[PATCH 0/6] Add a driver for u-blox modems

[PATCH 0/6] Add a driver for u-blox modems

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 996 bytes --]

This set of patches adds basic support for u-blox modems.  It has only
been tested with a u-blox SARA U270 modem but judging from the datasheet
it should be fairly trivial to adapt to other variants of the SARA, LISA
and LEON chips.


Philip Paeps (6):
  atmodem: add vendor u-blox
  udevng: add detection logic for u-blox modems
  plugins: new driver for u-blox SARA-U270 modems
  sim: query u-blox PIN retries with AT+UPINCNT
  gprs: add support for u-blox +UREG URCs
  atmodem: set the auth method for u-blox modems

 Makefile.am                    |    3 +
 drivers/atmodem/gprs-context.c |   29 +++-
 drivers/atmodem/gprs.c         |   44 ++++++
 drivers/atmodem/sim.c          |   45 +++++++
 drivers/atmodem/vendor.h       |    3 +-
 plugins/ublox.c                |  289 ++++++++++++++++++++++++++++++++++++++++
 plugins/udevng.c               |   42 ++++++
 7 files changed, 452 insertions(+), 3 deletions(-)
 create mode 100644 plugins/ublox.c

-- 
1.7.10.4

[PATCH 1/6] atmodem: add vendor u-blox

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 472 bytes --]

---
 drivers/atmodem/vendor.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/atmodem/vendor.h b/drivers/atmodem/vendor.h
index bf2b38a..de3c455 100644
--- a/drivers/atmodem/vendor.h
+++ b/drivers/atmodem/vendor.h
@@ -42,5 +42,6 @@ enum ofono_vendor {
 	OFONO_VENDOR_SIMCOM_SIM900,
 	OFONO_VENDOR_ICERA,
 	OFONO_VENDOR_WAVECOM_Q2XXX,
-	OFONO_VENDOR_ALCATEL
+	OFONO_VENDOR_ALCATEL,
+	OFONO_VENDOR_UBLOX
 };
-- 
1.7.10.4

[PATCH 2/6] udevng: add detection logic for u-blox modems

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 1851 bytes --]

---
 plugins/udevng.c |   42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/plugins/udevng.c b/plugins/udevng.c
index d41c6a8..42ee989 100644
--- a/plugins/udevng.c
+++ b/plugins/udevng.c
@@ -791,6 +791,46 @@ static gboolean setup_samsung(struct modem_info *modem)
 	return TRUE;
 }
 
+static gboolean setup_ublox(struct modem_info *modem)
+{
+	const char *aux = NULL, *mdm = NULL;
+	GSList *list;
+
+	DBG("%s", modem->syspath);
+
+	for (list = modem->devices; list; list = list->next) {
+		struct device_info *info = list->data;
+
+		DBG("%s %s %s %s", info->devnode, info->interface,
+					info->number, info->label);
+
+		if (g_strcmp0(info->label, "aux") == 0) {
+			aux = info->devnode;
+			if (mdm != NULL)
+				break;
+		} else if (g_strcmp0(info->label, "modem") == 0) {
+			mdm = info->devnode;
+			if (aux != NULL)
+				break;
+		} else if (g_strcmp0(info->interface, "2/2/1") == 0) {
+			if (g_strcmp0(info->number, "02") == 0)
+				aux = info->devnode;
+			else if (g_strcmp0(info->number, "00") == 0)
+				mdm = info->devnode;
+		}
+	}
+
+	if (aux == NULL || mdm == NULL)
+		return FALSE;
+
+	DBG("aux=%s modem=%s", aux, mdm);
+
+	ofono_modem_set_string(modem->modem, "Aux", aux);
+	ofono_modem_set_string(modem->modem, "Modem", mdm);
+
+	return TRUE;
+}
+
 static struct {
 	const char *name;
 	gboolean (*setup)(struct modem_info *modem);
@@ -815,6 +855,7 @@ static struct {
 	{ "zte",	setup_zte	},
 	{ "icera",	setup_icera	},
 	{ "samsung",	setup_samsung	},
+	{ "ublox",	setup_ublox	},
 	{ }
 };
 
@@ -1026,6 +1067,7 @@ static struct {
 	{ "nokia",	"option",	"0421", "0623"	},
 	{ "samsung",	"option",	"04e8", "6889"	},
 	{ "samsung",	"kalmia"			},
+	{ "ublox",	"cdc_acm",	"1546", "1102"	},
 	{ }
 };
 
-- 
1.7.10.4

[PATCH 3/6] plugins: new driver for u-blox SARA-U270 modems

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 8081 bytes --]

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.
---
 Makefile.am     |    3 +
 plugins/ublox.c |  289 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 292 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index cd83ef4..5f98f8e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -420,6 +420,9 @@ builtin_sources += plugins/connman.c
 builtin_modules += he910
 builtin_sources += plugins/he910.c
 
