Changeset 540e2d2 in mainline

Timestamp:

2011-02-20T12:38:40Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

3ae93a8

Parents:

745d2ad

Message:

Add creation of match ids from interface descriptor

Location:

uspace/lib/usb

Files:

• include/usb/recognise.h (modified) (1 diff)
• src/recognise.c (modified) (1 diff)

uspace/lib/usb/include/usb/recognise.h

@@ -41 +41 @@
 #include <ipc/devman.h>
 
+int usb_device_create_match_ids_from_interface(
+    const usb_standard_interface_descriptor_t *, match_id_list_t *);
+
 int usb_device_create_match_ids(usb_endpoint_pipe_t *, match_id_list_t *);
 

uspace/lib/usb/src/recognise.c

@@ -142 +142 @@
 }
 
+/** Create device match ids based on its interface.
+ *
+ * @param[in] descriptor Interface descriptor.
+ * @param[out] matches Initialized list of match ids.
+ * @return Error code (the two mentioned are not the only ones).
+ * @retval EINVAL Invalid input parameters (expects non NULL pointers).
+ * @retval ENOENT Interface does not specify class.
+ */
+int usb_device_create_match_ids_from_interface(
+    const usb_standard_interface_descriptor_t *descriptor,
+    match_id_list_t *matches)
+{
+        if (descriptor == NULL) {
+                return EINVAL;
+        }
+        if (matches == NULL) {
+                return EINVAL;
+        }
+
+        int rc;
+
+        if (descriptor->interface_class == USB_CLASS_USE_INTERFACE) {
+                return ENOENT;
+        }
+
+        const char *classname = usb_str_class(descriptor->interface_class);
+        assert(classname != NULL);
+
+        rc = usb_add_match_id(matches, 50,
+            "usb&interface&class=%s",
+            classname);
+        if (rc != EOK) {
+                return rc;
+        }
+
+        rc = usb_add_match_id(matches, 70,
+            "usb&interface&class=%s&subclass=0x%02x",
+            classname, descriptor->interface_subclass);
+        if (rc != EOK) {
+                return rc;
+        }
+
+        rc = usb_add_match_id(matches, 100,
+            "usb&interface&class=%s&subclass=0x%02x&protocol=0x%02x",
+            classname, descriptor->interface_subclass,
+            descriptor->interface_protocol);
+
+        return rc;
+}
+
 /** Create DDF match ids from USB device descriptor.
  *