From fabab906a37731237483a342e68732efd5c5ca2c Mon Sep 17 00:00:00 2001
From: Muhammad Asif <thevancedgamer@mentallysanemainliners.org>
Date: Mon, 22 Dec 2025 02:15:32 +0500
Subject: [PATCH] devices: wwan: add support for changing capabilities of modem
 after initialization

Signed-off-by: Muhammad Asif <thevancedgamer@mentallysanemainliners.org>
---
 src/core/devices/wwan/nm-device-modem.c | 18 ++++++++++++++++++
 src/core/devices/wwan/nm-modem.c        | 21 +++++++++++++++++++++
 src/core/devices/wwan/nm-modem.h        | 21 +++++++++++++--------
 3 files changed, 52 insertions(+), 8 deletions(-)

diff --git a/src/core/devices/wwan/nm-device-modem.c b/src/core/devices/wwan/nm-device-modem.c
index a8a48ce6ab..ba77ca5067 100644
--- a/src/core/devices/wwan/nm-device-modem.c
+++ b/src/core/devices/wwan/nm-device-modem.c
@@ -327,6 +327,23 @@ modem_state_cb(NMModem *modem, int new_state_i, int old_state_i, gpointer user_d
                                       NM_DEVICE_STATE_REASON_MODEM_FAILED);
 }
 
+static void
+caps_changed_cb(NMModem *modem, guint modem_caps, guint current_caps, gpointer user_data)
+{
+    NMDeviceModem        *self = NM_DEVICE_MODEM(user_data);
+    NMDeviceModemPrivate *priv = NM_DEVICE_MODEM_GET_PRIVATE(self);
+
+    if (priv->caps != modem_caps) {
+        priv->caps = modem_caps;
+        _notify(self, PROP_CAPABILITIES);
+    }
+
+    if (priv->current_caps != current_caps) {
+        priv->current_caps = current_caps;
+        _notify(self, PROP_CURRENT_CAPABILITIES);
+    }
+}
+
 static void
 modem_removed_cb(NMModem *modem, gpointer user_data)
 {
@@ -677,6 +694,7 @@ set_modem(NMDeviceModem *self, NMModem *modem)
     g_signal_connect(modem, NM_MODEM_AUTH_REQUESTED, G_CALLBACK(modem_auth_requested), self);
     g_signal_connect(modem, NM_MODEM_AUTH_RESULT, G_CALLBACK(modem_auth_result), self);
     g_signal_connect(modem, NM_MODEM_STATE_CHANGED, G_CALLBACK(modem_state_cb), self);
+    g_signal_connect(modem, NM_MODEM_CAPABILITIES_CHANGED, G_CALLBACK(caps_changed_cb), self);
     g_signal_connect(modem, NM_MODEM_REMOVED, G_CALLBACK(modem_removed_cb), self);
 
     g_signal_connect(modem,
diff --git a/src/core/devices/wwan/nm-modem.c b/src/core/devices/wwan/nm-modem.c
index 0862167223..a9c25f8607 100644
--- a/src/core/devices/wwan/nm-modem.c
+++ b/src/core/devices/wwan/nm-modem.c
@@ -51,6 +51,7 @@ enum {
     AUTH_RESULT,
     REMOVED,
     STATE_CHANGED,
+    CAPABILITIES_CHANGED,
     LAST_SIGNAL,
 };
 
@@ -338,6 +339,14 @@ nm_modem_set_state(NMModem *self, NMModemState new_state, const char *reason)
     }
 }
 
+void
+nm_modem_set_capabilities(NMModem                  *self,
+                          NMDeviceModemCapabilities modem_caps,
+                          NMDeviceModemCapabilities current_caps)
+{
+    g_signal_emit(self, signals[CAPABILITIES_CHANGED], 0, (guint) modem_caps, (guint) current_caps);
+}
+
 void
 nm_modem_set_prev_state(NMModem *self, const char *reason)
 {
@@ -2004,4 +2013,16 @@ nm_modem_class_init(NMModemClass *klass)
                                           2,
                                           G_TYPE_INT,
                                           G_TYPE_INT);
+
+    signals[CAPABILITIES_CHANGED] = g_signal_new(NM_MODEM_CAPABILITIES_CHANGED,
+                                                 G_OBJECT_CLASS_TYPE(object_class),
+                                                 G_SIGNAL_RUN_FIRST,
+                                                 0,
+                                                 NULL,
+                                                 NULL,
+                                                 NULL,
+                                                 G_TYPE_NONE,
+                                                 2,
+                                                 G_TYPE_UINT,
+                                                 G_TYPE_UINT);
 }
diff --git a/src/core/devices/wwan/nm-modem.h b/src/core/devices/wwan/nm-modem.h
index 6900036099..1b79d67d61 100644
--- a/src/core/devices/wwan/nm-modem.h
+++ b/src/core/devices/wwan/nm-modem.h
@@ -33,14 +33,15 @@
 #define NM_MODEM_DEVICE_UID      "device-uid"
 
 /* Signals */
-#define NM_MODEM_PPP_STATS      "ppp-stats"
-#define NM_MODEM_PPP_FAILED     "ppp-failed"
-#define NM_MODEM_PREPARE_RESULT "prepare-result"
-#define NM_MODEM_NEW_CONFIG     "new-config"
-#define NM_MODEM_AUTH_REQUESTED "auth-requested"
-#define NM_MODEM_AUTH_RESULT    "auth-result"
-#define NM_MODEM_REMOVED        "removed"
-#define NM_MODEM_STATE_CHANGED  "state-changed"
+#define NM_MODEM_PPP_STATS            "ppp-stats"
+#define NM_MODEM_PPP_FAILED           "ppp-failed"
+#define NM_MODEM_PREPARE_RESULT       "prepare-result"
+#define NM_MODEM_NEW_CONFIG           "new-config"
+#define NM_MODEM_AUTH_REQUESTED       "auth-requested"
+#define NM_MODEM_AUTH_RESULT          "auth-result"
+#define NM_MODEM_REMOVED              "removed"
+#define NM_MODEM_STATE_CHANGED        "state-changed"
+#define NM_MODEM_CAPABILITIES_CHANGED "capabilities-changed"
 
 typedef enum {
     NM_MODEM_IP_METHOD_UNKNOWN = 0,
@@ -215,6 +216,10 @@ void         nm_modem_set_state(NMModem *self, NMModemState new_state, const cha
 void         nm_modem_set_prev_state(NMModem *self, const char *reason);
 const char  *nm_modem_state_to_string(NMModemState state);
 
+void nm_modem_set_capabilities(NMModem                  *self,
+                               NMDeviceModemCapabilities modem_caps,
+                               NMDeviceModemCapabilities current_caps);
+
 NMModemIPType nm_modem_get_supported_ip_types(NMModem *self);
 
 /* For the modem-manager only */