huawei: add LTE support

Huawei LTE modems use AT^SYSCFGEX and AT^SYSINFOEX instead of
AT^SYSCFG and AT^SYSINFO.
If we want to be able to attach on LTE with this modem, we must use
AT^SYSCFGEX to configure rat mode and band. Using AT^SYSCFG, mode any
means UMTS or GSM.

1 files changed, 192 insertions, 17 deletions

diff --git a/drivers/huaweimodem/radio-settings.c b/drivers/huaweimodem/radio-settings.c
index c34653a5..65bae527 100644
--- a/drivers/huaweimodem/radio-settings.c
+++ b/drivers/huaweimodem/radio-settings.c
@@ -42,11 +42,13 @@
 
 static const char *none_prefix[] = { NULL };
 static const char *syscfg_prefix[] = { "^SYSCFG:", NULL };
+static const char *syscfgex_prefix[] = { "^SYSCFGEX:", NULL };
 
 #define HUAWEI_BAND_ANY 0x3FFFFFFF
 
 struct radio_settings_data {
 	GAtChat *chat;
+	ofono_bool_t syscfgex_cap;
 };
 
 static const struct huawei_band_gsm_table {
@@ -176,20 +178,76 @@ error:
 	CALLBACK_WITH_FAILURE(cb, -1, cbd->data);
 }
 
+static void syscfgex_query_mode_cb(gboolean ok, GAtResult *result,
+					gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	ofono_radio_settings_rat_mode_query_cb_t cb = cbd->cb;
+	enum ofono_radio_access_mode mode;
+	struct ofono_error error;
+	GAtResultIter iter;
+	const char *acqorder;
+
+	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, "^SYSCFGEX:") == FALSE)
+		goto error;
+
+	if (g_at_result_iter_next_string(&iter, &acqorder) == FALSE)
+		goto error;
+
+	if ((strcmp(acqorder, "00") == 0) ||
+			(strstr(acqorder, "01") &&
+				strstr(acqorder, "02") &&
+				strstr(acqorder, "03")))
+		mode = OFONO_RADIO_ACCESS_MODE_ANY;
+	else if (strstr(acqorder, "03"))
+		mode = OFONO_RADIO_ACCESS_MODE_LTE;
+	else if (strstr(acqorder, "02"))
+		mode = OFONO_RADIO_ACCESS_MODE_UMTS;
+	else if (strstr(acqorder, "01"))
+		mode = OFONO_RADIO_ACCESS_MODE_GSM;
+	else
+		goto error;
+
+	cb(&error, mode, cbd->data);
+
+	return;
+
+error:
+	CALLBACK_WITH_FAILURE(cb, -1, cbd->data);
+}
+
 static void huawei_query_rat_mode(struct ofono_radio_settings *rs,
 			ofono_radio_settings_rat_mode_query_cb_t cb, void *data)
 {
 	struct radio_settings_data *rsd = ofono_radio_settings_get_data(rs);
 	struct cb_data *cbd = cb_data_new(cb, data);
 
-	if (g_at_chat_send(rsd->chat, "AT^SYSCFG?", syscfg_prefix,
-				syscfg_query_mode_cb, cbd, g_free) == 0) {
-		CALLBACK_WITH_FAILURE(cb, -1, data);
-		g_free(cbd);
-	}
+	if (rsd->syscfgex_cap && g_at_chat_send(rsd->chat, "AT^SYSCFGEX?",
+					syscfgex_prefix,
+					syscfgex_query_mode_cb,
+					cbd, g_free) > 0)
+		return;
+
+	if (!rsd->syscfgex_cap && g_at_chat_send(rsd->chat, "AT^SYSCFG?",
+					syscfg_prefix,
+					syscfg_query_mode_cb,
+					cbd, g_free) > 0)
+		return;
+
+	CALLBACK_WITH_FAILURE(cb, -1, data);
+	g_free(cbd);
 }
 
-static void syscfg_modify_mode_cb(gboolean ok, GAtResult *result,
+static void syscfgxx_modify_mode_cb(gboolean ok, GAtResult *result,
 							gpointer user_data)
 {
 	struct cb_data *cbd = user_data;
@@ -200,12 +258,11 @@ static void syscfg_modify_mode_cb(gboolean ok, GAtResult *result,
 	cb(&error, cbd->data);
 }
 
