drivers/staging/line6/driver.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 DRIVER_H
  13 #define DRIVER_H
  14
  15
  16 #include "config.h"
  17
  18 #include <linux/spinlock.h>
  19 #include <linux/usb.h>
  20 #include <linux/wait.h>
  21 #include <sound/core.h>
  22
  23 #include "midi.h"
  24
  25 #define DRIVER_NAME "line6usb"
  26
  27 #define LINE6_TIMEOUT 1
  28 #define LINE6_MAX_DEVICES 8
  29 #define LINE6_BUFSIZE_LISTEN 32
  30 #define LINE6_MESSAGE_MAXLEN 256
  31
  32
  33 /*
  34         Line6 MIDI control commands
  35 */
  36 #define LINE6_PARAM_CHANGE   0xb0
  37 #define LINE6_PROGRAM_CHANGE 0xc0
  38 #define LINE6_SYSEX_BEGIN    0xf0
  39 #define LINE6_SYSEX_END      0xf7
  40 #define LINE6_RESET          0xff
  41
  42 /*
  43         MIDI channel for messages initiated by the host
  44         (and eventually echoed back by the device)
  45 */
  46 #define LINE6_CHANNEL_HOST   0x00
  47
  48 /*
  49         MIDI channel for messages initiated by the device
  50 */
  51 #define LINE6_CHANNEL_DEVICE 0x02
  52
  53 #define LINE6_CHANNEL_UNKNOWN 5  /* don't know yet what this is good for */
  54
  55 #define LINE6_CHANNEL_MASK 0x0f
  56
  57
  58 #define MISSING_CASE printk("line6usb driver bug: missing case in %s:%d\n", __FILE__, __LINE__)
  59
  60
  61 #define CHECK_RETURN(x) if((err = x) < 0) return err
  62
  63
  64 extern const unsigned char line6_midi_id[3];
  65 extern struct usb_line6 *line6_devices[LINE6_MAX_DEVICES];
  66 extern struct workqueue_struct *line6_workqueue;
  67
  68 static const int SYSEX_DATA_OFS = sizeof(line6_midi_id) + 3;
  69 static const int SYSEX_EXTRA_SIZE = sizeof(line6_midi_id) + 4;
  70
  71
  72 /**
  73          Common properties of Line6 devices.
  74 */
  75 struct line6_properties {
  76         const char *name;
  77         int device_bit;
  78         int capabilities;
  79 };
  80
  81 /**
  82          Common data shared by all Line6 devices.
  83          Corresponds to a pair of USB endpoints.
  84 */
  85 struct usb_line6 {
  86         /**
  87                  USB device.
  88         */
  89         struct usb_device *usbdev;
  90
  91         /**
  92                  Product id.
  93         */
  94         int product;
  95
  96         /**
  97                  Properties.
  98         */
  99         const struct line6_properties *properties;
 100
 101         /**
 102                  Interface number.
 103         */
 104         int interface_number;
 105
 106         /**
 107                  Interval (ms).
 108         */
 109         int interval;
 110
 111         /**
 112                  Maximum size of USB packet.
 113         */
 114         int max_packet_size;
 115
 116         /**
 117                  Device representing the USB interface.
 118         */
 119         struct device *ifcdev;
 120
 121         /**
 122                  Line6 sound card data structure.
 123                  Each device has at least MIDI or PCM.
 124         */
 125         struct snd_card *card;
 126
 127         /**
 128                  Line6 PCM device data structure.
 129         */
 130         struct snd_line6_pcm *line6pcm;
 131
 132         /**
 133                  Line6 MIDI device data structure.
 134         */
 135         struct snd_line6_midi *line6midi;
 136
 137         /**
 138                  USB endpoint for listening to control commands.
 139         */
 140         int ep_control_read;
 141
 142         /**
 143                  USB endpoint for writing control commands.
 144         */
 145         int ep_control_write;
 146
 147         /**
 148                  URB for listening to PODxt Pro control endpoint.
 149         */
 150         struct urb *urb_listen;
 151
 152         /**
 153                  Buffer for listening to PODxt Pro control endpoint.
 154         */
 155         unsigned char *buffer_listen;
 156
 157         /**
 158                  Buffer for message to be processed.
 159         */
 160         unsigned char *buffer_message;
 161
 162         /**
 163                  Length of message to be processed.
 164         */
 165         int message_length;
 166 };
 167
 168
 169 extern char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1, int code2, int size);
 170 extern ssize_t line6_nop_read(struct device *dev, struct device_attribute *attr, char *buf);
 171 extern ssize_t line6_nop_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
 172 extern int line6_read_data(struct usb_line6 *line6, int address, void *data, size_t datalen);
 173 extern int line6_read_serial_number(struct usb_line6 *line6, int *serial_number);
 174 extern int line6_send_program(struct usb_line6 *line6, int value);
 175 extern int line6_send_raw_message(struct usb_line6 *line6, const char *buffer, int size);
 176 extern int line6_send_raw_message_async(struct usb_line6 *line6, const char *buffer, int size);
 177 extern int line6_send_sysex_message(struct usb_line6 *line6, const char *buffer, int size);
 178 extern ssize_t line6_set_raw(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
 179 extern int line6_transmit_parameter(struct usb_line6 *line6, int param, int value);
 180 extern int line6_write_data(struct usb_line6 *line6, int address, void *data, size_t datalen);
 181 extern void line6_write_hexdump(struct usb_line6 *line6, char dir, const unsigned char *buffer, int size);
 182
 183
 184 #endif