0V1", NULL, NULL, NULL, NULL);

	/* query modem model string */
	g_at_chat_send(data->at, "AT+CGMM", NULL, cgmm_cb, modem,
	NULL);

	l_timeout_remove(data->init_timeout);
	data->init_timeout = NULL;
	}

	static void close_serial(struct ofono_modem *modem)
	{
	struct sim7100_data *data = ofono_modem_get_data(modem);

	g_at_chat_unref(data->ppp);
	g_at_chat_unref(data->at);
	data->at = data->ppp = NULL;
	}

	static void init_timeout_cb(struct l_timeout timeout, void user_data)
	{
	struct ofono_modem *modem = user_data;
	struct sim7100_data *data = ofono_modem_get_data(modem);

	DBG("%p", modem);

	if (data->init_count++ >= 30) {
	ofono_error("failed to init modem after 30 attempts");

	l_timeout_remove(data->init_timeout);
	data->init_timeout = NULL;
	close_serial(modem);

	ofono_modem_set_powered(modem, FALSE);
	return;
	}

	g_at_chat_retry(data->at, data->init_cmd);
	l_timeout_modify_ms(timeout, 500);
	}

	static int open_device(struct ofono_modem modem, char devkey, GAtChat **chat)
	{
	DBG("devkey=%s", devkey);

	*chat = at_util_open_device(modem, devkey, sim7100_debug, devkey, NULL);
	if (*chat == NULL)
	return -EIO;

	return 0;
	}

	static int sim7100_enable(struct ofono_modem *modem)
	{
	struct sim7100_data *data = ofono_modem_get_data(modem);
	int err;

	DBG("");

	err = open_device(modem, "AT", &data->at);
	if (err < 0)
	return err;

	err = open_device(modem, "PPP", &data->ppp);
	if (err < 0)
	return err;

	data->init_count = 0;
	data->init_cmd = g_at_chat_send(data->at, "AT", NULL,
	init_cmd_cb, modem, NULL);
	data->init_timeout = l_timeout_create_ms(500, init_timeout_cb, modem,
	NULL);

	return -EINPROGRESS;
	}

	static void cfun_set_off_cb(gboolean ok, GAtResult *result, gpointer user_data)
	{
	struct ofono_modem *modem = user_data;

	DBG("");

	close_serial(modem);

	if (ok)
	ofono_modem_set_powered(modem, FALSE);
	}

	static int sim7100_disable(struct ofono_modem *modem)
	{
	struct sim7100_data *data = ofono_modem_get_data(modem);

	DBG("");

	/* power down modem */
	g_at_chat_cancel_all(data->ppp);
	g_at_chat_cancel_all(data->at);
	g_at_chat_unregister_all(data->ppp);
	g_at_chat_unregister_all(data->at);
	g_at_chat_send(data->at, "AT+CFUN=0", NULL, cfun_set_off_cb,
	modem, NULL);

	return -EINPROGRESS;
	}

	static void sim7100_pre_sim(struct ofono_modem *modem)
	{
	struct sim7100_data *data = ofono_modem_get_data(modem);
	struct ofono_sim *sim;

	DBG("");

	ofono_devinfo_create(modem, 0, "atmodem", data->at);

	switch (data->model) {
	case SIMCOM_A76XX:
	sim = ofono_sim_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
	"atmodem", data->at);
	ofono_voicecall_create(modem, 0, "atmodem", data->at);
	break;
	default:
	sim = ofono_sim_create(modem, 0, "atmodem", data->at);
	ofono_voicecall_create(modem, OFONO_VENDOR_SIMCOM,
	"atmodem", data->at);
	break;
	}

	if (sim)
	ofono_sim_inserted_notify(sim, TRUE);
	}

	static void sim7100_post_sim(struct ofono_modem *modem)
	{
	struct sim7100_data *data = ofono_modem_get_data(modem);
	struct ofono_message_waiting *mw;
	struct ofono_gprs *gprs = NULL;
	struct ofono_gprs_context *gc = NULL;

	DBG("");

	ofono_ussd_create(modem, 0, "atmodem", data->at);
	ofono_call_forwarding_create(modem, 0, "atmodem", data->at);
	ofono_call_settings_create(modem, 0, "atmodem", data->at);
	ofono_call_meter_create(modem, 0, "atmodem", data->at);
	ofono_call_barring_create(modem, 0, "atmodem", data->at);
	ofono_phonebook_create(modem, 0, "atmodem", data->at);

	switch (data->model) {
	case SIMCOM_A76XX:
	ofono_netreg_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
	"atmodem", data->at);
	ofono_sms_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
	"atmodem", data->at);
	ofono_radio_settings_create(modem, 0, "simcommodem", data->at);
	gprs = ofono_gprs_create(modem, OFONO_VENDOR_SIMCOM_A76XX,
	"atmodem", data->at);
	break;
	default:
	ofono_netreg_create(modem, 0, "atmodem", data->at);
	ofono_sms_create(modem, OFONO_VENDOR_SIMCOM, "atmodem",
	data->at);
	gprs = ofono_gprs_create(modem, 0, "atmodem", data->at);
	break;
	}

	gc = ofono_gprs_context_create(modem, 0, "atmodem", data->ppp);

	if (gprs && gc)
	ofono_gprs_add_context(gprs, gc);

	mw = ofono_message_waiting_create(modem);
	if (mw)
	ofono_message_waiting_register(mw);
	}

	static void set_online_cb(gboolean ok, GAtResult *result, gpointer user_data)
	{
	struct cb_data *cbd = user_data;
	ofono_modem_online_cb_t cb = cbd->cb;
	struct ofono_error error;

	DBG("ok: %i", ok);

	decode_at_error(&error, g_at_result_final_response(result));
	cb(&error, cbd->data);
	}

	static void sim7100_set_online(struct ofono_modem *modem, ofono_bool_t online,
	ofono_modem_online_cb_t cb, void *user_data)
	{
	struct sim7100_data *data = ofono_modem_get_data(modem);
	struct cb_data *cbd = cb_data_new(cb, user_data);
	char const *command = online ? "AT+CFUN=1" : "AT+CFUN=4";

	DBG("%s", online ? "online" : "offline");

	if (g_at_chat_send(data->at, command, cfun_prefix, set_online_cb, cbd,
	g_free) > 0)
	return;

	CALLBACK_WITH_FAILURE(cb, cbd->data);

	g_free(cbd);
	}

	static struct ofono_modem_driver sim7100_driver = {
	.probe = sim7100_probe,
	.remove = sim7100_remove,
	.enable = sim7100_enable,
	.disable = sim7100_disable,
	.set_online = sim7100_set_online,
	.pre_sim = sim7100_pre_sim,
	.post_sim = sim7100_post_sim,
	};

	OFONO_MODEM_DRIVER_BUILTIN(sim7100, &sim7100_driver)