-static void huawei_set_rat_mode(struct ofono_radio_settings *rs,
+static void syscfg_set_rat_mode(struct radio_settings_data *rsd,
 				enum ofono_radio_access_mode mode,
 				ofono_radio_settings_rat_mode_set_cb_t cb,
 				void *data)
 {
-	struct radio_settings_data *rsd = ofono_radio_settings_get_data(rs);
 	struct cb_data *cbd = cb_data_new(cb, data);
 	char buf[40];
 	unsigned int value = 2, acq_order = 0;
@@ -231,7 +288,7 @@ static void huawei_set_rat_mode(struct ofono_radio_settings *rs,
 							value, acq_order);
 
 	if (g_at_chat_send(rsd->chat, buf, none_prefix,
-					syscfg_modify_mode_cb, cbd, g_free) > 0)
+				syscfgxx_modify_mode_cb, cbd, g_free) > 0)
 		return;
 
 error:
@@ -239,7 +296,55 @@ error:
 	g_free(cbd);
 }
 
-static void syscfg_modify_band_cb(gboolean ok, GAtResult *result,
+static void syscfgex_set_rat_mode(struct radio_settings_data *rsd,
+				enum ofono_radio_access_mode mode,
+				ofono_radio_settings_rat_mode_set_cb_t cb,
+				void *data)
+{
+	struct cb_data *cbd = cb_data_new(cb, data);
+	char buf[50];
+	char *atcmd = "AT^SYSCFGEX=\"%s\",40000000,2,4,40000000,,";
+	char *acqorder = "030201";
+
+	switch (mode) {
+	case OFONO_RADIO_ACCESS_MODE_ANY:
+		acqorder = "00";
+		break;
+	case OFONO_RADIO_ACCESS_MODE_GSM:
+		acqorder = "01";
+		break;
+	case OFONO_RADIO_ACCESS_MODE_UMTS:
+		acqorder = "02";
+		break;
+	case OFONO_RADIO_ACCESS_MODE_LTE:
+		acqorder = "03";
+		break;
+	}
+
+	snprintf(buf, sizeof(buf), atcmd, acqorder);
+
+	if (g_at_chat_send(rsd->chat, buf, none_prefix,
+			syscfgxx_modify_mode_cb, cbd, g_free) > 0)
+		return;
+
+	CALLBACK_WITH_FAILURE(cb, data);
+	g_free(cbd);
+}
+
+static void huawei_set_rat_mode(struct ofono_radio_settings *rs,
+				enum ofono_radio_access_mode mode,
+				ofono_radio_settings_rat_mode_set_cb_t cb,
+				void *data)
+{
+	struct radio_settings_data *rsd = ofono_radio_settings_get_data(rs);
+
+	if (rsd->syscfgex_cap)
+		syscfgex_set_rat_mode(rsd, mode, cb, data);
+	else
+		syscfg_set_rat_mode(rsd, mode, cb, data);
+}
+
+static void syscfgxx_modify_band_cb(gboolean ok, GAtResult *result,
 							gpointer user_data)
 {
 	struct cb_data *cbd = user_data;
@@ -250,13 +355,54 @@ static void syscfg_modify_band_cb(gboolean ok, GAtResult *result,
 	cb(&error, cbd->data);
 }
 