+builtin_modules += ublox
+builtin_sources += plugins/ublox.c
+
 if BLUETOOTH
 if BLUEZ4
 builtin_modules += bluez4
diff --git a/plugins/ublox.c b/plugins/ublox.c
new file mode 100644
index 0000000..4cdc966
--- /dev/null
+++ b/plugins/ublox.c
@@ -0,0 +1,289 @@
+/*
+ *
+ *  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>
+
+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_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", (int)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, TRUE);
+
+	g_at_chat_send(data->modem, "AT&C0", NULL, NULL, NULL, NULL);
+	g_at_chat_send(data->aux, "AT&C0", NULL, NULL, NULL, NULL);
+}
+
+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", NULL, NULL, NULL, NULL);
+	g_at_chat_send(data->aux, "ATE0 +CMEE=1", NULL, NULL, NULL, NULL);
+
+	g_at_chat_send(data->aux, "AT+CFUN=1", NULL, 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", NULL,
+					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, NULL, 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, 0, "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)
-- 
1.7.10.4

[PATCH 4/6] sim: query u-blox PIN retries with AT+UPINCNT

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 2277 bytes --]

---
 drivers/atmodem/sim.c |   45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/drivers/atmodem/sim.c b/drivers/atmodem/sim.c
index f8e0472..9b8d176 100644
--- a/drivers/atmodem/sim.c
+++ b/drivers/atmodem/sim.c
@@ -67,6 +67,7 @@ static const char *epin_prefix[] = { "*EPIN:", NULL };
 static const char *spic_prefix[] = { "+SPIC:", NULL };
 static const char *pct_prefix[] = { "#PCT:", NULL };
 static const char *pnnm_prefix[] = { "+PNNM:", NULL };
+static const char *upincnt_prefix[] = { "+UPINCNT:", NULL };
 static const char *none_prefix[] = { NULL };
 
 static void at_crsm_info_cb(gboolean ok, GAtResult *result, gpointer user_data)
@@ -967,6 +968,45 @@ error:
 	CALLBACK_WITH_FAILURE(cb, NULL, cbd->data);
 }
 
+static void upincnt_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	ofono_sim_pin_retries_cb_t cb = cbd->cb;
+	const char *final = g_at_result_final_response(result);
+	GAtResultIter iter;
+	struct ofono_error error;
+	int retries[OFONO_SIM_PASSWORD_INVALID];
+	size_t i;
+	static enum ofono_sim_password_type password_types[] = {
+		OFONO_SIM_PASSWORD_SIM_PIN,
+		OFONO_SIM_PASSWORD_SIM_PIN2,
+		OFONO_SIM_PASSWORD_SIM_PUK,
+		OFONO_SIM_PASSWORD_SIM_PUK2,
+	};
+
+	decode_at_error(&error, final);
+
+	if (!ok) {
+		cb(&error, NULL, cbd->data);
+		return;
+	}
+
+	g_at_result_iter_init(&iter, result);
+
+	if (!g_at_result_iter_next(&iter, "+UPINCNT:"))
+		goto error;
+
+	BUILD_PIN_RETRIES_ARRAY(password_types, ARRAY_SIZE(password_types),
+				retries);
+
+	cb(&error, retries, cbd->data);
+
+	return;
+
+error:
+	CALLBACK_WITH_FAILURE(cb, NULL, cbd->data);
+}
+
 static void at_pin_retries_query(struct ofono_sim *sim,
 					ofono_sim_pin_retries_cb_t cb,
 					void *data)
@@ -1028,6 +1068,11 @@ static void at_pin_retries_query(struct ofono_sim *sim,
 					at_pnnm_cb, cbd, g_free) > 0)
 			return;
 		break;
+	case OFONO_VENDOR_UBLOX:
+		if (g_at_chat_send(sd->chat, "AT+UPINCNT", upincnt_prefix,
+					upincnt_cb, cbd, g_free) > 0)
+			return;
+		break;
 	default:
 		if (g_at_chat_send(sd->chat, "AT+CPINR", cpinr_prefixes,
 					at_cpinr_cb, cbd, g_free) > 0)
-- 
1.7.10.4

[PATCH 5/6] gprs: add support for u-blox +UREG URCs

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 1751 bytes --]

---
 drivers/atmodem/gprs.c |   44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/drivers/atmodem/gprs.c b/drivers/atmodem/gprs.c
index 3005867..5551316 100644
--- a/drivers/atmodem/gprs.c
+++ b/drivers/atmodem/gprs.c
@@ -282,6 +282,44 @@ static void telit_mode_notify(GAtResult *result, gpointer user_data)
 	ofono_gprs_bearer_notify(gprs, bearer);
 }
 
