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/*
* Line6 Linux USB driver - 0.7.3
*
* Copyright (C) 2004-2008 Markus Grabner (grabner@icg.tugraz.at)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, version 2.
*
*/
#ifndef DRIVER_H
#define DRIVER_H
#include <linux/spinlock.h>
#include <linux/usb.h>
#include <linux/wait.h>
#include <sound/driver.h>
#include <sound/core.h>
#include "config.h"
#include "midi.h"
#define DRIVER_NAME "line6usb"
#define LINE6_TIMEOUT 1
#define LINE6_MAX_DEVICES 8
#define LINE6_BUFSIZE_LISTEN 32
#define LINE6_MESSAGE_MAXLEN 256
/*
Line6 MIDI control commands
*/
#define LINE6_PARAM_CHANGE 0xb0
#define LINE6_PROGRAM_CHANGE 0xc0
#define LINE6_SYSEX_BEGIN 0xf0
#define LINE6_SYSEX_END 0xf7
#define LINE6_RESET 0xff
/*
MIDI channel for messages initiated by the host
(and eventually echoed back by the device)
*/
#define LINE6_CHANNEL_HOST 0x00
/*
MIDI channel for messages initiated by the device
*/
#define LINE6_CHANNEL_DEVICE 0x02
#define LINE6_CHANNEL_UNKNOWN 5 /* don't know yet what this is good for */
#define LINE6_CHANNEL_MASK 0x0f
#define CHECK_RETURN(x) if((err = x) < 0) return err
extern const unsigned char line6_midi_id[3];
extern struct usb_line6 *line6_devices[LINE6_MAX_DEVICES];
extern struct workqueue_struct *line6_workqueue;
static const int SYSEX_DATA_OFS = sizeof(line6_midi_id) + 3;
static const int SYSEX_EXTRA_SIZE = sizeof(line6_midi_id) + 4;
/**
Common data shared by all Line6 devices.
Corresponds to a pair of USB endpoints.
*/
struct usb_line6 {
/**
USB device.
*/
struct usb_device *usbdev;
/**
Name of this device.
*/
const char *devname;
/**
Interface number.
*/
int interface_number;
/**
Interval (ms).
*/
int interval;
/**
Maximum size of USB packet.
*/
int max_packet_size;
/**
Bit code of this device.
*/
int devbit;
/**
Device representing the USB interface.
*/
struct device *ifcdev;
/**
Line6 sound card data structure.
Each device has at least a MIDI connection.
*/
struct snd_card *card;
/**
Line6 MIDI device data structure.
*/
struct snd_line6_midi *midi;
/**
USB endpoint for listening to control commands.
*/
int ep_control_read;
/**
USB endpoint for writing control commands.
*/
int ep_control_write;
/**
URB for listening to PODxt Pro control endpoint.
*/
struct urb *urb_listen;
/**
Buffer for listening to PODxt Pro control endpoint.
*/
unsigned char *buffer_listen;
/**
Buffer for message to be processed.
*/
unsigned char *buffer_message;
/**
Length of message to be processed.
*/
int message_length;
};
extern char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1, int code2, int size);
extern ssize_t line6_nop_read(struct device *dev, DEVICE_ATTRIBUTE char *buf);
extern ssize_t line6_nop_write(struct device *dev, DEVICE_ATTRIBUTE const char *buf, size_t count);
extern int line6_send_program(struct usb_line6 *line6, int value);
extern int line6_send_raw_message(struct usb_line6 *line6, const char *buffer, int size);
extern int line6_send_raw_message_async(struct usb_line6 *line6, const char *buffer, int size);
extern int line6_send_sysex_message(struct usb_line6 *line6, const char *buffer, int size);
extern ssize_t line6_set_raw(struct device *dev, DEVICE_ATTRIBUTE const char *buf, size_t count);
extern int line6_transmit_parameter(struct usb_line6 *line6, int param, int value);
extern void line6_write_hexdump(struct usb_line6 *line6, char dir, const unsigned char *buffer, int size);
#endif
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