/* SPDX-License-Identifier: GPL-2.0 */
/* 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 <media/dvb_frontend.h>
#include <media/dvb_demux.h>
#include <media/dvb_net.h>
#include <media/dmxdev.h>
#include "dvb-pll.h"
#include <media/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(var, level, args...) no_printk(args)
#define debug_dump(b, l, func) do { } while (0 )
#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
const struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
const 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 ) & 0 xff;
}
static inline u8 rc5_data(struct rc_map_table *key)
{
return key->scancode & 0 xff;
}
static inline u16 rc5_scan(struct rc_map_table *key)
{
return key->scancode & 0 xffff;
}
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_fe_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 .
* @ streaming_ctrl : called to start and stop the MPEG2 - TS streaming of the
* device ( not URB submitting / killing ) .
* This callback will be called without data URBs being active - data URBs
* will be submitted only after streaming_ctrl ( 1 ) returns successfully and
* they will be killed before streaming_ctrl ( 0 ) gets called .
* @ 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
* @ size_of_priv : size of the priv memory in struct dvb_usb_adapter
*/
struct dvb_usb_adapter_fe_properties {
#define DVB_USB_ADAP_HAS_PID_FILTER 0 x01
#define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0 x02
#define DVB_USB_ADAP_NEED_PID_FILTERING 0 x04
#define DVB_USB_ADAP_RECEIVES_204_BYTE_TS 0 x08
#define DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD 0 x10
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 0 x00
#define REMOTE_KEY_PRESSED 0 x01
#define REMOTE_KEY_REPEAT 0 x02
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
* @ module_name : module name
* @ 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 )
* @ scancode_mask : scancode mask
*/
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_proto);
char *module_name;
int (*rc_query) (struct dvb_usb_device *d);
int rc_interval;
bool bulk_mode; /* uses bulk mode */
u32 scancode_mask;
};
/**
* 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 .
*
* @ DVB_RC_LEGACY : legacy driver
* @ DVB_RC_CORE : rc - core driver
*/
enum dvb_usb_mode {
DVB_RC_LEGACY,
DVB_RC_CORE,
};
/**
* struct dvb_usb_device_properties - properties of a dvb - usb - device
* @ caps : capabilities
* @ 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 .
* @ priv_init : optional callback to initialize the variable that private field
* of struct dvb_usb_device has pointer to just after it had been allocated and
* zeroed .
* @ priv_destroy : just like priv_init , only called before deallocating
* the memory pointed by private field of struct dvb_usb_device .
*
* @ num_adapters : the number of adapters in @ adapters
* @ adapter : the adapters
* @ 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 .
*/
struct dvb_usb_device_properties {
#define MAX_NO_OF_ADAPTER_PER_DEVICE 2
#define DVB_USB_IS_AN_I2C_ADAPTER 0 x01
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 (*priv_init)(struct dvb_usb_device *);
void (*priv_destroy)(struct dvb_usb_device *);
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 *udev,
const struct dvb_usb_device_properties *props,
const struct dvb_usb_device_description **desc,
int *cold);
struct {
enum dvb_usb_mode mode; /* Drivers shouldn't touch on it */
struct dvb_rc_legacy legacy;
struct dvb_rc core;
} rc;
const 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
* @ udev : the USB device
* @ props : data stream properties
* @ state : state of the stream
* @ complete : complete callback
* @ urb_list : list of URBs
* @ 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 .
* @ user_priv : for private use .
*/
struct usb_data_stream {
#define MAX_NO_URBS_FOR_DATA_STREAM 10
struct usb_device *udev;
struct usb_data_stream_properties props;
#define USB_STATE_INIT 0 x00
#define USB_STATE_URB_BUF 0 x01
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_fe_adapter - a DVB adapter on a USB device
* @ fe : frontend
* @ fe_init : rerouted frontend - init ( wakeup ) function .
* @ fe_sleep : rerouted frontend - sleep function .
* @ stream : the usb data stream .
* @ pid_filtering : is hardware pid_filtering used or not .
* @ max_feed_count : how many feeds can be handled simultaneously by this
* device
* @ priv : private pointer
*/
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 - a DVB adapter on a USB device
* @ dev : DVB USB device pointer
* @ props : properties
* @ state : status
* @ id : index of this adapter ( starting with 0 ) .
*
* @ feedcount : number of requested feeds ( used for streaming - activation )
*
* @ dvb_adap : device ' s dvb_adapter .
* @ dmxdev : device ' s dmxdev .
* @ demux : device ' s software demuxer .
* @ dvb_net : device ' s dvb_net interfaces .
*
* @ fe_adap : frontend adapters
* @ active_fe : active frontend
* @ num_frontends_initialized : number of initialized frontends
* @ priv : private pointer
*/
struct dvb_usb_adapter {
struct dvb_usb_device *dev;
struct dvb_usb_adapter_properties props;
#define DVB_USB_ADAP_STATE_INIT 0 x000
#define DVB_USB_ADAP_STATE_DVB 0 x001
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 .
*
* @ data_mutex : mutex to protect the data structure used to store URB data
* @ usb_mutex : mutex of USB control messages ( reading needs two messages ) .
* Please notice that this mutex is used internally at the generic
* URB control functions . So , drivers using dvb_usb_generic_rw ( ) and
* derivated functions should not lock it internally .
* @ i2c_mutex : mutex for i2c - transfers
*
* @ i2c_adap : device ' s i2c_adapter if it uses I2CoverUSB
*
* @ num_adapters_initialized : number of initialized adapters
* @ adapter : adapters
*
* @ rc_dev : rc device for the remote control ( rc - core mode )
* @ input_dev : input device for the remote control ( legacy mode )
* @ rc_phys : rc device path
* @ 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;
const struct dvb_usb_device_description *desc;
struct usb_device *udev;
#define DVB_USB_STATE_INIT 0 x000
#define DVB_USB_STATE_I2C 0 x001
#define DVB_USB_STATE_DVB 0 x002
#define DVB_USB_STATE_REMOTE 0 x004
int state;
int powered;
/* locking */
struct mutex data_mutex;
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 *,
const 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 __must_check
dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16, int );
extern int __must_check
dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
/* commonly used remote control parsing */
int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d, u8 keybuf[5 ],
u32 *event, int *state);
/* 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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