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
  22 enum {
  23         LINE6_DUMP_NONE,
  24         LINE6_DUMP_CURRENT
  25 };
  26
  27
  28 struct 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 */
  44 struct 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
  74 extern void line6_dump_finished(struct line6_dump_request *l6dr);
  75 extern int line6_dump_request_async(struct line6_dump_request *l6dr,
  76                                     struct usb_line6 *line6, int num);
  77 extern void line6_dump_started(struct line6_dump_request *l6dr, int dest);
  78 extern void line6_dumpreq_destruct(struct line6_dump_request *l6dr);
  79 extern void line6_dumpreq_destructbuf(struct line6_dump_request *l6dr, int num);
  80 extern int line6_dumpreq_init(struct line6_dump_request *l6dr, const void *buf,
  81                               size_t len);
  82 extern int line6_dumpreq_initbuf(struct line6_dump_request *l6dr,
  83                                  const void *buf, size_t len, int num);
  84 extern void line6_invalidate_current(struct line6_dump_request *l6dr);
  85 extern void line6_startup_delayed(struct line6_dump_request *l6dr, int seconds,
  86                                   void (*function)(unsigned long), void *data);
  87 extern int line6_wait_dump(struct line6_dump_request *l6dr, int nonblock);
  88
  89
  90 #endif