drivers/staging/line6/dumprequest.h

   1 /*
   2  * Line6 Linux USB driver - 0.9.1beta
   3  *
   4  * Copyright (C) 2004-2010 Markus Grabner ([email protected])
   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
  19 enum {
  20         LINE6_DUMP_NONE,
  21         LINE6_DUMP_CURRENT
  22 };
  23
  24 struct 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 */
  40 struct 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
  60 extern void line6_dump_finished(struct line6_dump_request *l6dr);
  61 extern int line6_dump_request_async(struct line6_dump_request *l6dr,
  62                                     struct usb_line6 *line6, int num, int dest);
  63 extern void line6_dump_started(struct line6_dump_request *l6dr, int dest);
  64 extern void line6_dumpreq_destruct(struct line6_dump_request *l6dr);
  65 extern void line6_dumpreq_destructbuf(struct line6_dump_request *l6dr, int num);
  66 extern int line6_dumpreq_init(struct line6_dump_request *l6dr, const void *buf,
  67                               size_t len);
  68 extern int line6_dumpreq_initbuf(struct line6_dump_request *l6dr,
  69                                  const void *buf, size_t len, int num);
  70 extern void line6_invalidate_current(struct line6_dump_request *l6dr);
  71 extern void line6_dump_wait(struct line6_dump_request *l6dr);
  72 extern int line6_dump_wait_interruptible(struct line6_dump_request *l6dr);
  73 extern int line6_dump_wait_timeout(struct line6_dump_request *l6dr,
  74                                    long timeout);
  75
  76 #endif