[deliverable/linux.git] / drivers / media / dvb / dvb-usb / dvb-usb.h

/* dvb-usb.h is part of the DVB USB library.
 *
 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
 * see dvb-usb-init.c for copyright information.
 *
 * the headerfile, all dvb-usb-drivers have to include.
 */
#ifndef __DVB_USB_H__
#define __DVB_USB_H__

#include <linux/config.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/usb.h>

#include "dvb_frontend.h"
#include "dvb_demux.h"
#include "dvb_net.h"
#include "dmxdev.h"

#include "dvb-pll.h"

#include "dvb-usb-ids.h"

/* debug */
#ifdef CONFIG_DVB_USB_DEBUG
#define dprintk(var,level,args...) \
	    do { if ((var & level)) { printk(args); } } while (0)

#define debug_dump(b,l,func) {\
	int loop_; \
	for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \
	func("\n");\
}
#define DVB_USB_DEBUG_STATUS
#else
#define dprintk(args...)
#define debug_dump(b,l,func)

#define DVB_USB_DEBUG_STATUS " (debugging is not enabled)"

#endif

/* generic log methods - taken from usb.h */
#ifndef DVB_USB_LOG_PREFIX
 #define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)"
#endif

#undef err
#define err(format, arg...)  printk(KERN_ERR     DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
#undef info
#define info(format, arg...) printk(KERN_INFO    DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
#undef warn
#define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)

/**
 * struct dvb_usb_device_description - name and its according USB IDs
 * @name: real name of the box, regardless which DVB USB device class is in use
 * @cold_ids: array of struct usb_device_id which describe the device in
 *  pre-firmware state
 * @warm_ids: array of struct usb_device_id which describe the device in
 *  post-firmware state
 *
 * Each DVB USB device class can have one or more actual devices, this struct
 * assigns a name to it.
 */
struct dvb_usb_device_description {
	const char *name;

#define DVB_USB_ID_MAX_NUM 15
	struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
	struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
};

/**
 * struct dvb_usb_rc_key - a remote control key and its input-event
 * @custom: the vendor/custom part of the key
 * @data: the actual key part
 * @event: the input event assigned to key identified by custom and data
 */
struct dvb_usb_rc_key {
	u8 custom,data;
	u32 event;
};

struct dvb_usb_device;

/**
 * struct dvb_usb_properties - properties of a dvb-usb-device
 * @caps: capabilites of the DVB USB device.
 * @pid_filter_count: number of PID filter position in the optional hardware
 *  PID-filter.
 *
 * @usb_ctrl: which USB device-side controller is in use. Needed for firmware
 *  download.
 * @firmware: name of the firmware file.
 *
 * @size_of_priv: how many bytes shall be allocated for the private field
 *  of struct dvb_usb_device.
 *
 * @power_ctrl: called to enable/disable power of the device.
 * @streaming_crtl: called to start and stop the MPEG2-TS streaming of the
 *  device (not URB submitting/killing).
 * @pid_filter_ctrl: called to en/disable the PID filter, if any.
 * @pid_filter: called to set/unset a PID for filtering.
 *
 * @read_mac_address: called to read the MAC address of the device.
 *
 * @frontend_attach: called to attach the possible frontends (fill fe-field
 *  of struct dvb_usb_device).
 * @tuner_attach: called to attach the correct tuner and to fill pll_addr,
 *  pll_desc and pll_init_buf of struct dvb_usb_device).
 * @identify_state: called to determine the state (cold or warm), when it
 *  is not distinguishable by the USB IDs.
 *
 * @rc_key_map: a hard-wired array of struct dvb_usb_rc_key (NULL to disable
 *  remote control handling).
 * @rc_key_map_size: number of items in @rc_key_map.
 * @rc_query: called to query an event event.
 * @rc_interval: time in ms between two queries.
 *
 * @i2c_algo: i2c_algorithm if the device has I2CoverUSB.
 *
 * @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic
 *  endpoint which received control messages with bulk transfers. When this
 *  is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
 *  helper functions.
 *
 * @urb: describes the kind of USB transfer used for MPEG2-TS-streaming.
 *  (BULK or ISOC)
 *
 * @num_device_descs: number of struct dvb_usb_device_description in @devices
 * @devices: array of struct dvb_usb_device_description compatibles with these
 *  properties.
 */
struct dvb_usb_properties {

