Changeset 8ba18c6 in mainline

Timestamp:

2011-02-20T17:02:53Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5c3ace2

Parents:

18cb870

Message:

MID driver can tell interface number to child

Location:

uspace/drv/usbmid

Files:

• usbmid.c (modified) (5 diffs)
• usbmid.h (modified) (1 diff)

uspace/drv/usbmid/usbmid.c

@@ -68 +68 @@
 }
 
+/** Callback for DDF USB interface. */
+static int usb_iface_get_interface_impl(device_t *device, devman_handle_t handle,
+    int *iface_no)
+{
+        assert(device);
+
+        usbmid_interface_t *iface = device->driver_data;
+        assert(iface);
+
+        if (iface_no != NULL) {
+                *iface_no = iface->interface_no;
+        }
+
+        return EOK;
+}
+
 static usb_iface_t child_usb_iface = {
         .get_hc_handle = usb_iface_get_hc_handle_hub_child_impl,
-        .get_address = usb_iface_get_address_impl
+        .get_address = usb_iface_get_address_impl,
+        .get_interface = usb_iface_get_interface_impl
 };
 
@@ -121 +138 @@
 }
 
+/** Create new interface for USB MID device.
+ *
+ * @param dev Backing generic DDF child device (representing interface).
+ * @param iface_no Interface number.
+ * @return New interface.
+ * @retval NULL Error occured.
+ */
+usbmid_interface_t *usbmid_interface_create(device_t *dev, int iface_no)
+{
+        usbmid_interface_t *iface = malloc(sizeof(usbmid_interface_t));
+        if (iface == NULL) {
+                usb_log_error("Out of memory (wanted %zuB).\n",
+                    sizeof(usbmid_interface_t));
+                return NULL;
+        }
+
+        iface->dev = dev;
+        iface->interface_no = iface_no;
+
+        return iface;
+}
+
 
 /** Spawn new child device from one interface.
@@ -135 +174 @@
         device_t *child = NULL;
         char *child_name = NULL;
+        usbmid_interface_t *child_as_interface = NULL;
         int rc;
 
@@ -155 +195 @@
                 goto error_leave;
         }
+
+        child_as_interface = usbmid_interface_create(child,
+            (int) interface_descriptor->interface_number);
+        if (child_as_interface == NULL) {
+                rc = ENOMEM;
+                goto error_leave;
+        }
+
+        child->driver_data = child_as_interface;
         child->parent = parent->dev;
         child->name = child_name;
@@ -181 +230 @@
                 free(child_name);
         }
+        if (child_as_interface != NULL) {
+                free(child_as_interface);
+        }
 
         return rc;

uspace/drv/usbmid/usbmid.h

@@ -54 +54 @@
 } usbmid_device_t;
 
+typedef struct {
+        /** Device container. */
+        device_t *dev;
+
+        /** Interface number. */
+        int interface_no;
+} usbmid_interface_t;
+
 usbmid_device_t *usbmid_device_create(device_t *);
+usbmid_interface_t *usbmid_interface_create(device_t *, int);
 bool usbmid_explore_device(usbmid_device_t *);
 int usbmid_spawn_interface_child(usbmid_device_t *,