The AT commands listed with AT+CLAC matches with MBM supported devices.
However, the mbm plugin doesn't work for this devices and the specification is
also quite different.

I have also adopted some fixes from huawei plugin to fix MeeGo bug #14784

Signed-off-by: Amit Mendapara <[email protected]>
---
 plugins/linktop.c |  301 ++++++++++++++++++++++++++++++++++++----------------
 1 files changed, 208 insertions(+), 93 deletions(-)

diff --git a/plugins/linktop.c b/plugins/linktop.c
index 953f634..26536d8 100644
--- a/plugins/linktop.c
+++ b/plugins/linktop.c
@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include <glib.h>
 #include <gatchat.h>
@@ -42,6 +43,7 @@
 #include <ofono/message-waiting.h>
 #include <ofono/netreg.h>
 #include <ofono/sim.h>
+#include <ofono/stk.h>
 #include <ofono/cbs.h>
 #include <ofono/sms.h>
 #include <ofono/ussd.h>
@@ -53,16 +55,21 @@
 #include <ofono/radio-settings.h>
 #include <ofono/log.h>
 
-#include <drivers/atmodem/vendor.h>
 #include <drivers/atmodem/atutil.h>
+#include <drivers/atmodem/vendor.h>
 
+static const char *cpin_prefix[] = { "+CPIN:", NULL };
 static const char *none_prefix[] = { NULL };
 
 struct linktop_data {
-       GAtChat *modem;
-       GAtChat *control;
+       GAtChat *modem_port;
+       GAtChat *data_port;
+       guint cpin_poll_source;
+       guint cpin_poll_count;
+       gboolean have_sim;
        struct ofono_gprs *gprs;
        struct ofono_gprs_context *gc;
+       guint reopen_source;
 };
 
 static int linktop_probe(struct ofono_modem *modem)
@@ -86,35 +93,86 @@ static void linktop_remove(struct ofono_modem *modem)
 
        DBG("%p", modem);
 
+       if (data->reopen_source > 0) {
+               g_source_remove(data->reopen_source);
+               data->reopen_source = 0;
+       }
+
        ofono_modem_set_data(modem, NULL);
 
-       g_at_chat_unref(data->modem);
-       g_at_chat_unref(data->control);
+       g_at_chat_unref(data->data_port);
+       g_at_chat_unref(data->modem_port);
+
+       if (data->cpin_poll_source > 0)
+               g_source_remove(data->cpin_poll_source);
 
        g_free(data);
 }
 
 static void linktop_debug(const char *str, void *user_data)
 {
-        const char *prefix = user_data;
+       const char *prefix = user_data;
+
+       ofono_info("%s%s", prefix, str);
+}
+
+static gboolean init_simpin_check(gpointer user_data);
+
+static void simpin_check(gboolean ok, GAtResult *result, gpointer user_data)
+{
+       struct ofono_modem *modem = user_data;
+       struct linktop_data *data = ofono_modem_get_data(modem);
 
-        ofono_info("%s%s", prefix, str);
+       DBG("");
+
+       /* Modem returns an error if SIM is not ready. */
+       if (!ok && data->cpin_poll_count++ < 5) {
+               data->cpin_poll_source =
+                       g_timeout_add_seconds(1, init_simpin_check, modem);
+               return;
+       }
+
+       data->cpin_poll_count = 0;
+
+       /* There is probably no SIM if SIM is not ready after 5 seconds. */
+       data->have_sim = ok;
+
+       ofono_modem_set_powered(modem, TRUE);
 }
 
-static GAtChat *open_device(struct ofono_modem *modem,
-                               const char *key, char *debug)
+static gboolean init_simpin_check(gpointer user_data)
+{
+       struct ofono_modem *modem = user_data;
+       struct linktop_data *data = ofono_modem_get_data(modem);
+
+       data->cpin_poll_source = 0;
+
+       g_at_chat_send(data->modem_port, "AT+CPIN?", cpin_prefix,
+                       simpin_check, modem, NULL);
+
+       return FALSE;
+}
+
+static void cfun_enable(gboolean ok, GAtResult *result, gpointer user_data)
+{
+       struct ofono_modem *modem = user_data;
+
+       DBG("");
+
+       if (!ok) {
+               ofono_modem_set_powered(modem, FALSE);
+               return;
+       }
+
+       init_simpin_check(modem);
+}
+
+static GAtChat *create_port(const char *device)
 {
-       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;
@@ -127,81 +185,116 @@ static GAtChat *open_device(struct ofono_modem *modem,
        if (chat == NULL)
                return NULL;
 