#define DVB_USB_HAS_PID_FILTER               0x01
#define DVB_USB_PID_FILTER_CAN_BE_TURNED_OFF 0x02
#define DVB_USB_NEED_PID_FILTERING           0x04
#define DVB_USB_IS_AN_I2C_ADAPTER            0x08
	int caps;
	int pid_filter_count;

#define CYPRESS_AN2135  0
#define CYPRESS_AN2235  1
#define CYPRESS_FX2     2
	int usb_ctrl;
	const char *firmware;

	int size_of_priv;

	int (*power_ctrl) (struct dvb_usb_device *, int);
	int (*streaming_ctrl) (struct dvb_usb_device *, int);
	int (*pid_filter_ctrl) (struct dvb_usb_device *, int);
	int (*pid_filter) (struct dvb_usb_device *, int, u16, int);

	int (*read_mac_address) (struct dvb_usb_device *, u8 []);
	int (*frontend_attach) (struct dvb_usb_device *);
	int (*tuner_attach) (struct dvb_usb_device *);

	int (*identify_state) (struct usb_device *, struct dvb_usb_properties *,
			struct dvb_usb_device_description **, int *);

/* remote control properties */
#define REMOTE_NO_KEY_PRESSED      0x00
#define REMOTE_KEY_PRESSED         0x01
#define REMOTE_KEY_REPEAT          0x02
	struct dvb_usb_rc_key *rc_key_map;
	int rc_key_map_size;
	int (*rc_query) (struct dvb_usb_device *, u32 *, int *);
	int rc_interval;

	struct i2c_algorithm *i2c_algo;

	int generic_bulk_ctrl_endpoint;

	struct {
#define DVB_USB_BULK  1
#define DVB_USB_ISOC  2
		int type;
		int count;
		int endpoint;

		union {
			struct {
				int buffersize; /* per URB */
			} bulk;
			struct {
				int framesperurb;
				int framesize;
				int interval;
			} isoc;
		} u;
	} urb;

	int num_device_descs;
	struct dvb_usb_device_description devices[9];
};


/**
 * 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.
 *
 * @udev: pointer to the device's struct usb_device.
 * @urb_list: array of dynamically allocated struct urb for the MPEG2-TS-
 *  streaming.
 *
 * @buf_num: number of buffer allocated.
 * @buf_size: size of each buffer in buf_list.
 * @buf_list: array containing all allocate buffers for streaming.
 * @dma_addr: list of dma_addr_t for each buffer in buf_list.
 *
 * @urbs_initialized: number of URBs initialized.
 * @urbs_submitted: number of URBs submitted.
 *
 * @feedcount: number of reqested feeds (used for streaming-activation)
 * @pid_filtering: is hardware pid_filtering used or not.
 *
 * @usb_sem: semaphore of USB control messages (reading needs two messages)
 * @i2c_sem: semaphore for i2c-transfers
 *
 * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
 * @pll_addr: I2C address of the tuner for programming
 * @pll_init: array containing the initialization buffer
 * @pll_desc: pointer to the appropriate struct dvb_pll_desc
 *
 * @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod or the board
 *
 * @dvb_adap: device's dvb_adapter.
 * @dmxdev: device's dmxdev.
 * @demux: device's software demuxer.
 * @dvb_net: device's dvb_net interfaces.
 * @dvb_frontend: device's frontend.
 * @max_feed_count: how many feeds can be handled simultaneously by this
 *  device
 * @fe_sleep: rerouted frontend-sleep function.
 * @fe_init: rerouted frontend-init (wakeup) function.
 * @rc_input_dev: input device for the remote control.
 * @rc_query_work: struct work_struct frequent rc queries
 * @last_event: last triggered event
 * @last_state: last state (no, pressed, repeat)
 * @owner: owner of the dvb_adapter
 * @priv: private data of the actual driver (allocate by dvb-usb, size defined
 *  in size_of_priv of dvb_usb_properties).
 */
struct dvb_usb_device {
	struct dvb_usb_properties props;
	struct dvb_usb_device_description *desc;

