+/**
+ * hdac_get_device_id - gets the hdac device id entry
+ * @hdev: HD-audio core device
+ * @drv: HD-audio codec driver
+ *
+ * Compares the hdac device vendor_id and revision_id to the hdac_device
+ * driver id_table and returns the matching device id entry.
+ */
+const struct hda_device_id *
+hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv)
+{
+ if (drv->id_table) {
+ const struct hda_device_id *id = drv->id_table;
+
+ while (id->vendor_id) {
+ if (hdev->vendor_id == id->vendor_id &&
+ (!id->rev_id || id->rev_id == hdev->revision_id))
+ return id;
+ id++;
+ }
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(hdac_get_device_id);
+
+static int hdac_codec_match(struct hdac_device *dev, struct hdac_driver *drv)
+{
+ if (hdac_get_device_id(dev, drv))
+ return 1;
+ else
+ return 0;
+}
+