Root/drivers/staging/line6/dumprequest.h

1/*
2 * Line6 Linux USB driver - 0.9.1beta
3 *
4 * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2.
9 *
10 */
11
12#ifndef DUMPREQUEST_H
13#define DUMPREQUEST_H
14
15#include <linux/usb.h>
16#include <linux/wait.h>
17#include <sound/core.h>
18
19enum {
20    LINE6_DUMP_NONE,
21    LINE6_DUMP_CURRENT
22};
23
24struct line6_dump_reqbuf {
25    /**
26         Buffer for dump requests.
27    */
28    unsigned char *buffer;
29
30    /**
31         Size of dump request.
32    */
33    size_t length;
34};
35
36/**
37     Provides the functionality to request channel/model/... dump data from a
38     Line6 device.
39*/
40struct line6_dump_request {
41    /**
42         Wait queue for access to program dump data.
43    */
44    wait_queue_head_t wait;
45
46    /**
47         Indicates an unfinished program dump request.
48         0: no dump
49         1: dump current settings
50         Other device-specific values are also allowed.
51    */
52    int in_progress;
53
54    /**
55         Dump request buffers
56    */
57    struct line6_dump_reqbuf reqbufs[1];
58};
59
60extern void line6_dump_finished(struct line6_dump_request *l6dr);
61extern int line6_dump_request_async(struct line6_dump_request *l6dr,
62                    struct usb_line6 *line6, int num, int dest);
63extern void line6_dump_started(struct line6_dump_request *l6dr, int dest);
64extern void line6_dumpreq_destruct(struct line6_dump_request *l6dr);
65extern void line6_dumpreq_destructbuf(struct line6_dump_request *l6dr, int num);
66extern int line6_dumpreq_init(struct line6_dump_request *l6dr, const void *buf,
67                  size_t len);
68extern int line6_dumpreq_initbuf(struct line6_dump_request *l6dr,
69                 const void *buf, size_t len, int num);
70extern void line6_invalidate_current(struct line6_dump_request *l6dr);
71extern void line6_dump_wait(struct line6_dump_request *l6dr);
72extern int line6_dump_wait_interruptible(struct line6_dump_request *l6dr);
73extern int line6_dump_wait_timeout(struct line6_dump_request *l6dr,
74                   long timeout);
75
76#endif
77

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