-       if (getenv("OFONO_AT_DEBUG"))
-               g_at_chat_set_debug(chat, linktop_debug, debug);
-
        return chat;
 }
 
-static void linktop_disconnect(gpointer user_data)
+static void linktop_disconnect(gpointer user_data);
+
+static gboolean reopen_callback(gpointer user_data)
 {
        struct ofono_modem *modem = user_data;
        struct linktop_data *data = ofono_modem_get_data(modem);
+       const char *data_dev;
+
+       data_dev = ofono_modem_get_string(modem, "DataDevice");
+       data->data_port = create_port(data_dev);
+       /* retry once if failed */
+       if (data->data_port == NULL) {
+               if (data->reopen_source > 0)
+                       return FALSE;
+
+               data->reopen_source = g_timeout_add_seconds(1,
+                               reopen_callback, modem);
+               ofono_debug("opening data port failed, retrying...");
+               return FALSE;
+       }
 
-       DBG("");
-
-       if (data->gc)
-               ofono_gprs_context_remove(data->gc);
-
-       g_at_chat_unref(data->modem);
-       data->modem = NULL;
-
-       data->modem = open_device(modem, "Modem", "Modem: ");
-       if (data->modem == NULL)
-               return;
+       if (getenv("OFONO_AT_DEBUG"))
+               g_at_chat_set_debug(data->data_port, linktop_debug, "Data: ");
 
-       g_at_chat_set_disconnect_function(data->modem,
+       g_at_chat_set_disconnect_function(data->data_port,
                                                linktop_disconnect, modem);
 
        ofono_info("Reopened GPRS context channel");
 
-       data->gc = ofono_gprs_context_create(modem, 0, "atmodem", data->modem);
-
-       if (data->gprs && data->gc)
+       data->gc = ofono_gprs_context_create(modem, 0,
+                                       "atmodem", data->data_port);
+       if (data->gprs && data->gc) {
                ofono_gprs_add_context(data->gprs, data->gc);
+       }
+
+       data->reopen_source = 0;
+
+       return FALSE;
 }
 
-static void cfun_enable(gboolean ok, GAtResult *result, gpointer user_data)
+static void linktop_disconnect(gpointer user_data)
 {
        struct ofono_modem *modem = user_data;
+       struct linktop_data *data = ofono_modem_get_data(modem);
 
-       DBG("");
+       DBG("%p, data->gc %p", modem, data->gc);
+
+       /* gprs_context has been destructed and needs not reopen */
+       if (data->gc == NULL)
+               return
+       
+       ofono_gprs_context_remove(data->gc);
 
-       ofono_modem_set_powered(modem, ok);
+       g_at_chat_unref(data->data_port);
+       data->data_port = NULL;
+
+       /* Waiting for the +CGEV: ME DEACT might also work */
+       if (data->reopen_source > 0)
+               g_source_remove(data->reopen_source);
+
+       data->reopen_source = g_timeout_add_seconds(1, reopen_callback, modem);
 }
 
 static int linktop_enable(struct ofono_modem *modem)
 {
        struct linktop_data *data = ofono_modem_get_data(modem);
+       const char *modem_dev;
+       const char *data_dev;
 
        DBG("%p", modem);
 
-       data->modem = open_device(modem, "Modem", "Modem: ");
-       if (data->modem == NULL)
-               return -EINVAL;
+       modem_dev = ofono_modem_get_string(modem, "ModemDevice");
+       data_dev = ofono_modem_get_string(modem, "DataDevice");
 
-       g_at_chat_set_disconnect_function(data->modem,
-                                               linktop_disconnect, modem);
+       DBG("%s, %s", modem_dev, data_dev);
+
+       if (modem_dev == NULL || data_dev == NULL)
+               return -EINVAL;
 
