drivers: Add gemaltomodem driver to handle GNSS

Add a new location-reporting driver for Gemalto Cinterion modems based
on telit implementation + use it in gemalto plugin. It supports
activation of GNSS engine (Request) with command AT^SGPSC. This driver
is tested on PHS8. NMEA frames are accessible on /dev/ttyUSB1.

3 files changed, 311 insertions, 0 deletions

diff --git a/drivers/gemaltomodem/gemaltomodem.c b/drivers/gemaltomodem/gemaltomodem.c
new file mode 100644
index 00000000..91cf238a
--- /dev/null
+++ b/drivers/gemaltomodem/gemaltomodem.c
@@ -0,0 +1,49 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2017 Vincent Cesson. 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 <glib.h>
+#include <gatchat.h>
+
+#define OFONO_API_SUBJECT_TO_CHANGE
+#include <ofono/plugin.h>
+#include <ofono/types.h>
+
+#include "gemaltomodem.h"
+
+static int gemaltomodem_init(void)
+{
+	gemalto_location_reporting_init();
+
+	return 0;
+}
+
+static void gemaltomodem_exit(void)
+{
+	gemalto_location_reporting_exit();
+}
+
+OFONO_PLUGIN_DEFINE(gemaltomodem, "Gemalto modem driver", VERSION,
+			OFONO_PLUGIN_PRIORITY_DEFAULT,
+			gemaltomodem_init, gemaltomodem_exit)
diff --git a/drivers/gemaltomodem/gemaltomodem.h b/drivers/gemaltomodem/gemaltomodem.h
new file mode 100644
index 00000000..7ea1e8fb
--- /dev/null
+++ b/drivers/gemaltomodem/gemaltomodem.h
@@ -0,0 +1,25 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2017 Vincent Cesson. 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
+ *
+ */
+
+#include <drivers/atmodem/atutil.h>
+
+extern void gemalto_location_reporting_init();
+extern void gemalto_location_reporting_exit();
diff --git a/drivers/gemaltomodem/location-reporting.c b/drivers/gemaltomodem/location-reporting.c
new file mode 100644
index 00000000..bcfe00e5
--- /dev/null
+++ b/drivers/gemaltomodem/location-reporting.c
@@ -0,0 +1,237 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2017 Vincent Cesson. 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
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <glib.h>
+
+#include <ofono/log.h>
+#include <ofono/modem.h>
+#include <ofono/location-reporting.h>
+
+#include "gatchat.h"
+#include "gatresult.h"
+#include "gattty.h"
+
+#include "gemaltomodem.h"
+
+static const char *sgpsc_prefix[] = { "^SGPSC:", NULL };
+
+struct gps_data {
+	GAtChat *chat;
+};
+
+static void gemalto_gps_disable_cb(gboolean ok, GAtResult *result,
+							gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	struct ofono_location_reporting *lr = cbd->user;
+	ofono_location_reporting_disable_cb_t cb = cbd->cb;
+
+	DBG("lr=%p, ok=%d", lr, ok);
+
+	if (!ok) {
+		struct ofono_error error;
+
+		decode_at_error(&error, g_at_result_final_response(result));
+		cb(&error, cbd->data);
+
+		return;
+	}
+
+	CALLBACK_WITH_SUCCESS(cb, cbd->data);
+}
+
+static void gemalto_location_reporting_disable(
+				struct ofono_location_reporting *lr,
+				ofono_location_reporting_disable_cb_t cb,
+				void *data)
+{
+	struct gps_data *gd = ofono_location_reporting_get_data(lr);
+	struct cb_data *cbd = cb_data_new(cb, data);
+
+	DBG("lr=%p", lr);
+
+	cbd->user = lr;
+
+	if (g_at_chat_send(gd->chat, "AT^SGPSC=\"Engine\",0", sgpsc_prefix,
+				gemalto_gps_disable_cb, cbd, g_free) > 0)
+		return;
+
+	CALLBACK_WITH_FAILURE(cb, data);
+
+	g_free(cbd);
+}