#define DVB_USB_STATE_INIT        0x000
#define DVB_USB_STATE_URB_LIST    0x001
#define DVB_USB_STATE_URB_BUF     0x002
#define DVB_USB_STATE_DVB         0x004
#define DVB_USB_STATE_I2C         0x008
#define DVB_USB_STATE_REMOTE      0x010
#define DVB_USB_STATE_URB_SUBMIT  0x020
	int state;

	/* usb */
	struct usb_device *udev;
	struct urb **urb_list;

	int buf_num;
	unsigned long buf_size;
	u8 **buf_list;
	dma_addr_t *dma_addr;

	int urbs_initialized;
	int urbs_submitted;

	int feedcount;
	int pid_filtering;

	/* locking */
	struct semaphore usb_sem;

	/* i2c */
	struct semaphore i2c_sem;
	struct i2c_adapter i2c_adap;

	/* 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_sleep) (struct dvb_frontend *);
	int (*fe_init)  (struct dvb_frontend *);

	/* remote control */
	struct input_dev *rc_input_dev;
	char rc_phys[64];
	struct work_struct rc_query_work;
	u32 last_event;
	int last_state;

	struct module *owner;

	void *priv;
};

extern int dvb_usb_device_init(struct usb_interface *, struct dvb_usb_properties *, struct module *, struct dvb_usb_device **);
extern void dvb_usb_device_exit(struct usb_interface *);

/* the generic read/write method for device control */
extern int dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16,int);
extern int dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);

/* commonly used remote control parsing */
extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);

/* commonly used pll init and set functions */
extern int dvb_usb_pll_init_i2c(struct dvb_frontend *);
extern int dvb_usb_pll_set(struct dvb_frontend *, struct dvb_frontend_parameters *, u8[]);
extern int dvb_usb_pll_set_i2c(struct dvb_frontend *, struct dvb_frontend_parameters *);


