LXR linux/drivers/staging/line6/dumprequest.h

   1/*
   2 * Line6 Linux USB driver - 0.8.0
   3 *
   4 * Copyright (C) 2004-2009 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
  16#include <linux/usb.h>
  17#include <linux/wait.h>
  18
  19#include <sound/core.h>
  20
  21
  22enum {
  23        LINE6_DUMP_NONE,
  24        LINE6_DUMP_CURRENT
  25};
  26
  27
  28struct line6_dump_reqbuf {
  29        /**
  30                 Buffer for dump requests.
  31        */
  32        unsigned char *buffer;
  33
  34        /**
  35                 Size of dump request.
  36        */
  37        size_t length;
  38};
  39
  40/**
  41         Provides the functionality to request channel/model/... dump data from a
  42         Line6 device.
  43*/
  44struct line6_dump_request {
  45        /**
  46                 Wait queue for access to program dump data.
  47        */
  48        wait_queue_head_t wait;
  49
  50        /**
  51                 Indicates an unfinished program dump request.
  52                 0: no dump
  53                 1: dump current settings
  54                 Other device-specific values are also allowed.
  55        */
  56        int in_progress;
  57
  58        /**
  59                 Timer for delayed dump request.
  60        */
  61        struct timer_list timer;
  62
  63        /**
  64                 Flag if initial dump request has been successful.
  65        */
  66        char ok;
  67
  68        /**
  69                 Dump request buffers
  70        */
  71        struct line6_dump_reqbuf reqbufs[1];
  72};
  73
  74extern void line6_dump_finished(struct line6_dump_request *l6dr);
  75extern int line6_dump_request_async(struct line6_dump_request *l6dr,
  76                                    struct usb_line6 *line6, int num);
  77extern void line6_dump_started(struct line6_dump_request *l6dr, int dest);
  78extern void line6_dumpreq_destruct(struct line6_dump_request *l6dr);
  79extern void line6_dumpreq_destructbuf(struct line6_dump_request *l6dr, int num);
  80extern int line6_dumpreq_init(struct line6_dump_request *l6dr, const void *buf,
  81                              size_t len);
  82extern int line6_dumpreq_initbuf(struct line6_dump_request *l6dr,
  83                                 const void *buf, size_t len, int num);
  84extern void line6_invalidate_current(struct line6_dump_request *l6dr);
  85extern void line6_startup_delayed(struct line6_dump_request *l6dr, int seconds,
  86                                  void (*function)(unsigned long), void *data);
  87extern int line6_wait_dump(struct line6_dump_request *l6dr, int nonblock);
  88
  89
  90#endif
  91