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/*
* Line 6 Linux USB driver
*
* Copyright (C) 2004-2010 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 <sound/core.h>
#include "midi.h"
#define DRIVER_NAME "line6usb"
#define LINE6_TIMEOUT 1
#define LINE6_BUFSIZE_LISTEN 32
#define LINE6_MESSAGE_MAXLEN 256
/*
Line 6 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_STARTUP_PROGRESS(x, n) \
do { \
if ((x) >= (n)) \
return; \
x = (n); \
} while (0)
extern const unsigned char line6_midi_id[3];
static const int SYSEX_DATA_OFS = sizeof(line6_midi_id) + 3;
static const int SYSEX_EXTRA_SIZE = sizeof(line6_midi_id) + 4;
/**
Common properties of Line 6 devices.
*/
struct line6_properties {
/**
Card id string (maximum 16 characters).
This can be used to address the device in ALSA programs as
"default:CARD=<id>"
*/
const char *id;
/**
Card short name (maximum 32 characters).
*/
const char *name;
/**
Bit vector defining this device's capabilities in the
line6usb driver.
*/
int capabilities;
int altsetting;
unsigned ep_ctrl_r;
unsigned ep_ctrl_w;
unsigned ep_audio_r;
unsigned ep_audio_w;
};
/**
Common data shared by all Line 6 devices.
Corresponds to a pair of USB endpoints.
*/
struct usb_line6 {
/**
USB device.
*/
struct usb_device *usbdev;
/**
Properties.
*/
const struct line6_properties *properties;
/**
Interval (ms).
*/
int interval;
/**
Maximum size of USB packet.
*/
int max_packet_size;
/**
Device representing the USB interface.
*/
struct device *ifcdev;
/**
Line 6 sound card data structure.
Each device has at least MIDI or PCM.
*/
struct snd_card *card;
/**
Line 6 PCM device data structure.
*/
struct snd_line6_pcm *line6pcm;
/**
Line 6 MIDI device data structure.
*/
struct snd_line6_midi *line6midi;
/**
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;
void (*process_message)(struct usb_line6 *);
void (*disconnect)(struct usb_interface *);
};
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,
struct device_attribute *attr, char *buf);
extern int line6_read_data(struct usb_line6 *line6, int address, void *data,
size_t datalen);
extern int line6_read_serial_number(struct usb_line6 *line6,
int *serial_number);
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, struct device_attribute *attr,
const char *buf, size_t count);
extern void line6_start_timer(struct timer_list *timer, unsigned int msecs,
void (*function)(unsigned long),
unsigned long data);
extern int line6_version_request_async(struct usb_line6 *line6);
extern int line6_write_data(struct usb_line6 *line6, int address, void *data,
size_t datalen);
int line6_probe(struct usb_interface *interface,
struct usb_line6 *line6,
const struct line6_properties *properties,
int (*private_init)(struct usb_interface *, struct usb_line6 *));
void line6_disconnect(struct usb_interface *interface);
#ifdef CONFIG_PM
int line6_suspend(struct usb_interface *interface, pm_message_t message);
int line6_resume(struct usb_interface *interface);
#endif
#endif
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