+
+static int enable_data_stream(struct ofono_location_reporting *lr)
+{
+	struct ofono_modem *modem;
+	const char *gps_dev;
+	GHashTable *options;
+	GIOChannel *channel;
+	int fd;
+
+	modem = ofono_location_reporting_get_modem(lr);
+	gps_dev = ofono_modem_get_string(modem, "GPS");
+
+	options = g_hash_table_new(g_str_hash, g_str_equal);
+	if (options == NULL)
+		return -1;
+
+	g_hash_table_insert(options, "Baud", "115200");
+
+	channel = g_at_tty_open(gps_dev, options);
+
+	g_hash_table_destroy(options);
+
+	if (channel == NULL)
+		return -1;
+
+	fd = g_io_channel_unix_get_fd(channel);
+
+	g_io_channel_set_close_on_unref(channel, FALSE);
+	g_io_channel_unref(channel);
+
+	return fd;
+}
+
+static void gemalto_sgpsc_cb(gboolean ok, GAtResult *result,
+					gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	ofono_location_reporting_enable_cb_t cb = cbd->cb;
+	struct ofono_location_reporting *lr = cbd->user;
+	struct ofono_error error;
+	int fd;
+
+	DBG("lr=%p ok=%d", lr, ok);
+
+	decode_at_error(&error, g_at_result_final_response(result));
+
+	if (!ok) {
+		cb(&error, -1, cbd->data);
+
+		return;
+	}
+
+	fd = enable_data_stream(lr);
+
+	if (fd < 0) {
+		CALLBACK_WITH_FAILURE(cb, -1, cbd->data);
+
+		return;
+	}
+
+	cb(&error, fd, cbd->data);
+	close(fd);
+}
+
+static void gemalto_location_reporting_enable(struct ofono_location_reporting *lr,
+					ofono_location_reporting_enable_cb_t cb,
+					void *data)
+{
+	struct gps_data *gd = ofono_location_reporting_get_data(lr);
+	struct cb_data *cbd = cb_data_new(cb, data);
+
+	DBG("lr=%p", lr);
+
+	cbd->user = lr;
+
+	if (g_at_chat_send(gd->chat, "AT^SGPSC=\"Engine\",2", sgpsc_prefix,
+				gemalto_sgpsc_cb, cbd, NULL) > 0)
+		return;
+
+	CALLBACK_WITH_FAILURE(cb, -1, cbd->data);
+	g_free(cbd);
+}
+
+static void gemalto_location_reporting_support_cb(gboolean ok, GAtResult *result,
+							gpointer user_data)
+{
+	struct ofono_location_reporting *lr = user_data;
+
+	if (!ok) {
+		ofono_location_reporting_remove(lr);
+
+		return;
+	}
+
+	ofono_location_reporting_register(lr);
+}
+
+static int gemalto_location_reporting_probe(struct ofono_location_reporting *lr,
+						unsigned int vendor, void *data)
+{
+	GAtChat *chat = data;
+	struct gps_data *gd;
+
+	gd = g_try_new0(struct gps_data, 1);
+	if (gd == NULL)
+		return -ENOMEM;
+
+	gd->chat = g_at_chat_clone(chat);
+
+	ofono_location_reporting_set_data(lr, gd);
+
+	g_at_chat_send(gd->chat, "AT^SGPSC=?", sgpsc_prefix,
+					gemalto_location_reporting_support_cb,
+					lr, NULL);
+
+	return 0;
+}
+
+static void gemalto_location_reporting_remove(struct ofono_location_reporting *lr)
+{
+	struct gps_data *gd = ofono_location_reporting_get_data(lr);
+
+	ofono_location_reporting_set_data(lr, NULL);
+
+	g_at_chat_unref(gd->chat);
+	g_free(gd);
+}
+
+static struct ofono_location_reporting_driver driver = {
+	.name			= "gemaltomodem",
+	.type			= OFONO_LOCATION_REPORTING_TYPE_NMEA,
+	.probe			= gemalto_location_reporting_probe,
+	.remove			= gemalto_location_reporting_remove,
+	.enable			= gemalto_location_reporting_enable,
+	.disable		= gemalto_location_reporting_disable,
+};
+
+void gemalto_location_reporting_init()
+{
+	ofono_location_reporting_driver_register(&driver);
+}
+
+void gemalto_location_reporting_exit()
+{
+	ofono_location_reporting_driver_unregister(&driver);
+}