-       data->control = open_device(modem, "Control", "Control: ");
-       if (data->control == NULL) {
-               g_at_chat_unref(data->modem);
-               data->modem = NULL;
+       data->modem_port = create_port(modem_dev);
+       if (data->modem_port == NULL)
                return -EIO;
-       }
 
-       g_at_chat_send(data->control, "ATE0 +CMEE=1", none_prefix,
-                                               NULL, NULL, NULL);
+       if (getenv("OFONO_AT_DEBUG"))
+               g_at_chat_set_debug(data->modem_port, linktop_debug, "Modem: ");
+
+       data->data_port = create_port(data_dev);
+       if (data->data_port == NULL) {
+               g_at_chat_unref(data->modem_port);
+               data->modem_port = NULL;
 
-       g_at_chat_send(data->modem, "AT", none_prefix,
-                                               NULL, NULL, NULL);
+               return -EIO;
+       }
 
-       g_at_chat_send(data->modem, "AT &F", none_prefix,
-                                               NULL, NULL, NULL);
+       if (getenv("OFONO_AT_DEBUG"))
+               g_at_chat_set_debug(data->data_port, linktop_debug, "Data: ");
 
-       g_at_chat_send(data->control, "AT+CFUN=4", none_prefix,
-                                       cfun_enable, modem, NULL);
+       g_at_chat_set_disconnect_function(data->data_port,
+                                               linktop_disconnect, modem);
 
+       g_at_chat_send(data->modem_port, "AT&F E0 V1 X4 &C1 +CMEE=1", NULL,
+                                       NULL, NULL, NULL);
+       g_at_chat_send(data->data_port, "AT&F E0 V1 X4 &C1 +CMEE=1", NULL,
+                                       NULL, NULL, NULL);
+       g_at_chat_send(data->modem_port, "AT+CFUN=4", none_prefix,
+                               cfun_enable, modem, NULL);
+       
        return -EINPROGRESS;
 }
 
@@ -212,8 +305,11 @@ static void cfun_disable(gboolean ok, GAtResult *result, 
gpointer user_data)
 
        DBG("");
 
-       g_at_chat_unref(data->control);
-       data->control = NULL;
+       g_at_chat_unref(data->modem_port);
+       data->modem_port = NULL;
+
+       g_at_chat_unref(data->data_port);
+       data->data_port = NULL;
 
        if (ok)
                ofono_modem_set_powered(modem, FALSE);
@@ -225,19 +321,17 @@ static int linktop_disable(struct ofono_modem *modem)
 
        DBG("%p", modem);
 
-       if (data->modem) {
-               g_at_chat_cancel_all(data->modem);
-               g_at_chat_unregister_all(data->modem);
-               g_at_chat_unref(data->modem);
-               data->modem = NULL;
+       if (data->reopen_source > 0) {
+               g_source_remove(data->reopen_source);
+               data->reopen_source = 0;
        }
 
-       if (data->control == NULL)
+       if (data->modem_port == NULL)
                return 0;
 
-       g_at_chat_cancel_all(data->control);
-       g_at_chat_unregister_all(data->control);
-       g_at_chat_send(data->control, "AT+CFUN=4", none_prefix,
+       g_at_chat_cancel_all(data->modem_port);
+       g_at_chat_unregister_all(data->modem_port);
+       g_at_chat_send(data->modem_port, "AT+CFUN=4", NULL,
                                        cfun_disable, modem, NULL);
 
        return -EINPROGRESS;
@@ -253,17 +347,37 @@ static void set_online_cb(gboolean ok, GAtResult *result, 
gpointer user_data)
        cb(&error, cbd->data);
 }
 
+static void set_offline_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;
+
+       if (ok) {
+               struct linktop_data *data = cbd->user;
+
+               data->gc = NULL;
+               data->gprs = NULL;
+       }
+
+       decode_at_error(&error, g_at_result_final_response(result));
+       cb(&error, cbd->data);
+}
+
 static void linktop_set_online(struct ofono_modem *modem, ofono_bool_t online,
                                ofono_modem_online_cb_t cb, void *user_data)
 {
        struct linktop_data *data = ofono_modem_get_data(modem);
-       GAtChat *chat = data->control;
+       GAtChat *chat = data->modem_port;
        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(chat, command, NULL, set_online_cb, cbd, g_free))
+       cbd->user = data;
+
+       if (g_at_chat_send(chat, command, NULL,
+                               online ? set_online_cb : set_offline_cb, cbd, 
g_free))
                return;
 
        g_free(cbd);
@@ -278,11 +392,11 @@ static void linktop_pre_sim(struct ofono_modem *modem)
 
