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.

1 files changed, 73 insertions, 4 deletions

diff --git a/src/mm-port-qmi.c b/src/mm-port-qmi.c
index e3d99f7f..cc4b954f 100644
--- a/src/mm-port-qmi.c
+++ b/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;