#endif
Commit	Line	Data
776338e1 JS	1	/* dvb-usb.h is part of the DVB USB library.
	2	*
	3	* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
	4	* see dvb-usb-init.c for copyright information.
	5	*
	6	* the headerfile, all dvb-usb-drivers have to include.
	7	*/
	8	#ifndef __DVB_USB_H__
	9	#define __DVB_USB_H__
	10
	11	#include <linux/config.h>
	12	#include <linux/input.h>
	13	#include <linux/module.h>
	14	#include <linux/usb.h>
	15
	16	#include "dvb_frontend.h"
	17	#include "dvb_demux.h"
	18	#include "dvb_net.h"
	19	#include "dmxdev.h"
	20
	21	#include "dvb-pll.h"
	22
	23	#include "dvb-usb-ids.h"
	24
	25	/* debug */
	26	#ifdef CONFIG_DVB_USB_DEBUG
	27	#define dprintk(var,level,args...) \
	28	do { if ((var & level)) { printk(args); } } while (0)
	29
	30	#define debug_dump(b,l,func) {\
	31	int loop_; \
	32	for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \
	33	func("\n");\
	34	}
	35	#define DVB_USB_DEBUG_STATUS
	36	#else
	37	#define dprintk(args...)
	38	#define debug_dump(b,l,func)
	39
	40	#define DVB_USB_DEBUG_STATUS " (debugging is not enabled)"
	41
	42	#endif
	43
	44	/* generic log methods - taken from usb.h */
	45	#ifndef DVB_USB_LOG_PREFIX
	46	#define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)"
	47	#endif
	48
	49	#undef err
	50	#define err(format, arg...) printk(KERN_ERR DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
	51	#undef info
	52	#define info(format, arg...) printk(KERN_INFO DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
	53	#undef warn
	54	#define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
	55
	56	/**
	57	* struct dvb_usb_device_description - name and its according USB IDs
	58	* @name: real name of the box, regardless which DVB USB device class is in use
	59	* @cold_ids: array of struct usb_device_id which describe the device in
	60	* pre-firmware state
	61	* @warm_ids: array of struct usb_device_id which describe the device in
	62	* post-firmware state
	63	*
	64	* Each DVB USB device class can have one or more actual devices, this struct
65	* assigns a name to it.
66	*/
67	struct dvb_usb_device_description {
68	const char *name;
69
70	#define DVB_USB_ID_MAX_NUM 15
71	struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
72	struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
73	};
74
75	/**
76	* struct dvb_usb_rc_key - a remote control key and its input-event
77	* @custom: the vendor/custom part of the key
78	* @data: the actual key part
79	* @event: the input event assigned to key identified by custom and data
80	*/
81	struct dvb_usb_rc_key {
82	u8 custom,data;
83	u32 event;
84	};
85
86	struct dvb_usb_device;
87
88	/**
89	* struct dvb_usb_properties - properties of a dvb-usb-device
90	* @caps: capabilites of the DVB USB device.
91	* @pid_filter_count: number of PID filter position in the optional hardware
92	* PID-filter.
93	*
94	* @usb_ctrl: which USB device-side controller is in use. Needed for firmware
95	* download.
96	* @firmware: name of the firmware file.
97	*
98	* @size_of_priv: how many bytes shall be allocated for the private field
99	* of struct dvb_usb_device.
100	*
101	* @power_ctrl: called to enable/disable power of the device.
102	* @streaming_crtl: called to start and stop the MPEG2-TS streaming of the
103	* device (not URB submitting/killing).
104	* @pid_filter_ctrl: called to en/disable the PID filter, if any.
105	* @pid_filter: called to set/unset a PID for filtering.
106	*
107	* @read_mac_address: called to read the MAC address of the device.
108	*
109	* @frontend_attach: called to attach the possible frontends (fill fe-field
110	* of struct dvb_usb_device).
111	* @tuner_attach: called to attach the correct tuner and to fill pll_addr,
112	* pll_desc and pll_init_buf of struct dvb_usb_device).
113	* @identify_state: called to determine the state (cold or warm), when it