+static void ublox_ureg_notify(GAtResult *result, gpointer user_data)
+{
+	struct ofono_gprs *gprs = user_data;
+	GAtResultIter iter;
+	gint state, bearer;
+
+	g_at_result_iter_init(&iter, result);
+
+	if (!g_at_result_iter_next(&iter, "+UREG:"))
+		return;
+
+	if (!g_at_result_iter_next_number(&iter, &state))
+		return;
+
+	switch (state) {
+	case 4:
+		bearer = 5;
+		break;
+	case 5:
+		bearer = 4;
+		break;
+	case 7:
+		/* XXX: reserved - assume none. */
+		bearer = 0;
+		break;
+	case 8:
+		bearer = 1;
+		break;
+	case 9:
+		bearer = 2;
+		break;
+	default:
+		bearer = state;
+	}
+
+	ofono_gprs_bearer_notify(gprs, bearer);
+}
+
 static void cpsb_notify(GAtResult *result, gpointer user_data)
 {
 	struct ofono_gprs *gprs = user_data;
@@ -316,6 +354,12 @@ static void gprs_initialized(gboolean ok, GAtResult *result, gpointer user_data)
 		g_at_chat_register(gd->chat, "^MODE:", huawei_mode_notify,
 						FALSE, gprs, NULL);
 		break;
+	case OFONO_VENDOR_UBLOX:
+		g_at_chat_register(gd->chat, "+UREG:", ublox_ureg_notify,
+						FALSE, gprs, NULL);
+		g_at_chat_send(gd->chat, "AT+UREG=1", none_prefix,
+						NULL, NULL, NULL);
+		break;
 	case OFONO_VENDOR_TELIT:
 		g_at_chat_register(gd->chat, "#PSNT:", telit_mode_notify,
 						FALSE, gprs, NULL);
-- 
1.7.10.4

[PATCH 6/6] atmodem: set the auth method for u-blox modems

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 1478 bytes --]

---
 drivers/atmodem/gprs-context.c |   29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/drivers/atmodem/gprs-context.c b/drivers/atmodem/gprs-context.c
index be44443..ebb4960 100644
--- a/drivers/atmodem/gprs-context.c
+++ b/drivers/atmodem/gprs-context.c
@@ -282,9 +282,34 @@ static void at_gprs_activate_primary(struct ofono_gprs_context *gc,
 
 	len = snprintf(buf, sizeof(buf), "AT+CGDCONT=%u,\"IP\"", ctx->cid);
 
-	if (ctx->apn)
-		snprintf(buf + len, sizeof(buf) - len - 3, ",\"%s\"",
+	if (ctx->apn) {
+		switch (gcd->vendor) {
+		case OFONO_VENDOR_UBLOX:
+			/*
+			 * U-blox modems require a magic prefix to the APN to
+			 * specify the authentication method to use in the
+			 * network.  See UBX-13002752 - R21.
+			 *
+			 * As the response of the read command omits this magic
+			 * prefix, this is the least invasive place to set it.
+			 */
+			switch (ctx->auth_method) {
+			case OFONO_GPRS_AUTH_METHOD_CHAP:
+				snprintf(buf + len, sizeof(buf) - len - 3,
+				    ",\"CHAP:%s\"", ctx->apn);
+				break;
+			case OFONO_GPRS_AUTH_METHOD_PAP:
+				snprintf(buf + len, sizeof(buf) - len - 3,
+				    ",\"PAP:%s\"", ctx->apn);
+				break;
+			}
+			break;
+		default:
+			snprintf(buf + len, sizeof(buf) - len - 3, ",\"%s\"",
 				ctx->apn);
+			break;
+		}
+	}
 
 	if (g_at_chat_send(gcd->chat, buf, none_prefix,
 				at_cgdcont_cb, gc, NULL) > 0)
-- 
1.7.10.4

Re: [PATCH 3/6] plugins: new driver for u-blox SARA-U270 modems

[Denis Kenzior]

[-- Attachment #1: Type: text/plain, Size: 3770 bytes --]

Hi Philip,

> +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);

Any reason data->modem is not being unrefed? e.g in the case of hot-unplug?

> +	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;
> +}
> +
> +

Please remove one whitespace.  Our coding style likes to use a single
empty line to separate functions.

> +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", (int)ok);

No need to cast

> +
> +	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, TRUE);
> +
> +	g_at_chat_send(data->modem, "AT&C0", NULL, NULL, NULL, NULL);
> +	g_at_chat_send(data->aux, "AT&C0", NULL, NULL, NULL, NULL);

Might want to use prefixes here

> +}
> +
> +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", NULL, NULL, NULL, NULL);
> +	g_at_chat_send(data->aux, "ATE0 +CMEE=1", NULL, NULL, NULL, NULL);
> +
> +	g_at_chat_send(data->aux, "AT+CFUN=1", NULL, cfun_enable,
> +					modem, NULL);

Prefix should probably be used.  Also, should this be CFUN=4 and not 1?
 enable() callback should be putting the modem in the SIM powered, RX/TX
off mode (e.g. Offline).

