drivers/staging/line6/pod.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 POD_H
  13 #define POD_H
  14
  15 #include <linux/interrupt.h>
  16 #include <linux/spinlock.h>
  17 #include <linux/usb.h>
  18 #include <linux/wait.h>
  19
  20 #include <sound/core.h>
  21
  22 #include "driver.h"
  23 #include "dumprequest.h"
  24
  25 /*
  26         PODxt Live interfaces
  27 */
  28 #define PODXTLIVE_INTERFACE_POD    0
  29 #define PODXTLIVE_INTERFACE_VARIAX 1
  30
  31 /*
  32         Locate name in binary program dump
  33 */
  34 #define POD_NAME_OFFSET 0
  35 #define POD_NAME_LENGTH 16
  36
  37 /*
  38         Other constants
  39 */
  40 #define POD_CONTROL_SIZE 0x80
  41 #define POD_BUFSIZE_DUMPREQ 7
  42 #define POD_STARTUP_DELAY 1000
  43
  44 /*
  45         Stages of POD startup procedure
  46 */
  47 enum {
  48         POD_STARTUP_INIT = 1,
  49         POD_STARTUP_DUMPREQ,
  50         POD_STARTUP_VERSIONREQ,
  51         POD_STARTUP_WORKQUEUE,
  52         POD_STARTUP_SETUP,
  53         POD_STARTUP_LAST = POD_STARTUP_SETUP - 1
  54 };
  55
  56 /**
  57         Data structure for values that need to be requested explicitly.
  58         This is the case for system and tuner settings.
  59 */
  60 struct ValueWait {
  61         int value;
  62         wait_queue_head_t wait;
  63 };
  64
  65 /**
  66         Binary PODxt Pro program dump
  67 */
  68 struct pod_program {
  69         /**
  70                 Header information (including program name).
  71         */
  72         unsigned char header[0x20];
  73
  74         /**
  75                 Program parameters.
  76         */
  77         unsigned char control[POD_CONTROL_SIZE];
  78 };
  79
  80 struct usb_line6_pod {
  81         /**
  82                 Generic Line6 USB data.
  83         */
  84         struct usb_line6 line6;
  85
  86         /**
  87                 Dump request structure.
  88         */
  89         struct line6_dump_request dumpreq;
  90
  91         /**
  92                 Current program number.
  93         */
  94         unsigned char channel_num;
  95
  96         /**
  97                 Current program settings.
  98         */
  99         struct pod_program prog_data;
 100
 101         /**
 102                 Buffer for data retrieved from or to be stored on PODxt Pro.
 103         */
 104         struct pod_program prog_data_buf;
 105
 106         /**
 107                 Tuner mute mode.
 108         */
 109         struct ValueWait tuner_mute;
 110
 111         /**
 112                 Tuner base frequency (typically 440Hz).
 113         */
 114         struct ValueWait tuner_freq;
 115
 116         /**
 117                 Note received from tuner.
 118         */
 119         struct ValueWait tuner_note;
 120
 121         /**
 122                 Pitch value received from tuner.
 123         */
 124         struct ValueWait tuner_pitch;
 125
 126         /**
 127                 Instrument monitor level.
 128         */
 129         struct ValueWait monitor_level;
 130
 131         /**
 132                 Audio routing mode.
 133                 0: send processed guitar
 134                 1: send clean guitar
 135                 2: send clean guitar re-amp playback
 136                 3: send re-amp playback
 137         */
 138         struct ValueWait routing;
 139
 140         /**
 141                 Wait for audio clipping event.
 142         */
 143         struct ValueWait clipping;
 144
 145         /**
 146                 Timer for device initializaton.
 147         */
 148         struct timer_list startup_timer;
 149
 150         /**
 151                 Work handler for device initializaton.
 152         */
 153         struct work_struct startup_work;
 154
 155         /**
 156                 Current progress in startup procedure.
 157         */
 158         int startup_progress;
 159
 160         /**
 161                 Dirty flags for access to parameter data.
 162         */
 163         unsigned long param_dirty[POD_CONTROL_SIZE / sizeof(unsigned long)];
 164
 165         /**
 166                 Some atomic flags.
 167         */
 168         unsigned long atomic_flags;
 169
 170         /**
 171                 Serial number of device.
 172         */
 173         int serial_number;
 174
 175         /**
 176                 Firmware version (x 100).
 177         */
 178         int firmware_version;
 179
 180         /**
 181                 Device ID.
 182         */
 183         int device_id;
 184
 185         /**
 186                 Flag to indicate modification of current program settings.
 187         */
 188         char dirty;
 189
 190         /**
 191                 Flag to enable MIDI postprocessing.
 192         */
 193         char midi_postprocess;
 194 };
 195
 196 extern void line6_pod_disconnect(struct usb_interface *interface);
 197 extern int line6_pod_init(struct usb_interface *interface,
 198                           struct usb_line6_pod *pod);
 199 extern void line6_pod_midi_postprocess(struct usb_line6_pod *pod,
 200                                        unsigned char *data, int length);
 201 extern void line6_pod_process_message(struct usb_line6_pod *pod);
 202 extern void line6_pod_transmit_parameter(struct usb_line6_pod *pod, int param,
 203                                          int value);
 204
 205 #endif