---
 plugins/phonesim.c |  148 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 144 insertions(+), 4 deletions(-)

diff --git a/plugins/phonesim.c b/plugins/phonesim.c
index d2faf42..8c31df4 100644
--- a/plugins/phonesim.c
+++ b/plugins/phonesim.c
@@ -54,6 +54,7 @@
 #include <ofono/stk.h>
 #include <ofono/sms.h>
 #include <ofono/ssn.h>
+#include <ofono/text-telephony.h>
 #include <ofono/ussd.h>
 #include <ofono/voicecall.h>
 #include <ofono/gprs.h>
@@ -64,6 +65,7 @@
 #include <drivers/atmodem/atutil.h>
 
 static const char *none_prefix[] = { NULL };
+static const char *ptty_prefix[] = { "+PTTY:", NULL };
 static int next_iface = 0;
 
 struct phonesim_data {
@@ -78,6 +80,11 @@ struct gprs_context_data {
        char *interface;
 };
 
+struct text_telephony_data {
+       GAtChat *chat;
+       char *interface;
+};
+
 static void at_cgact_up_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
        struct cb_data *cbd = user_data;
@@ -190,12 +197,140 @@ static void phonesim_context_remove(struct 
ofono_gprs_context *gc)
        g_free(gcd);
 }
 
+static int phonesim_tty_probe(struct ofono_text_telephony *tt,
+                               unsigned int vendor, void *data)
+{
+       GAtChat *chat = data;
+       struct text_telephony_data *ttd;
+
+       ttd = g_try_new0(struct text_telephony_data, 1);
+       if (!ttd)
+               return -ENOMEM;
+
+       ttd->chat = g_at_chat_clone(chat);
+       ttd->interface = g_strdup_printf("dummy%d", next_iface++);
+
+       ofono_text_telephony_set_data(tt, ttd);
+       ofono_text_telephony_register(tt);
+
+       return 0;
+}
+
+static void phonesim_tty_remove(struct ofono_text_telephony *tt)
+{
+       struct text_telephony_data *ttd = ofono_text_telephony_get_data(tt);
+
+       DBG("");
+
+       ofono_text_telephony_set_data(tt, NULL);
+
+       g_at_chat_unref(ttd->chat);
+       g_free(ttd->interface);
+
+       g_free(ttd);
+}
+
+static void tty_query_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+       struct cb_data *cbd = user_data;
+       struct ofono_error error;
+       GAtResultIter iter;
+       ofono_text_telephony_query_cb_t cb = cbd->cb;
+       int value;
+
+       decode_at_error(&error, g_at_result_final_response(result));
+
+       if (!ok) {
+               cb(&error, -1, cbd->data);
+               return;
+       }
+
+       g_at_result_iter_init(&iter, result);
+
+       if (g_at_result_iter_next(&iter, "+PTTY:") == FALSE)
+               goto error;
+
+       if (g_at_result_iter_next_number(&iter, &value) == FALSE)
+               goto error;
+
+       cb(&error, value, cbd->data);
+
+       return;
+
+error:
+
+       CALLBACK_WITH_FAILURE(cb, -1, cbd->data);
+}
+
+static void phonesim_tty_query(struct ofono_text_telephony *tt,
+                               ofono_text_telephony_query_cb_t cb, void *data)
+{
+       struct text_telephony_data *ttd = ofono_text_telephony_get_data(tt);
+       struct cb_data *cbd = cb_data_new(cb, data);
+
+       DBG("");
+
+       if (!cbd)
+               goto error;
+
+       if (g_at_chat_send(ttd->chat, "AT+PTTY?", ptty_prefix,
+                               tty_query_cb, cbd, g_free) > 0)
+               return;
+
+error:
+       g_free(cbd);
+
+       CALLBACK_WITH_FAILURE(cb, 0, data);
+}
+
+static void tty_set_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+       struct cb_data *cbd = user_data;
+       ofono_text_telephony_set_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 phonesim_tty_set(struct ofono_text_telephony *tt, int enable,
+                               ofono_text_telephony_set_cb_t cb, void *data)
+{
+       struct text_telephony_data *ttd = ofono_text_telephony_get_data(tt);
+       struct cb_data *cbd = cb_data_new(cb, data);
+       char buf[12];
+
+       DBG("");
+
+       if (!cbd)
+               goto error;
+
+       enable = !!enable;
+       snprintf(buf, sizeof(buf), "AT+PTTY=%d", enable);
+
+       if (g_at_chat_send(ttd->chat, buf, none_prefix,
+                                       tty_set_cb, cbd, g_free) > 0)
+               return;
+
+error:
+       CALLBACK_WITH_FAILURE(cb, data);
+       g_free(cbd);
+}
+
 static struct ofono_gprs_context_driver context_driver = {
+       .name                   = "phonesim",
+       .probe                  = phonesim_context_probe,
+       .remove                 = phonesim_context_remove,
+       .activate_primary       = phonesim_activate_primary,
+       .deactivate_primary     = phonesim_deactivate_primary,
+};
+
+static struct ofono_text_telephony_driver tty_driver = {
        .name                   = "phonesim",
-       .probe                  = phonesim_context_probe,
-       .remove                 = phonesim_context_remove,
-       .activate_primary       = phonesim_activate_primary,
-       .deactivate_primary     = phonesim_deactivate_primary,
+       .probe                  = phonesim_tty_probe,
+       .remove                 = phonesim_tty_remove,
+       .query_tty              = phonesim_tty_query,
+       .set_tty                = phonesim_tty_set,
 };
 
 static int phonesim_probe(struct ofono_modem *modem)
@@ -465,6 +600,7 @@ static void phonesim_post_sim(struct ofono_modem *modem)
 
        DBG("%p", modem);
 
+       ofono_text_telephony_create(modem, 0, "phonesim", data->chat);
        ofono_phonebook_create(modem, 0, "atmodem", data->chat);
 
        if (!data->calypso)
@@ -630,6 +766,8 @@ static int phonesim_init(void)
 
        ofono_gprs_context_driver_register(&context_driver);
 
+       ofono_text_telephony_driver_register(&tty_driver);
+
        parse_config(CONFIGDIR "/phonesim.conf");
 
        return 0;
@@ -648,6 +786,8 @@ static void phonesim_exit(void)
        g_slist_free(modem_list);
        modem_list = NULL;
 
+       ofono_text_telephony_driver_unregister(&tty_driver);
+
        ofono_gprs_context_driver_unregister(&context_driver);
 
        ofono_modem_driver_unregister(&phonesim_driver);
-- 
1.7.3.2

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