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Release 4.7 drivers/media/usb/dvb-usb/dvb-usb.h

Directory: drivers/media/usb/dvb-usb
/* dvb-usb.h is part of the DVB USB library.
 *
 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)
 * see dvb-usb-init.c for copyright information.
 *
 * the headerfile, all dvb-usb-drivers have to include.
 *
 * TODO: clean-up the structures for unused fields and update the comments
 */
#ifndef __DVB_USB_H__

#define __DVB_USB_H__

#include <linux/input.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include <linux/mutex.h>
#include <media/rc-core.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];
};




static inline u8 rc5_custom(struct rc_map_table *key)
{
	return (key->scancode >> 8) & 0xff;
}


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static inline u8 rc5_data(struct rc_map_table *key)
{
	return key->scancode & 0xff;
}


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static inline u16 rc5_scan(struct rc_map_table *key)
{
	return key->scancode & 0xffff;
}


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struct dvb_usb_device;
struct dvb_usb_adapter;
struct usb_data_stream;

/**
 * Properties of USB streaming - TODO this structure should be somewhere else
 * describes the kind of USB transfer used for data-streaming.
 *  (BULK or ISOC)
 */

struct usb_data_stream_properties {

#define USB_BULK  1

#define 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;
};

/**
 * struct dvb_usb_adapter_properties - properties of a dvb-usb-adapter.
 *    A DVB-USB-Adapter is basically a dvb_adapter which is present on a USB-device.
 * @caps: capabilities of the DVB USB device.
 * @pid_filter_count: number of PID filter position in the optional hardware
 *  PID-filter.
 * @num_frontends: number of frontends of the DVB USB adapter.
 * @frontend_ctrl: called to power on/off active frontend.
 * @streaming_ctrl: 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.
 * @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).
 * @stream: configuration of the USB streaming
 */

struct dvb_usb_adapter_fe_properties {

#define DVB_USB_ADAP_HAS_PID_FILTER               0x01

#define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0x02

#define DVB_USB_ADAP_NEED_PID_FILTERING           0x04

#define DVB_USB_ADAP_RECEIVES_204_BYTE_TS         0x08

#define DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD         0x10
	
int caps;
	
int pid_filter_count;

	
int (*streaming_ctrl)  (struct dvb_usb_adapter *, int);
	
int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int);
	
int (*pid_filter)      (struct dvb_usb_adapter *, int, u16, int);

	
int (*frontend_attach) (struct dvb_usb_adapter *);
	
int (*tuner_attach)    (struct dvb_usb_adapter *);

	
struct usb_data_stream_properties stream;

	
int size_of_priv;
};


#define MAX_NO_OF_FE_PER_ADAP 3

struct dvb_usb_adapter_properties {
	
int size_of_priv;

	
int (*frontend_ctrl)   (struct dvb_frontend *, int);

	
int num_frontends;
	
struct dvb_usb_adapter_fe_properties fe[MAX_NO_OF_FE_PER_ADAP];
};

/**
 * struct dvb_rc_legacy - old properties of remote controller
 * @rc_map_table: a hard-wired array of struct rc_map_table (NULL to disable
 *  remote control handling).
 * @rc_map_size: number of items in @rc_map_table.
 * @rc_query: called to query an event event.
 * @rc_interval: time in ms between two queries.
 */

struct dvb_rc_legacy {
/* remote control properties */

#define REMOTE_NO_KEY_PRESSED      0x00

#define REMOTE_KEY_PRESSED         0x01

#define REMOTE_KEY_REPEAT          0x02
	
struct rc_map_table  *rc_map_table;
	
int rc_map_size;
	
int (*rc_query) (struct dvb_usb_device *, u32 *, int *);
	
int rc_interval;
};

/**
 * struct dvb_rc properties of remote controller, using rc-core
 * @rc_codes: name of rc codes table
 * @protocol: type of protocol(s) currently used by the driver
 * @allowed_protos: protocol(s) supported by the driver
 * @driver_type: Used to point if a device supports raw mode
 * @change_protocol: callback to change protocol
 * @rc_query: called to query an event event.
 * @rc_interval: time in ms between two queries.
 * @bulk_mode: device supports bulk mode for RC (disable polling mode)
 */

struct dvb_rc {
	
char *rc_codes;
	
u64 protocol;
	
u64 allowed_protos;
	
enum rc_driver_type driver_type;
	
int (*change_protocol)(struct rc_dev *dev, u64 *rc_type);
	
char *module_name;
	
int (*rc_query) (struct dvb_usb_device *d);
	
int rc_interval;
	
bool bulk_mode;				/* uses bulk mode */
};

/**
 * enum dvb_usb_mode - Specifies if it is using a legacy driver or a new one
 *                     based on rc-core
 * This is initialized/used only inside dvb-usb-remote.c.
 * It shouldn't be set by the drivers.
 */

enum dvb_usb_mode {
	
DVB_RC_LEGACY,
	
DVB_RC_CORE,
};