114	* is not distinguishable by the USB IDs.
115	*
116	* @rc_key_map: a hard-wired array of struct dvb_usb_rc_key (NULL to disable
117	* remote control handling).
118	* @rc_key_map_size: number of items in @rc_key_map.
119	* @rc_query: called to query an event event.
120	* @rc_interval: time in ms between two queries.
121	*
122	* @i2c_algo: i2c_algorithm if the device has I2CoverUSB.
123	*
124	* @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic
125	* endpoint which received control messages with bulk transfers. When this
126	* is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
127	* helper functions.
128	*
129	* @urb: describes the kind of USB transfer used for MPEG2-TS-streaming.
47dc3d68	130	* (BULK or ISOC)
776338e1 JS	131	*
	132	* @num_device_descs: number of struct dvb_usb_device_description in @devices
	133	* @devices: array of struct dvb_usb_device_description compatibles with these
	134	* properties.
	135	*/
	136	struct dvb_usb_properties {
	137
	138	#define DVB_USB_HAS_PID_FILTER 0x01
	139	#define DVB_USB_PID_FILTER_CAN_BE_TURNED_OFF 0x02
	140	#define DVB_USB_NEED_PID_FILTERING 0x04
	141	#define DVB_USB_IS_AN_I2C_ADAPTER 0x08
	142	int caps;
	143	int pid_filter_count;
	144
	145	#define CYPRESS_AN2135 0
	146	#define CYPRESS_AN2235 1
	147	#define CYPRESS_FX2 2
	148	int usb_ctrl;
	149	const char *firmware;
	150
	151	int size_of_priv;
	152
	153	int (power_ctrl) (struct dvb_usb_device , int);
	154	int (streaming_ctrl) (struct dvb_usb_device , int);
	155	int (pid_filter_ctrl) (struct dvb_usb_device , int);
	156	int (pid_filter) (struct dvb_usb_device , int, u16, int);
	157
	158	int (read_mac_address) (struct dvb_usb_device , u8 []);
	159	int (frontend_attach) (struct dvb_usb_device );
	160	int (tuner_attach) (struct dvb_usb_device );
	161
	162	int (identify_state) (struct usb_device , struct dvb_usb_properties *,
	163	struct dvb_usb_device_description *, int );
	164
	165	/* remote control properties */
	166	#define REMOTE_NO_KEY_PRESSED 0x00
	167	#define REMOTE_KEY_PRESSED 0x01
	168	#define REMOTE_KEY_REPEAT 0x02
	169	struct dvb_usb_rc_key *rc_key_map;
	170	int rc_key_map_size;
	171	int (rc_query) (struct dvb_usb_device , u32 , int );
	172	int rc_interval;
	173
	174	struct i2c_algorithm *i2c_algo;
	175
	176	int generic_bulk_ctrl_endpoint;
	177
	178	struct {
	179	#define DVB_USB_BULK 1
	180	#define DVB_USB_ISOC 2
	181	int type;
	182	int count;
	183	int endpoint;
	184
	185	union {
	186	struct {
	187	int buffersize; /* per URB */
	188	} bulk;
	189	struct {
	190	int framesperurb;
	191	int framesize;
7f5fee57	192	int interval;
776338e1 JS	193	} isoc;
	194	} u;
	195	} urb;
	196
	197	int num_device_descs;
2f7f96b9	198	struct dvb_usb_device_description devices[9];
776338e1 JS	199	};
	200
	201
	202	/**
	203	* struct dvb_usb_device - object of a DVB USB device
	204	* @props: copy of the struct dvb_usb_properties this device belongs to.
	205	* @desc: pointer to the device's struct dvb_usb_device_description.
	206	* @state: initialization and runtime state of the device.
	207	*
	208	* @udev: pointer to the device's struct usb_device.
	209	* @urb_list: array of dynamically allocated struct urb for the MPEG2-TS-
	210	* streaming.
7f5fee57 PB	211	*
	212	* @buf_num: number of buffer allocated.
	213	* @buf_size: size of each buffer in buf_list.
	214	* @buf_list: array containing all allocate buffers for streaming.
	215	* @dma_addr: list of dma_addr_t for each buffer in buf_list.
	216	*
776338e1 JS	217	* @urbs_initialized: number of URBs initialized.
776338e1 JS	218	* @urbs_submitted: number of URBs submitted.
7f5fee57	219	*
776338e1 JS	220	* @feedcount: number of reqested feeds (used for streaming-activation)
776338e1 JS	221	* @pid_filtering: is hardware pid_filtering used or not.
7f5fee57	222	*
