int (*play)(struct udevice *dev, void *data, uint data_size);
/**
+ * stop_play() - Indicate that there is no more data coming
+ *
+ * This is called once play() has finished sending all the data to the
+ * output device. This may be used to tell the hardware to turn off the
+ * codec, for example.
+ *
+ * @dev: Sound device
+ * @return 0 if OK, -ve on error
+ */
+ int (*stop_play)(struct udevice *dev);
+
+ /**
* start_beep() - Start beeping (optional)
*
* This tells the sound hardware to start a beep. It will continue until