        DBG("%p", modem);
 
-       ofono_devinfo_create(modem, 0, "atmodem", data->control);
-       sim = ofono_sim_create(modem, 0, "atmodem", data->control);
-       ofono_voicecall_create(modem, 0, "stemodem", data->control);
+       ofono_devinfo_create(modem, 0, "atmodem", data->modem_port);
+       sim = ofono_sim_create(modem, 0, "atmodem", data->modem_port);
+       ofono_voicecall_create(modem, 0, "stemodem", data->modem_port);
 
-       if (sim)
+       if (data->have_sim && sim)
                ofono_sim_inserted_notify(sim, TRUE);
 }
 
@@ -292,35 +406,36 @@ static void linktop_post_sim(struct ofono_modem *modem)
 
        DBG("%p", modem);
 
-       ofono_radio_settings_create(modem, 0, "stemodem", data->control);
-       ofono_phonebook_create(modem, 0, "atmodem", data->control);
-       ofono_sms_create(modem, 0, "atmodem", data->control);
+       ofono_stk_create(modem, 0, "mbmmodem", data->modem_port);
+       ofono_radio_settings_create(modem, 0, "stemodem", data->modem_port);
+       ofono_phonebook_create(modem, 0, "atmodem", data->modem_port);
+       ofono_sms_create(modem, 0, "atmodem", data->modem_port);
 }
 
 static void linktop_post_online(struct ofono_modem *modem)
 {
        struct linktop_data *data = ofono_modem_get_data(modem);
        struct ofono_message_waiting *mw;
-       struct ofono_gprs *gprs;
-       struct ofono_gprs_context *gc;
 
        DBG("%p", modem);
 
-       ofono_ussd_create(modem, 0, "atmodem", data->control);
-       ofono_call_forwarding_create(modem, 0, "atmodem", data->control);
-       ofono_call_settings_create(modem, 0, "atmodem", data->control);
-       ofono_netreg_create(modem, OFONO_VENDOR_MBM, "atmodem", data->control);
-       ofono_call_meter_create(modem, 0, "atmodem", data->control);
-       ofono_call_barring_create(modem, 0, "atmodem", data->control);
-       ofono_call_volume_create(modem, 0, "atmodem", data->control);
-       ofono_cbs_create(modem, 0, "atmodem", data->control);
-
-       gprs = ofono_gprs_create(modem, OFONO_VENDOR_MBM,
-                                       "atmodem", data->control);
-       gc = ofono_gprs_context_create(modem, 0, "atmodem", data->modem);
-
-       if (gprs && gc)
-               ofono_gprs_add_context(gprs, gc);
+       ofono_netreg_create(modem, 0, "atmodem", data->modem_port);
+       ofono_cbs_create(modem, 0, "atmodem", data->modem_port);
+       ofono_ussd_create(modem, 0, "atmodem", data->modem_port);
+       ofono_call_forwarding_create(modem, 0, "atmodem", data->modem_port);
+       ofono_call_settings_create(modem, 0, "atmodem", data->modem_port);
+       ofono_call_meter_create(modem, 0, "atmodem", data->modem_port);
+       ofono_call_barring_create(modem, 0, "atmodem", data->modem_port);
+       ofono_call_volume_create(modem, 0, "atmodem", data->modem_port);
+
+       data->gprs = ofono_gprs_create(modem, 0,
+                                       "atmodem", data->modem_port);
+       data->gc = ofono_gprs_context_create(modem, 0,
+                                       "atmodem", data->data_port);
+
+       if (data->gprs && data->gc) {
+               ofono_gprs_add_context(data->gprs, data->gc);
+       }
 
        mw = ofono_message_waiting_create(modem);
 
-- 
1.7.4.1

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