SYNOPSIS

struct dvb_device {
struct list_head list_head;
const struct file_operations * fops;
struct dvb_adapter * adapter;
int type;
int minor;
u32 id;
int readers;
int writers;
int users;
wait_queue_head_t wait_queue;
int (* kernel_ioctl) (struct file *file, unsigned int cmd, void *arg);
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
const char * name;
struct media_intf_devnode * intf_devnode;
unsigned tsout_num_entities;
struct media_entity * entity;
struct media_entity * tsout_entity;
struct media_pad * pads;
struct media_pad * tsout_pads;
#endif
void * priv;
};

MEMBERS

list_head

List head with all DVB devices

fops

pointer to struct file_operations

adapter

pointer to the adapter that holds this device node

type

type of the device: DVB_DEVICE_SEC, DVB_DEVICE_FRONTEND, DVB_DEVICE_DEMUX, DVB_DEVICE_DVR, DVB_DEVICE_CA, DVB_DEVICE_NET

minor

devnode minor number. Major number is always DVB_MAJOR.

id

device ID number, inside the adapter

readers

Initialized by the caller. Each call to open in Read Only mode decreases this counter by one.

writers

Initialized by the caller. Each call to open in Read/Write mode decreases this counter by one.

users

Initialized by the caller. Each call to open in any mode decreases this counter by one.

wait_queue

wait queue, used to wait for certain events inside one of the DVB API callers

kernel_ioctl

callback function used to handle ioctl calls from userspace.

name

Name to be used for the device at the Media Controller

intf_devnode

Pointer to media_intf_devnode. Used by the dvbdev core to store the MC device node interface

tsout_num_entities

Number of Transport Stream output entities

entity

pointer to struct media_entity associated with the device node

tsout_entity

array with MC entities associated to each TS output node

pads

pointer to struct media_pad associated with entity;

tsout_pads

array with the source pads for each tsout_entity

priv

private data

DESCRIPTION

This structure is used by the DVB core (frontend, CA, net, demux) in order to create the device nodes. Usually, driver should not initialize this struct diretly.

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