plugins: new driver for u-blox SARA-U270 modems

This driver may also work (perhaps with more or less trivial changes)
with other u-blox modems (SARA, LISA, LEON) but this hasn't been tested.

1 files changed, 293 insertions, 0 deletions

diff --git a/plugins/ublox.c b/plugins/ublox.c
new file mode 100644
index 00000000..8aa797e6
--- /dev/null
+++ b/plugins/ublox.c
@@ -0,0 +1,293 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2014  Philip Paeps. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include <glib.h>
+#include <gatchat.h>
+#include <gattty.h>
+
+#define OFONO_API_SUBJECT_TO_CHANGE
+#include <ofono/plugin.h>
+#include <ofono/modem.h>
+#include <ofono/devinfo.h>
+#include <ofono/netreg.h>
+#include <ofono/sim.h>
+#include <ofono/gprs.h>
+#include <ofono/gprs-context.h>
+
+#include <drivers/atmodem/atutil.h>
+#include <drivers/atmodem/vendor.h>
+
+static const char *none_prefix[] = { NULL };
+
+struct ublox_data {
+	GAtChat *modem;
+	GAtChat *aux;
+};
+
+static void ublox_debug(const char *str, void *user_data)
+{
+	const char *prefix = user_data;
+
+	ofono_info("%s%s", prefix, str);
+}
+
+static int ublox_probe(struct ofono_modem *modem)
+{
+	struct ublox_data *data;
+
+	DBG("%p", modem);
+
+	data = g_try_new0(struct ublox_data, 1);
+	if (data == NULL)
+		return -ENOMEM;
+
+	ofono_modem_set_data(modem, data);
+
+	return 0;
+}
+
+static void ublox_remove(struct ofono_modem *modem)
+{
+	struct ublox_data *data = ofono_modem_get_data(modem);
+
+	DBG("%p", modem);
+
+	ofono_modem_set_data(modem, NULL);
+	g_at_chat_unref(data->aux);
+	g_at_chat_unref(data->modem);
+	g_free(data);
+}
+
+static GAtChat *open_device(struct ofono_modem *modem,
+				const char *key, char *debug)
+{
+	const char *device;
+	GAtSyntax *syntax;
+	GIOChannel *channel;
+	GAtChat *chat;
+
+	device = ofono_modem_get_string(modem, key);
+	if (device == NULL)
+		return NULL;
+
+	DBG("%s %s", key, device);
+
+	channel = g_at_tty_open(device, NULL);
+	if (channel == NULL)
+		return NULL;
+
+	syntax = g_at_syntax_new_gsm_permissive();
+	chat = g_at_chat_new(channel, syntax);
+	g_at_syntax_unref(syntax);
+
+	g_io_channel_unref(channel);
+
+	if (chat == NULL)
+		return NULL;
+
+	if (getenv("OFONO_AT_DEBUG"))
+		g_at_chat_set_debug(chat, ublox_debug, debug);
+
+	return chat;
+}
+
+static void cfun_enable(gboolean ok, GAtResult *result, gpointer user_data)
+{
+	struct ofono_modem *modem = user_data;
+	struct ublox_data * data = ofono_modem_get_data(modem);
+
+	DBG("ok %d", ok);
+
+	if (!ok) {
+		g_at_chat_unref(data->aux);
+		data->aux = NULL;
+		g_at_chat_unref(data->modem);
+		data->modem = NULL;
+		ofono_modem_set_powered(modem, FALSE);
+		return;
+	}
+
+	ofono_modem_set_powered(modem, TRUE);
+}
+
+static int ublox_enable(struct ofono_modem *modem)
+{
+	struct ublox_data *data = ofono_modem_get_data(modem);
+
+	DBG("%p", modem);
+
+	data->modem = open_device(modem, "Modem", "Modem: ");
+	if (data->modem == NULL)
+		return -EINVAL;
+
+	data->aux = open_device(modem, "Aux", "Aux: ");
+	if (data->aux == NULL) {
+		g_at_chat_unref(data->modem);
+		data->modem = NULL;
+		return -EIO;
+	}
+	g_at_chat_set_slave(data->modem, data->aux);
+
+	g_at_chat_send(data->modem, "ATE0 +CMEE=1", none_prefix,
