/* This is a helper function user to inform the user about possibility to write the data to the device.  */
static void audio_dc_sof(struct usb_cfg_data *cfg, struct usb_audio_dev_data *dev_data)
/* This is a helper function user to inform the user about possibility to write the data to the device.  */
static void audio_dc_sof(struct usb_cfg_data *cfg, struct usb_audio_dev_data *dev_data)
{
	uint8_t ep_addr;
	ep_addr = cfg->endpoint[0].ep_addr;
	if ((ep_addr & USB_EP_DIR_MASK) && (dev_data->tx_enable)) {
		if (dev_data->ops && dev_data->ops->data_request_cb) {
			dev_data->ops->data_request_cb(
				dev_data->common.dev);
		}
	}
}