/**
 * struct dvb_usb_device_properties - properties of a dvb-usb-device
 * @usb_ctrl: which USB device-side controller is in use. Needed for firmware
 *  download.
 * @firmware: name of the firmware file.
 * @download_firmware: called to download the firmware when the usb_ctrl is
 *  DEVICE_SPECIFIC.
 * @no_reconnect: device doesn't do a reconnect after downloading the firmware,
 *  so do the warm initialization right after it
 *
 * @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.
 * @read_mac_address: called to read the MAC address of the device.
 * @identify_state: called to determine the state (cold or warm), when it
 *  is not distinguishable by the USB IDs.
 *
 * @rc: remote controller properties
 *
 * @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.
 *
 * @generic_bulk_ctrl_endpoint_response: some DVB USB devices use a separate
 *  endpoint for responses to control messages sent with bulk transfers via
 *  the generic_bulk_ctrl_endpoint. When this is non-zero, this will be used
 *  instead of the generic_bulk_ctrl_endpoint when reading usb responses in
 *  the dvb_usb_generic_rw helper function.
 *
 * @num_device_descs: number of struct dvb_usb_device_description in @devices
 * @devices: array of struct dvb_usb_device_description compatibles with these
 *  properties.
 */

#define MAX_NO_OF_ADAPTER_PER_DEVICE 2

struct dvb_usb_device_properties {


#define DVB_USB_IS_AN_I2C_ADAPTER            0x01
	
int caps;


#define DEVICE_SPECIFIC 0

#define CYPRESS_AN2135  1

#define CYPRESS_AN2235  2

#define CYPRESS_FX2     3
	
int        usb_ctrl;
	
int        (*download_firmware) (struct usb_device *, const struct firmware *);
	
const char *firmware;
	
int        no_reconnect;

	
int size_of_priv;

	
int num_adapters;
	
struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];

	
int (*power_ctrl)       (struct dvb_usb_device *, int);
	
int (*read_mac_address) (struct dvb_usb_device *, u8 []);
	
int (*identify_state)   (struct usb_device *, struct dvb_usb_device_properties *,
			struct dvb_usb_device_description **, int *);

	struct {
		
enum dvb_usb_mode mode;	/* Drivers shouldn't touch on it */
		
struct dvb_rc_legacy legacy;
		
struct dvb_rc core;
	} 
rc;

	
struct i2c_algorithm *i2c_algo;

	
int generic_bulk_ctrl_endpoint;
	
int generic_bulk_ctrl_endpoint_response;

	
int num_device_descs;
	
struct dvb_usb_device_description devices[12];
};

/**
 * struct usb_data_stream - generic object of an USB stream
 * @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.
 */

#define MAX_NO_URBS_FOR_DATA_STREAM 10

struct usb_data_stream {
	
struct usb_device                 *udev;
	
struct usb_data_stream_properties  props;


#define USB_STATE_INIT    0x00

#define USB_STATE_URB_BUF 0x01
	
int state;

	
void (*complete) (struct usb_data_stream *, u8 *, size_t);

	
struct urb    *urb_list[MAX_NO_URBS_FOR_DATA_STREAM];
	
int            buf_num;
	
unsigned long  buf_size;
	
u8            *buf_list[MAX_NO_URBS_FOR_DATA_STREAM];
	
dma_addr_t     dma_addr[MAX_NO_URBS_FOR_DATA_STREAM];

	
int urbs_initialized;
	
int urbs_submitted;

	
void *user_priv;
};

/**
 * struct dvb_usb_adapter - a DVB adapter on a USB device
 * @id: index of this adapter (starting with 0).
 *
 * @feedcount: number of reqested feeds (used for streaming-activation)
 * @pid_filtering: is hardware pid_filtering used or not.
 *
 * @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_init:  rerouted frontend-init (wakeup) function.
 * @fe_sleep: rerouted frontend-sleep function.
 *
 * @stream: the usb data stream.
 */

struct dvb_usb_fe_adapter {
	
struct dvb_frontend *fe;

	
int (*fe_init)  (struct dvb_frontend *);
	
int (*fe_sleep) (struct dvb_frontend *);

	
struct usb_data_stream stream;

	
int pid_filtering;
	
int max_feed_count;

	
void *priv;
};


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;

	/* dvb */
	
struct dvb_adapter   dvb_adap;
	
struct dmxdev        dmxdev;
	
struct dvb_demux     demux;
	
struct dvb_net       dvb_net;

	
struct dvb_usb_fe_adapter fe_adap[MAX_NO_OF_FE_PER_ADAP];
	
int active_fe;
	
int num_frontends_initialized;

	
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
 *
 * @rc_dev: rc device for the remote control (rc-core mode)
 * @input_dev: input device for the remote control (legacy mode)
 * @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_device_properties props;
	
struct dvb_usb_device_description *desc;

	
struct usb_device *udev;


#define DVB_USB_STATE_INIT        0x000

#define DVB_USB_STATE_I2C         0x001

#define DVB_USB_STATE_DVB         0x002

#define DVB_USB_STATE_REMOTE      0x004
	
int state;

	
int powered;

	/* locking */
	
struct mutex usb_mutex;

	/* i2c */
	
struct mutex i2c_mutex;
	
struct i2c_adapter i2c_adap;

	
int                    num_adapters_initialized;
	
struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];

	/* remote control */
	
struct rc_dev *rc_dev;
	
struct input_dev *input_dev;
	
char rc_phys[64];
	
struct delayed_work 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_device_properties *,
			       struct module *, struct dvb_usb_device **,
			       short *adapter_nums);
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 firmware download types and function */

struct hexline {
	
u8 len;
	
u32 addr;
	
u8 type;
	
u8 data[255];
	
u8 chk;
};
extern int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type);
extern int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos);


#endif

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Directory: drivers/media/usb/dvb-usb



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