416 lines
12 KiB
C
416 lines
12 KiB
C
/* dvb-usb.h is part of the DVB USB library.
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*
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* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
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* see dvb-usb-init.c for copyright information.
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*
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* the headerfile, all dvb-usb-drivers have to include.
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*
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* TODO: clean-up the structures for unused fields and update the comments
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*/
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#ifndef __DVB_USB_H__
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#define __DVB_USB_H__
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#include <linux/input.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include <linux/mutex.h>
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#include "dvb_frontend.h"
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#include "dvb_demux.h"
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#include "dvb_net.h"
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#include "dmxdev.h"
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#include "dvb-pll.h"
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#include "dvb-usb-ids.h"
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/* debug */
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#ifdef CONFIG_DVB_USB_DEBUG
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#define dprintk(var,level,args...) \
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do { if ((var & level)) { printk(args); } } while (0)
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#define debug_dump(b,l,func) {\
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int loop_; \
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for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \
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func("\n");\
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}
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#define DVB_USB_DEBUG_STATUS
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#else
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#define dprintk(args...)
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#define debug_dump(b,l,func)
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#define DVB_USB_DEBUG_STATUS " (debugging is not enabled)"
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#endif
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/* generic log methods - taken from usb.h */
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#ifndef DVB_USB_LOG_PREFIX
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#define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)"
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#endif
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#undef err
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#define err(format, arg...) printk(KERN_ERR DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
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#undef info
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#define info(format, arg...) printk(KERN_INFO DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
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#undef warn
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#define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
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/**
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* struct dvb_usb_device_description - name and its according USB IDs
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* @name: real name of the box, regardless which DVB USB device class is in use
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* @cold_ids: array of struct usb_device_id which describe the device in
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* pre-firmware state
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* @warm_ids: array of struct usb_device_id which describe the device in
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* post-firmware state
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*
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* Each DVB USB device class can have one or more actual devices, this struct
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* assigns a name to it.
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*/
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struct dvb_usb_device_description {
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const char *name;
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#define DVB_USB_ID_MAX_NUM 15
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struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
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struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
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};
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/**
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* struct dvb_usb_rc_key - a remote control key and its input-event
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* @custom: the vendor/custom part of the key
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* @data: the actual key part
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* @event: the input event assigned to key identified by custom and data
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*/
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struct dvb_usb_rc_key {
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u16 scan;
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u32 event;
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};
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static inline u8 rc5_custom(struct dvb_usb_rc_key *key)
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{
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return (key->scan >> 8) & 0xff;
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}
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static inline u8 rc5_data(struct dvb_usb_rc_key *key)
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{
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return key->scan & 0xff;
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}
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static inline u8 rc5_scan(struct dvb_usb_rc_key *key)
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{
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return key->scan & 0xffff;
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}
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struct dvb_usb_device;
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struct dvb_usb_adapter;
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struct usb_data_stream;
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/**
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* Properties of USB streaming - TODO this structure should be somewhere else
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* describes the kind of USB transfer used for data-streaming.
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* (BULK or ISOC)
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*/
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struct usb_data_stream_properties {
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#define USB_BULK 1
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#define USB_ISOC 2
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int type;
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int count;
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int endpoint;
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union {
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struct {
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int buffersize; /* per URB */
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} bulk;
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struct {
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int framesperurb;
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int framesize;
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int interval;
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} isoc;
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} u;
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};
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/**
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* struct dvb_usb_adapter_properties - properties of a dvb-usb-adapter.
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* A DVB-USB-Adapter is basically a dvb_adapter which is present on a USB-device.
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* @caps: capabilities of the DVB USB device.
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* @pid_filter_count: number of PID filter position in the optional hardware
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* PID-filter.
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* @streaming_ctrl: called to start and stop the MPEG2-TS streaming of the
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* device (not URB submitting/killing).
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* @pid_filter_ctrl: called to en/disable the PID filter, if any.
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* @pid_filter: called to set/unset a PID for filtering.
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* @frontend_attach: called to attach the possible frontends (fill fe-field
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* of struct dvb_usb_device).
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* @tuner_attach: called to attach the correct tuner and to fill pll_addr,
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* pll_desc and pll_init_buf of struct dvb_usb_device).