776338e1 JS	223	* @usb_sem: semaphore of USB control messages (reading needs two messages)
776338e1 JS	224	* @i2c_sem: semaphore for i2c-transfers
7f5fee57	225	*
776338e1 JS	226	* @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
	227	* @pll_addr: I2C address of the tuner for programming
	228	* @pll_init: array containing the initialization buffer
	229	* @pll_desc: pointer to the appropriate struct dvb_pll_desc
7f5fee57 PB	230	*
	231	* @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod or the board
	232	*
776338e1 JS	233	* @dvb_adap: device's dvb_adapter.
	234	* @dmxdev: device's dmxdev.
	235	* @demux: device's software demuxer.
	236	* @dvb_net: device's dvb_net interfaces.
	237	* @dvb_frontend: device's frontend.
	238	* @max_feed_count: how many feeds can be handled simultaneously by this
	239	* device
	240	* @fe_sleep: rerouted frontend-sleep function.
	241	* @fe_init: rerouted frontend-init (wakeup) function.
	242	* @rc_input_dev: input device for the remote control.
	243	* @rc_query_work: struct work_struct frequent rc queries
	244	* @last_event: last triggered event
	245	* @last_state: last state (no, pressed, repeat)
	246	* @owner: owner of the dvb_adapter
	247	* @priv: private data of the actual driver (allocate by dvb-usb, size defined
	248	* in size_of_priv of dvb_usb_properties).
	249	*/
	250	struct dvb_usb_device {
	251	struct dvb_usb_properties props;
	252	struct dvb_usb_device_description *desc;
	253
	254	#define DVB_USB_STATE_INIT 0x000
	255	#define DVB_USB_STATE_URB_LIST 0x001
	256	#define DVB_USB_STATE_URB_BUF 0x002
	257	#define DVB_USB_STATE_DVB 0x004
	258	#define DVB_USB_STATE_I2C 0x008
	259	#define DVB_USB_STATE_REMOTE 0x010
	260	#define DVB_USB_STATE_URB_SUBMIT 0x020
	261	int state;
	262
	263	/* usb */
	264	struct usb_device *udev;
	265	struct urb **urb_list;
7f5fee57 PB	266
	267	int buf_num;
	268	unsigned long buf_size;
	269	u8 **buf_list;
	270	dma_addr_t *dma_addr;
	271
776338e1 JS	272	int urbs_initialized;
	273	int urbs_submitted;
	274
	275	int feedcount;
	276	int pid_filtering;
	277
	278	/* locking */
	279	struct semaphore usb_sem;
	280
	281	/* i2c */
	282	struct semaphore i2c_sem;
	283	struct i2c_adapter i2c_adap;
	284
	285	/* tuner programming information */
	286	u8 pll_addr;
	287	u8 pll_init[4];
	288	struct dvb_pll_desc *pll_desc;
	289	int (tuner_pass_ctrl)(struct dvb_frontend , int, u8);
	290
	291	/* dvb */
	292	struct dvb_adapter dvb_adap;
	293	struct dmxdev dmxdev;
	294	struct dvb_demux demux;
	295	struct dvb_net dvb_net;
	296	struct dvb_frontend* fe;
	297	int max_feed_count;
	298
	299	int (fe_sleep) (struct dvb_frontend );
	300	int (fe_init) (struct dvb_frontend );
	301
	302	/* remote control */
b7df3910 DT	303	struct input_dev *rc_input_dev;
b7df3910 DT	304	char rc_phys[64];
776338e1 JS	305	struct work_struct rc_query_work;
	306	u32 last_event;
	307	int last_state;
	308
	309	struct module *owner;
	310
	311	void *priv;
	312	};
	313
47dc3d68	314	extern int dvb_usb_device_init(struct usb_interface , struct dvb_usb_properties , struct module , struct dvb_usb_device *);
776338e1 JS	315	extern void dvb_usb_device_exit(struct usb_interface *);
	316
	317	/* the generic read/write method for device control */
	318	extern int dvb_usb_generic_rw(struct dvb_usb_device , u8 , u16, u8 *, u16,int);
	319	extern int dvb_usb_generic_write(struct dvb_usb_device , u8 , u16);
	320
	321	/* commonly used remote control parsing */
	322	extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device , u8[], u32 , int *);
	323
	324	/* commonly used pll init and set functions */
	325	extern int dvb_usb_pll_init_i2c(struct dvb_frontend *);
	326	extern int dvb_usb_pll_set(struct dvb_frontend , struct dvb_frontend_parameters , u8[]);
	327	extern int dvb_usb_pll_set_i2c(struct dvb_frontend , struct dvb_frontend_parameters );
	328
	329
	330	#endif