-static void huawei_set_band(struct ofono_radio_settings *rs,
+static void syscfgex_set_band(struct radio_settings_data *rsd,
+					enum ofono_radio_band_gsm band_gsm,
+					enum ofono_radio_band_umts band_umts,
+					ofono_radio_settings_band_set_cb_t cb,
+					void *data)
+{
+	struct cb_data *cbd = cb_data_new(cb, data);
+	char buf[50];
+	char *atcmd = "AT^SYSCFGEX=\"99\",%x,2,4,40000000,,";
+	unsigned int huawei_band;
+
+	if (band_gsm == OFONO_RADIO_BAND_GSM_ANY
+			&& band_umts == OFONO_RADIO_BAND_UMTS_ANY) {
+		huawei_band = HUAWEI_BAND_ANY;
+	} else {
+		unsigned int huawei_band_gsm;
+		unsigned int huawei_band_umts;
+
+		huawei_band_gsm = band_gsm_to_huawei(band_gsm);
+
+		if (!huawei_band_gsm)
+			goto error;
+
+		huawei_band_umts = band_umts_to_huawei(band_umts);
+
+		if (!huawei_band_umts)
+			goto error;
+
+		huawei_band = huawei_band_gsm | huawei_band_umts;
+	}
+
+	snprintf(buf, sizeof(buf), atcmd, huawei_band);
+
+	if (g_at_chat_send(rsd->chat, buf, none_prefix,
+			syscfgxx_modify_band_cb, cbd, g_free) > 0)
+		return;
+
+error:
+	CALLBACK_WITH_FAILURE(cb, data);
+	g_free(cbd);
+}
+
+static void syscfg_set_band(struct radio_settings_data *rsd,
 					enum ofono_radio_band_gsm band_gsm,
 					enum ofono_radio_band_umts band_umts,
 					ofono_radio_settings_band_set_cb_t cb,
 					void *data)
 {
-	struct radio_settings_data *rsd = ofono_radio_settings_get_data(rs);
 	struct cb_data *cbd = cb_data_new(cb, data);
 	char buf[40];
 	unsigned int huawei_band;
@@ -284,7 +430,7 @@ static void huawei_set_band(struct ofono_radio_settings *rs,
 	snprintf(buf, sizeof(buf), "AT^SYSCFG=16,3,%x,2,4", huawei_band);
 
 	if (g_at_chat_send(rsd->chat, buf, none_prefix,
-					syscfg_modify_band_cb, cbd, g_free) > 0)
+				syscfgxx_modify_band_cb, cbd, g_free) > 0)
 		return;
 
 error:
@@ -292,6 +438,20 @@ error:
 	g_free(cbd);
 }
 
+static void huawei_set_band(struct ofono_radio_settings *rs,
+					enum ofono_radio_band_gsm band_gsm,
+					enum ofono_radio_band_umts band_umts,
+					ofono_radio_settings_band_set_cb_t cb,
+					void *data)
+{
+	struct radio_settings_data *rsd = ofono_radio_settings_get_data(rs);
+
+	if (rsd->syscfgex_cap)
+		syscfgex_set_band(rsd, band_gsm, band_umts, cb, data);
+	else
+		syscfg_set_band(rsd, band_gsm, band_umts, cb, data);
+}
+
 static void syscfg_query_band_cb(gboolean ok, GAtResult *result,
 					gpointer user_data)
 {
@@ -364,6 +524,21 @@ static void syscfg_support_cb(gboolean ok, GAtResult *result,
 	ofono_radio_settings_register(rs);
 }
 
+static void syscfgex_support_cb(gboolean ok, GAtResult *result,
+				gpointer user_data)
+{
+	struct ofono_radio_settings *rs = user_data;
+	struct radio_settings_data *rsd = ofono_radio_settings_get_data(rs);
+
+	if (!ok) {
+		g_at_chat_send(rsd->chat, "AT^SYSCFG=?", syscfg_prefix,
+					syscfg_support_cb, rs, NULL);
+	}
+
+	rsd->syscfgex_cap = 1;
+	ofono_radio_settings_register(rs);
+}
+
 static int huawei_radio_settings_probe(struct ofono_radio_settings *rs,
 					unsigned int vendor, void *data)
 {
@@ -378,8 +553,8 @@ static int huawei_radio_settings_probe(struct ofono_radio_settings *rs,
 
 	ofono_radio_settings_set_data(rs, rsd);
 
-	g_at_chat_send(rsd->chat, "AT^SYSCFG=?", syscfg_prefix,
-					syscfg_support_cb, rs, NULL);
+	g_at_chat_send(rsd->chat, "AT^SYSCFGEX=?", syscfgex_prefix,
+					syscfgex_support_cb, rs, NULL);
 
 	return 0;
 }
@@ -400,8 +575,8 @@ static struct ofono_radio_settings_driver driver = {
 	.remove			= huawei_radio_settings_remove,
 	.query_rat_mode		= huawei_query_rat_mode,
 	.set_rat_mode		= huawei_set_rat_mode,
-	.query_band             = huawei_query_band,
-	.set_band               = huawei_set_band,
+	.query_band		= huawei_query_band,
+	.set_band		= huawei_set_band,
 };
 
 void huawei_radio_settings_init(void)