> +
> +	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", NULL,
> +					cfun_disable, modem, NULL);

This modem doesn't jump off the bus on CFUN=0, right?

> +
> +	return -EINPROGRESS;
> +}
> +

<snip>

Regards,
-Denis

Re: [PATCH 3/6] plugins: new driver for u-blox SARA-U270 modems

[Philip Paeps]

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On 2014-06-26 09:29:51 (-0500), Denis Kenzior <denkenz@gmail.com> wrote:
> > +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);
> 
> Any reason data->modem is not being unrefed? e.g in the case of hot-unplug?

As far as I can tell, disable is always called before remove.  In the
hot-unplug case, ofonod -d output goes:

ofonod[680]: src/gprs.c:gprs_remove() atom: 0x1443220
ofonod[680]: src/sim.c:sim_remove() atom: 0x1442fb0
ofonod[680]: src/modem.c:devinfo_remove() atom: 0x14425a0
ofonod[680]: plugins/ublox.c:ublox_disable() 0x143ba00
ofonod[680]: plugins/ublox.c:ublox_remove() 0x143ba00
ofonod[680]: src/modem.c:unregister_property() property 0x143bb00
ofonod[680]: src/modem.c:unregister_property() property 0x14448e0

Am I missing something?

> > +static int ublox_enable(struct ofono_modem *modem)
> > +   [...]
> > +	g_at_chat_send(data->aux, "AT+CFUN=1", NULL, cfun_enable,
> > +					modem, NULL);
> 
> Prefix should probably be used.  Also, should this be CFUN=4 and not 1?
>  enable() callback should be putting the modem in the SIM powered, RX/TX
> off mode (e.g. Offline).

Good point.  I'll fix that in the quectel driver too.

> > +static int ublox_disable(struct ofono_modem *modem)
> > +{
> > +   [...]
> > +	g_at_chat_send(data->aux, "AT+CFUN=0", NULL,
> > +					cfun_disable, modem, NULL);
> 
> This modem doesn't jump off the bus on CFUN=0, right?

Nope.  It stays on the bus with the radio off.

Thanks for the review!

Philip

-- 
Philip Paeps
Senior Reality Engineer
Ministry of Information

Re: [PATCH 3/6] plugins: new driver for u-blox SARA-U270 modems

[Denis Kenzior]

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Hi Philip,

On 06/26/2014 09:49 AM, Philip Paeps wrote:
> On 2014-06-26 09:29:51 (-0500), Denis Kenzior <denkenz@gmail.com> wrote:
>>> +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);
>>
>> Any reason data->modem is not being unrefed? e.g in the case of hot-unplug?
> 
> As far as I can tell, disable is always called before remove.  In the
> hot-unplug case, ofonod -d output goes:
> 
> ofonod[680]: src/gprs.c:gprs_remove() atom: 0x1443220
> ofonod[680]: src/sim.c:sim_remove() atom: 0x1442fb0
> ofonod[680]: src/modem.c:devinfo_remove() atom: 0x14425a0
> ofonod[680]: plugins/ublox.c:ublox_disable() 0x143ba00
> ofonod[680]: plugins/ublox.c:ublox_remove() 0x143ba00
> ofonod[680]: src/modem.c:unregister_property() property 0x143bb00
> ofonod[680]: src/modem.c:unregister_property() property 0x14448e0
> 
> Am I missing something?
> 

ofono_modem_remove calls disable() only if the modem is powered.  So in
cases of e.g. modem still being powered up, disable() won't be called.

Regards,
-Denis

[PATCH 3/6] plugins: new driver for u-blox SARA-U270 modems

[Philip Paeps]

[-- Attachment #1: Type: text/plain, Size: 8125 bytes --]

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.
---
 Makefile.am     |    3 +
 plugins/ublox.c |  291 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 294 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index cd83ef4..5f98f8e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -420,6 +420,9 @@ builtin_sources += plugins/connman.c
 builtin_modules += he910
 builtin_sources += plugins/he910.c
 
+builtin_modules += ublox
+builtin_sources += plugins/ublox.c
+
 if BLUETOOTH
 if BLUEZ4
 builtin_modules += bluez4
diff --git a/plugins/ublox.c b/plugins/ublox.c
new file mode 100644
index 0000000..99ddc81
--- /dev/null
+++ b/plugins/ublox.c
@@ -0,0 +1,291 @@
+/*
+ *
+ *  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", NULL, NULL, NULL, NULL);
+	g_at_chat_send(data->aux, "ATE0 +CMEE=1", NULL, 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)
-- 
1.7.10.4