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* @stream: configuration of the USB streaming
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*/
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struct dvb_usb_adapter_properties {
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#define DVB_USB_ADAP_HAS_PID_FILTER 0x01
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#define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0x02
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#define DVB_USB_ADAP_NEED_PID_FILTERING 0x04
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#define DVB_USB_ADAP_RECEIVES_204_BYTE_TS 0x08
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int caps;
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int pid_filter_count;
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int (*streaming_ctrl) (struct dvb_usb_adapter *, int);
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int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int);
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int (*pid_filter) (struct dvb_usb_adapter *, int, u16, int);
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int (*frontend_attach) (struct dvb_usb_adapter *);
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int (*tuner_attach) (struct dvb_usb_adapter *);
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struct usb_data_stream_properties stream;
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int size_of_priv;
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};
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/**
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* struct dvb_usb_device_properties - properties of a dvb-usb-device
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* @usb_ctrl: which USB device-side controller is in use. Needed for firmware
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* download.
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* @firmware: name of the firmware file.
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* @download_firmware: called to download the firmware when the usb_ctrl is
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* DEVICE_SPECIFIC.
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* @no_reconnect: device doesn't do a reconnect after downloading the firmware,
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* so do the warm initialization right after it
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*
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* @size_of_priv: how many bytes shall be allocated for the private field
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* of struct dvb_usb_device.
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*
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* @power_ctrl: called to enable/disable power of the device.
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* @read_mac_address: called to read the MAC address of the device.
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* @identify_state: called to determine the state (cold or warm), when it
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* is not distinguishable by the USB IDs.
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*
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* @rc_key_map: a hard-wired array of struct dvb_usb_rc_key (NULL to disable
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* remote control handling).
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* @rc_key_map_size: number of items in @rc_key_map.
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* @rc_query: called to query an event event.
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* @rc_interval: time in ms between two queries.
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*
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* @i2c_algo: i2c_algorithm if the device has I2CoverUSB.
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*
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* @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic
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* endpoint which received control messages with bulk transfers. When this
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* is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
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* helper functions.
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*
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* @num_device_descs: number of struct dvb_usb_device_description in @devices
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* @devices: array of struct dvb_usb_device_description compatibles with these
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* properties.
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*/
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#define MAX_NO_OF_ADAPTER_PER_DEVICE 2
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struct dvb_usb_device_properties {
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#define DVB_USB_IS_AN_I2C_ADAPTER 0x01
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int caps;
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#define DEVICE_SPECIFIC 0
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#define CYPRESS_AN2135 1
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#define CYPRESS_AN2235 2
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#define CYPRESS_FX2 3
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int usb_ctrl;
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int (*download_firmware) (struct usb_device *, const struct firmware *);
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const char *firmware;
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int no_reconnect;
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int size_of_priv;
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int num_adapters;
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struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
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int (*power_ctrl) (struct dvb_usb_device *, int);
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int (*read_mac_address) (struct dvb_usb_device *, u8 []);
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int (*identify_state) (struct usb_device *, struct dvb_usb_device_properties *,
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struct dvb_usb_device_description **, int *);
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/* remote control properties */
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#define REMOTE_NO_KEY_PRESSED 0x00
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#define REMOTE_KEY_PRESSED 0x01
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#define REMOTE_KEY_REPEAT 0x02
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struct dvb_usb_rc_key *rc_key_map;
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int rc_key_map_size;
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int (*rc_query) (struct dvb_usb_device *, u32 *, int *);
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int rc_interval;
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struct i2c_algorithm *i2c_algo;
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int generic_bulk_ctrl_endpoint;
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int num_device_descs;
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struct dvb_usb_device_description devices[12];
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};
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/**
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* struct usb_data_stream - generic object of an USB stream
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* @buf_num: number of buffer allocated.
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* @buf_size: size of each buffer in buf_list.
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* @buf_list: array containing all allocate buffers for streaming.
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* @dma_addr: list of dma_addr_t for each buffer in buf_list.
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*
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* @urbs_initialized: number of URBs initialized.
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* @urbs_submitted: number of URBs submitted.
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*/
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#define MAX_NO_URBS_FOR_DATA_STREAM 10
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struct usb_data_stream {
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struct usb_device *udev;
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struct usb_data_stream_properties props;
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#define USB_STATE_INIT 0x00
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#define USB_STATE_URB_BUF 0x01
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int state;
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void (*complete) (struct usb_data_stream *, u8 *, size_t);
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struct urb *urb_list[MAX_NO_URBS_FOR_DATA_STREAM];
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int buf_num;
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unsigned long buf_size;
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u8 *buf_list[MAX_NO_URBS_FOR_DATA_STREAM];
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dma_addr_t dma_addr[MAX_NO_URBS_FOR_DATA_STREAM];
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int urbs_initialized;
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int urbs_submitted;
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void *user_priv;
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};
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/**
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* struct dvb_usb_adapter - a DVB adapter on a USB device
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* @id: index of this adapter (starting with 0).
