1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/*
* 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 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
|