+					NULL, NULL, NULL);
+	g_at_chat_send(data->aux, "ATE0 +CMEE=1", none_prefix,
+					NULL, NULL, NULL);
+
+	g_at_chat_send(data->aux, "AT+CFUN=4", none_prefix,
+					cfun_enable, modem, NULL);
+
+	return -EINPROGRESS;
+}
+
+static void cfun_disable(gboolean ok, GAtResult *result, gpointer user_data)
+{
+	struct ofono_modem *modem = user_data;
+	struct ublox_data *data = ofono_modem_get_data(modem);
+
+	DBG("");
+
+	g_at_chat_unref(data->aux);
+	data->aux = NULL;
+
+	if (ok)
+		ofono_modem_set_powered(modem, FALSE);
+}
+
+static int ublox_disable(struct ofono_modem *modem)
+{
+	struct ublox_data *data = ofono_modem_get_data(modem);
+
+	DBG("%p", modem);
+
+	g_at_chat_cancel_all(data->modem);
+	g_at_chat_unregister_all(data->modem);
+	g_at_chat_unref(data->modem);
+	data->modem = NULL;
+
+	g_at_chat_cancel_all(data->aux);
+	g_at_chat_unregister_all(data->aux);
+
+	g_at_chat_send(data->aux, "AT+CFUN=0", none_prefix,
+					cfun_disable, modem, NULL);
+
+	return -EINPROGRESS;
+}
+
+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;
+
+	decode_at_error(&error, g_at_result_final_response(result));
+	cb(&error, cbd->data);
+}
+
+static void ublox_set_online(struct ofono_modem *modem, ofono_bool_t online,
+				ofono_modem_online_cb_t cb, void *user_data)
+{
+	struct ublox_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("modem %p %s", modem, online ? "online" : "offline");
+
+	if (g_at_chat_send(data->aux, command, none_prefix, set_online_cb,
+					cbd, g_free) > 0)
+		return;
+
+	CALLBACK_WITH_FAILURE(cb, cbd->data);
+
+	g_free(cbd);
+}
+
+static void ublox_pre_sim(struct ofono_modem *modem)
+{
+	struct ublox_data *data = ofono_modem_get_data(modem);
+	struct ofono_sim *sim;
+
+	DBG("%p", modem);
+
+	ofono_devinfo_create(modem, OFONO_VENDOR_UBLOX, "atmodem",
+					data->aux);
+	sim = ofono_sim_create(modem, OFONO_VENDOR_UBLOX, "atmodem",
+					data->aux);
+
+	if (sim)
+		ofono_sim_inserted_notify(sim, TRUE);
+}
+
+static void ublox_post_sim(struct ofono_modem *modem)
+{
+	struct ublox_data *data = ofono_modem_get_data(modem);
+	struct ofono_gprs *gprs;
+	struct ofono_gprs_context *gc;
+
+	DBG("%p", modem);
+
+	gprs = ofono_gprs_create(modem, OFONO_VENDOR_UBLOX, "atmodem",
+					data->aux);
+	gc = ofono_gprs_context_create(modem, OFONO_VENDOR_UBLOX, "atmodem",
+					data->modem);
+
+	if (gprs && gc)
+		ofono_gprs_add_context(gprs, gc);
+}
+
+static void ublox_post_online(struct ofono_modem *modem)
+{
+	struct ublox_data *data = ofono_modem_get_data(modem);
+
+	ofono_netreg_create(modem, OFONO_VENDOR_UBLOX, "atmodem",
+					data->aux);
+}
+
+static struct ofono_modem_driver ublox_driver = {
+	.name		= "ublox",
+	.probe		= ublox_probe,
+	.remove		= ublox_remove,
+	.enable		= ublox_enable,
+	.disable	= ublox_disable,
+	.set_online	= ublox_set_online,
+	.pre_sim	= ublox_pre_sim,
+	.post_sim	= ublox_post_sim,
+	.post_online	= ublox_post_online,
+};
+
+static int ublox_init(void)
+{
+	return ofono_modem_driver_register(&ublox_driver);
+}
+
+static void ublox_exit(void)
+{
+	ofono_modem_driver_unregister(&ublox_driver);
+}
+
+OFONO_PLUGIN_DEFINE(ublox, "u-blox modem driver", VERSION,
+		OFONO_PLUGIN_PRIORITY_DEFAULT, ublox_init, ublox_exit)