diff --git a/include/hardware/audio.h b/include/hardware/audio.h
index cbcb954..d0648b7 100644
--- a/include/hardware/audio.h
+++ b/include/hardware/audio.h
@@ -54,7 +54,8 @@
 #define AUDIO_DEVICE_API_VERSION_0_0 HARDWARE_DEVICE_API_VERSION(0, 0)
 #define AUDIO_DEVICE_API_VERSION_1_0 HARDWARE_DEVICE_API_VERSION(1, 0)
 #define AUDIO_DEVICE_API_VERSION_2_0 HARDWARE_DEVICE_API_VERSION(2, 0)
-#define AUDIO_DEVICE_API_VERSION_CURRENT AUDIO_DEVICE_API_VERSION_2_0
+#define AUDIO_DEVICE_API_VERSION_3_0 HARDWARE_DEVICE_API_VERSION(3, 0)
+#define AUDIO_DEVICE_API_VERSION_CURRENT AUDIO_DEVICE_API_VERSION_3_0
 /* Minimal audio HAL version supported by the audio framework */
 #define AUDIO_DEVICE_API_VERSION_MIN AUDIO_DEVICE_API_VERSION_2_0
 
@@ -563,6 +564,38 @@
      * method may leave it set to NULL.
      */
     int (*get_master_mute)(struct audio_hw_device *dev, bool *mute);
+
+    /**
+     * Routing control
+     */
+
+    /* Creates an audio patch between several source and sink ports.
+     * The handle is allocated by the HAL and should be unique for this
+     * audio HAL module. */
+    int (*create_audio_patch)(struct audio_hw_device *dev,
+                               unsigned int num_sources,
+                               const struct audio_port_config *sources,
+                               unsigned int num_sinks,
+                               const struct audio_port_config *sinks,
+                               audio_patch_handle_t *handle);
+
+    /* Release an audio patch */
+    int (*release_audio_patch)(struct audio_hw_device *dev,
+                               audio_patch_handle_t handle);
+
+    /* Fills the list of supported attributes for a given audio port.
+     * As input, "port" contains the information (type, role, address etc...)
+     * needed by the HAL to identify the port.
+     * As output, "port" contains possible attributes (sampling rates, formats,
+     * channel masks, gain controllers...) for this port.
+     */
+    int (*get_audio_port)(struct audio_hw_device *dev,
+                          struct audio_port *port);
+
+    /* Set audio port configuration */
+    int (*set_audio_port_config)(struct audio_hw_device *dev,
+                         const struct audio_port_config *config);
+
 };
 typedef struct audio_hw_device audio_hw_device_t;