port-qmi: keep track of the endpoint info

The endpoint info of a given MMPortQmi is immutable (it's associated
to the specific kernel driver in use and to the specific physical
interface number of the device).

We'll load it as soon as the kernel device object is set in the port,
and we'll keep it in the private struct so that it can be used at any
time, e.g. by the WDA Get/Set Data Format operations on newest
devices, where the endpoint info TLV is mandatory.

src/mm-modem-helpers-qmi.c

@@ -1538,6 +1538,27 @@ mm_bearer_ip_family_to_qmi_pdp_type (MMBearerIpFamily  ip_family,
     }
 }
 
+/*****************************************************************************/
+/* QMI/WDA to MM translations */
+
+QmiDataEndpointType
+mm_port_subsys_to_qmi_endpoint_type (MMPortSubsys subsys)
+{
+    switch (subsys) {
+        case MM_PORT_SUBSYS_USBMISC:
+            return QMI_DATA_ENDPOINT_TYPE_HSUSB;
+        case MM_PORT_SUBSYS_RPMSG:
+            return QMI_DATA_ENDPOINT_TYPE_EMBEDDED;
+        case MM_PORT_SUBSYS_UNKNOWN:
+        case MM_PORT_SUBSYS_TTY:
+        case MM_PORT_SUBSYS_NET:
+        case MM_PORT_SUBSYS_UNIX:
+        default:
+            g_assert_not_reached ();
+            break;
+    }
+}
+
 /*****************************************************************************/
 
 /**

src/mm-modem-helpers-qmi.h

@@ -21,6 +21,8 @@
 #include <ModemManager.h>
 #include <libqmi-glib.h>
 
+#include "mm-port.h"
+
 /*****************************************************************************/
 /* QMI/DMS to MM translations */
 
@@ -120,6 +122,11 @@ MMBearerIpFamily     mm_bearer_ip_family_from_qmi_pdp_type          (QmiWdsPdpTy
 gboolean             mm_bearer_ip_family_to_qmi_pdp_type            (MMBearerIpFamily  ip_family,
                                                                      QmiWdsPdpType    *out_pdp_type);
 
+/*****************************************************************************/
+/* QMI/WDA to MM translations */
+
+QmiDataEndpointType mm_port_subsys_to_qmi_endpoint_type (MMPortSubsys subsys);
+
 /*****************************************************************************/
 /* QMI/OMA to MM translations */
 

src/mm-port-qmi.c

@@ -22,6 +22,7 @@
 #include <mm-errors-types.h>
 
 #include "mm-port-qmi.h"
+#include "mm-modem-helpers-qmi.h"
 #include "mm-log-object.h"
 
 G_DEFINE_TYPE (MMPortQmi, mm_port_qmi, MM_TYPE_PORT)
@@ -33,10 +34,14 @@ typedef struct {
 } ServiceInfo;
 
 struct _MMPortQmiPrivate {
-    gboolean in_progress;
+    gboolean   in_progress;
     QmiDevice *qmi_device;
-    GList *services;
-    gboolean llp_is_raw_ip;
+    GList     *services;
+    gboolean   llp_is_raw_ip;
+    /* endpoint info */
+    gulong              endpoint_info_signal_id;
+    QmiDataEndpointType endpoint_type;
+    gint                endpoint_interface_number;
 };
 
 /*****************************************************************************/
@@ -98,6 +103,55 @@ mm_port_qmi_peek_device (MMPortQmi *self)
 
 /*****************************************************************************/
 
+static void
+initialize_endpoint_info (MMPortQmi *self)
+{
+    MMKernelDevice *kernel_device;
+
+    kernel_device = mm_port_peek_kernel_device (MM_PORT (self));
+
+    if (!kernel_device)
+        self->priv->endpoint_type = QMI_DATA_ENDPOINT_TYPE_UNDEFINED;
+    else
+        self->priv->endpoint_type = mm_port_subsys_to_qmi_endpoint_type (mm_port_get_subsys (MM_PORT (self)));
+
+    switch (self->priv->endpoint_type) {
+        case QMI_DATA_ENDPOINT_TYPE_HSUSB:
+            g_assert (kernel_device);
+            self->priv->endpoint_interface_number = mm_kernel_device_get_interface_number (kernel_device);
+            break;
+        case QMI_DATA_ENDPOINT_TYPE_EMBEDDED:
+            self->priv->endpoint_interface_number = 1;
+            break;
+        case QMI_DATA_ENDPOINT_TYPE_PCIE:
+        case QMI_DATA_ENDPOINT_TYPE_UNDEFINED:
+        case QMI_DATA_ENDPOINT_TYPE_HSIC:
+        case QMI_DATA_ENDPOINT_TYPE_BAM_DMUX:
+        case QMI_DATA_ENDPOINT_TYPE_UNKNOWN:
+        default:
+            self->priv->endpoint_interface_number = 0;
+            break;
+    }
+
+    mm_obj_dbg (self, "endpoint info updated: type '%s', interface number '%u'",
+                qmi_data_endpoint_type_get_string (self->priv->endpoint_type),
+                self->priv->endpoint_interface_number);
+}
+
+QmiDataEndpointType
+mm_port_qmi_get_endpoint_type (MMPortQmi *self)
+{
+    return self->priv->endpoint_type;
+}
+
+guint
+mm_port_qmi_get_endpoint_interface_number (MMPortQmi *self)
+{
+    return self->priv->endpoint_interface_number;
+}
+
+/*****************************************************************************/
+
 void
 mm_port_qmi_release_client (MMPortQmi     *self,
                             QmiService     service,
@@ -859,11 +913,21 @@ MMPortQmi *
 mm_port_qmi_new (const gchar  *name,
                  MMPortSubsys  subsys)
 {
-    return MM_PORT_QMI (g_object_new (MM_TYPE_PORT_QMI,
+    MMPortQmi *self;
+
+    self = MM_PORT_QMI (g_object_new (MM_TYPE_PORT_QMI,
                                       MM_PORT_DEVICE, name,
                                       MM_PORT_SUBSYS, subsys,
                                       MM_PORT_TYPE, MM_PORT_TYPE_QMI,
                                       NULL));
+
+    /* load endpoint info as soon as kernel device is set */
+    self->priv->endpoint_info_signal_id = g_signal_connect (self,
+                                                            "notify::" MM_PORT_KERNEL_DEVICE,
+                                                            G_CALLBACK (initialize_endpoint_info),
+                                                            NULL);
+
+    return self;
 }
 
 static void
@@ -878,6 +942,11 @@ dispose (GObject *object)
     MMPortQmi *self = MM_PORT_QMI (object);
     GList *l;
 
+    if (self->priv->endpoint_info_signal_id) {
+        g_signal_handler_disconnect (self, self->priv->endpoint_info_signal_id);
+        self->priv->endpoint_info_signal_id = 0;
+    }
+
     /* Deallocate all clients */
     for (l = self->priv->services; l; l = g_list_next (l)) {
         ServiceInfo *info = l->data;

src/mm-port-qmi.h

@@ -94,6 +94,9 @@ QmiClient *mm_port_qmi_get_client  (MMPortQmi *self,
 
 QmiDevice *mm_port_qmi_peek_device (MMPortQmi *self);
 
+QmiDataEndpointType mm_port_qmi_get_endpoint_type             (MMPortQmi *self);
+guint               mm_port_qmi_get_endpoint_interface_number (MMPortQmi *self);
+
 gboolean mm_port_qmi_llp_is_raw_ip (MMPortQmi *self);
 
 #endif /* MM_PORT_QMI_H */