+ *
+ * @stream: the usb data stream.
+ */
+struct dvb_usb_adapter {
+ struct dvb_usb_device *dev;
+ struct dvb_usb_adapter_properties props;
+
+#define DVB_USB_ADAP_STATE_INIT 0x000
+#define DVB_USB_ADAP_STATE_DVB 0x001
+ int state;
+
+ u8 id;
+
+ int feedcount;
+ int pid_filtering;
+
+ /* tuner programming information */
+ u8 pll_addr;
+ u8 pll_init[4];
+ struct dvb_pll_desc *pll_desc;
+ int (*tuner_pass_ctrl) (struct dvb_frontend *, int, u8);
+
+ /* dvb */
+ struct dvb_adapter dvb_adap;
+ struct dmxdev dmxdev;
+ struct dvb_demux demux;
+ struct dvb_net dvb_net;
+ struct dvb_frontend *fe;
+ int max_feed_count;
+
+ int (*fe_init) (struct dvb_frontend *);
+ int (*fe_sleep) (struct dvb_frontend *);
+
+ struct usb_data_stream stream;
+
+ void *priv;
+};
+
+/**
+ * struct dvb_usb_device - object of a DVB USB device
+ * @props: copy of the struct dvb_usb_properties this device belongs to.
+ * @desc: pointer to the device's struct dvb_usb_device_description.
+ * @state: initialization and runtime state of the device.
+ *
+ * @powered: indicated whether the device is power or not.
+ * Powered is in/decremented for each call to modify the state.
+ * @udev: pointer to the device's struct usb_device.
+ *
+ * @usb_mutex: semaphore of USB control messages (reading needs two messages)
+ * @i2c_mutex: semaphore for i2c-transfers
+ *
+ * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
+ *