2 * Line6 Linux USB driver - 0.8.0
4 * Copyright (C) 2004-2009 Markus Grabner (grabner@icg.tugraz.at)
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.
18 #include <linux/spinlock.h>
19 #include <linux/usb.h>
20 #include <linux/wait.h>
22 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
23 #include <sound/driver.h>
26 #include <sound/core.h>
31 #define DRIVER_NAME "line6usb"
33 #define LINE6_TIMEOUT 1
34 #define LINE6_MAX_DEVICES 8
35 #define LINE6_BUFSIZE_LISTEN 32
36 #define LINE6_MESSAGE_MAXLEN 256
40 Line6 MIDI control commands
42 #define LINE6_PARAM_CHANGE 0xb0
43 #define LINE6_PROGRAM_CHANGE 0xc0
44 #define LINE6_SYSEX_BEGIN 0xf0
45 #define LINE6_SYSEX_END 0xf7
46 #define LINE6_RESET 0xff
49 MIDI channel for messages initiated by the host
50 (and eventually echoed back by the device)
52 #define LINE6_CHANNEL_HOST 0x00
55 MIDI channel for messages initiated by the device
57 #define LINE6_CHANNEL_DEVICE 0x02
59 #define LINE6_CHANNEL_UNKNOWN 5 /* don't know yet what this is good for */
61 #define LINE6_CHANNEL_MASK 0x0f
64 #define MISSING_CASE printk("line6usb driver bug: missing case in %s:%d\n", __FILE__, __LINE__)
67 #define CHECK_RETURN(x) if((err = x) < 0) return err
70 extern const unsigned char line6_midi_id[3];
71 extern struct usb_line6 *line6_devices[LINE6_MAX_DEVICES];
72 extern struct workqueue_struct *line6_workqueue;
74 static const int SYSEX_DATA_OFS = sizeof(line6_midi_id) + 3;
75 static const int SYSEX_EXTRA_SIZE = sizeof(line6_midi_id) + 4;
79 Common properties of Line6 devices.
81 struct line6_properties {
88 Common data shared by all Line6 devices.
89 Corresponds to a pair of USB endpoints.
95 struct usb_device *usbdev;
105 const struct line6_properties *properties;
110 int interface_number;
118 Maximum size of USB packet.
123 Device representing the USB interface.
125 struct device *ifcdev;
128 Line6 sound card data structure.
129 Each device has at least MIDI or PCM.
131 struct snd_card *card;
134 Line6 PCM device data structure.
136 struct snd_line6_pcm *line6pcm;
139 Line6 MIDI device data structure.
141 struct snd_line6_midi *line6midi;
144 USB endpoint for listening to control commands.
149 USB endpoint for writing control commands.
151 int ep_control_write;
154 URB for listening to PODxt Pro control endpoint.
156 struct urb *urb_listen;
159 Buffer for listening to PODxt Pro control endpoint.
161 unsigned char *buffer_listen;
164 Buffer for message to be processed.
166 unsigned char *buffer_message;
169 Length of message to be processed.
175 extern char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1, int code2, int size);
176 extern ssize_t line6_nop_read(struct device *dev, DEVICE_ATTRIBUTE char *buf);
177 extern ssize_t line6_nop_write(struct device *dev, DEVICE_ATTRIBUTE const char *buf, size_t count);
178 extern int line6_read_data(struct usb_line6 *line6, int address, void *data, size_t datalen);
179 extern int line6_read_serial_number(struct usb_line6 *line6, int *serial_number);
180 extern int line6_send_program(struct usb_line6 *line6, int value);
181 extern int line6_send_raw_message(struct usb_line6 *line6, const char *buffer, int size);
182 extern int line6_send_raw_message_async(struct usb_line6 *line6, const char *buffer, int size);
183 extern int line6_send_sysex_message(struct usb_line6 *line6, const char *buffer, int size);
184 extern ssize_t line6_set_raw(struct device *dev, DEVICE_ATTRIBUTE const char *buf, size_t count);
185 extern int line6_transmit_parameter(struct usb_line6 *line6, int param, int value);
186 extern int line6_write_data(struct usb_line6 *line6, int address, void *data, size_t datalen);
187 extern void line6_write_hexdump(struct usb_line6 *line6, char dir, const unsigned char *buffer, int size);