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*
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* @feedcount: number of reqested feeds (used for streaming-activation)
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* @pid_filtering: is hardware pid_filtering used or not.
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*
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* @pll_addr: I2C address of the tuner for programming
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* @pll_init: array containing the initialization buffer
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* @pll_desc: pointer to the appropriate struct dvb_pll_desc
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* @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod or the board
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*
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* @dvb_adap: device's dvb_adapter.
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* @dmxdev: device's dmxdev.
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* @demux: device's software demuxer.
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* @dvb_net: device's dvb_net interfaces.
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* @dvb_frontend: device's frontend.
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* @max_feed_count: how many feeds can be handled simultaneously by this
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* device
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*
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* @fe_init: rerouted frontend-init (wakeup) function.
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* @fe_sleep: rerouted frontend-sleep function.
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*
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* @stream: the usb data stream.
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*/
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struct dvb_usb_adapter {
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struct dvb_usb_device *dev;
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struct dvb_usb_adapter_properties props;
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#define DVB_USB_ADAP_STATE_INIT 0x000
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#define DVB_USB_ADAP_STATE_DVB 0x001
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int state;
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u8 id;
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int feedcount;
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int pid_filtering;
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/* dvb */
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struct dvb_adapter dvb_adap;
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struct dmxdev dmxdev;
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struct dvb_demux demux;
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struct dvb_net dvb_net;
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struct dvb_frontend *fe;
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int max_feed_count;
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int (*fe_init) (struct dvb_frontend *);
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int (*fe_sleep) (struct dvb_frontend *);
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struct usb_data_stream stream;
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void *priv;
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};
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/**
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* struct dvb_usb_device - object of a DVB USB device
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* @props: copy of the struct dvb_usb_properties this device belongs to.
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* @desc: pointer to the device's struct dvb_usb_device_description.
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* @state: initialization and runtime state of the device.
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*
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* @powered: indicated whether the device is power or not.
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* Powered is in/decremented for each call to modify the state.
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* @udev: pointer to the device's struct usb_device.
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*
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* @usb_mutex: semaphore of USB control messages (reading needs two messages)
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* @i2c_mutex: semaphore for i2c-transfers
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*
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* @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
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*
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* @rc_input_dev: input device for the remote control.
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* @rc_query_work: struct work_struct frequent rc queries
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* @last_event: last triggered event
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* @last_state: last state (no, pressed, repeat)
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* @owner: owner of the dvb_adapter
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* @priv: private data of the actual driver (allocate by dvb-usb, size defined
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* in size_of_priv of dvb_usb_properties).
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*/
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struct dvb_usb_device {
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struct dvb_usb_device_properties props;
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struct dvb_usb_device_description *desc;
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struct usb_device *udev;
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#define DVB_USB_STATE_INIT 0x000
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#define DVB_USB_STATE_I2C 0x001
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#define DVB_USB_STATE_DVB 0x002
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#define DVB_USB_STATE_REMOTE 0x004
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int state;
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int powered;
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/* locking */
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struct mutex usb_mutex;
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/* i2c */
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struct mutex i2c_mutex;
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struct i2c_adapter i2c_adap;
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int num_adapters_initialized;
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struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
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/* remote control */
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struct input_dev *rc_input_dev;
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char rc_phys[64];
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struct delayed_work rc_query_work;
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u32 last_event;
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int last_state;
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struct module *owner;
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void *priv;
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};
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extern int dvb_usb_device_init(struct usb_interface *,
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struct dvb_usb_device_properties *,
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struct module *, struct dvb_usb_device **,
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short *adapter_nums);
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extern void dvb_usb_device_exit(struct usb_interface *);
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/* the generic read/write method for device control */
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extern int dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16,int);
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extern int dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
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/* commonly used remote control parsing */
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extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);
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/* commonly used firmware download types and function */
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struct hexline {
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u8 len;
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u32 addr;
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u8 type;
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u8 data[255];
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u8 chk;
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};
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extern int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type);
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extern int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos);
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#endif
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