705ececd1c
This is an experimental Linux driver for the guitar amp, cab, and effects modeller PODxt Pro by Line6 (and similar devices), supporting the following features: - Reading/writing individual parameters - Reading/writing complete channel, effects setup, and amp setup data - Channel switching - Virtual MIDI interface - Tuner access - Playback/capture/mixer device for any ALSA-compatible PCM audio application - Signal routing (record clean/processed guitar signal, re-amping) Moreover, preliminary support for the Variax Workbench is included. From: Markus Grabner <grabner@icg.tugraz.at> Cc: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
191 lines
4.2 KiB
C
191 lines
4.2 KiB
C
/*
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* Line6 Linux USB driver - 0.8.0
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*
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* Copyright (C) 2004-2009 Markus Grabner (grabner@icg.tugraz.at)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#ifndef DRIVER_H
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#define DRIVER_H
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#include "config.h"
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#include <linux/spinlock.h>
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#include <linux/usb.h>
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#include <linux/wait.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
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#include <sound/driver.h>
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#endif
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#include <sound/core.h>
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#include "midi.h"
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#define DRIVER_NAME "line6usb"
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#define LINE6_TIMEOUT 1
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#define LINE6_MAX_DEVICES 8
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#define LINE6_BUFSIZE_LISTEN 32
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#define LINE6_MESSAGE_MAXLEN 256
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/*
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Line6 MIDI control commands
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*/
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#define LINE6_PARAM_CHANGE 0xb0
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#define LINE6_PROGRAM_CHANGE 0xc0
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#define LINE6_SYSEX_BEGIN 0xf0
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#define LINE6_SYSEX_END 0xf7
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#define LINE6_RESET 0xff
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/*
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MIDI channel for messages initiated by the host
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(and eventually echoed back by the device)
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*/
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#define LINE6_CHANNEL_HOST 0x00
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/*
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MIDI channel for messages initiated by the device
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*/
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#define LINE6_CHANNEL_DEVICE 0x02
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#define LINE6_CHANNEL_UNKNOWN 5 /* don't know yet what this is good for */
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#define LINE6_CHANNEL_MASK 0x0f
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#define MISSING_CASE printk("line6usb driver bug: missing case in %s:%d\n", __FILE__, __LINE__)
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#define CHECK_RETURN(x) if((err = x) < 0) return err
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extern const unsigned char line6_midi_id[3];
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extern struct usb_line6 *line6_devices[LINE6_MAX_DEVICES];
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extern struct workqueue_struct *line6_workqueue;
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static const int SYSEX_DATA_OFS = sizeof(line6_midi_id) + 3;
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static const int SYSEX_EXTRA_SIZE = sizeof(line6_midi_id) + 4;
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/**
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Common properties of Line6 devices.
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*/
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struct line6_properties {
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const char *name;
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int device_bit;
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int capabilities;
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};
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/**
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Common data shared by all Line6 devices.
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Corresponds to a pair of USB endpoints.
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*/
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struct usb_line6 {
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/**
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USB device.
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*/
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struct usb_device *usbdev;
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/**
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Product id.
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*/
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int product;
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/**
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Properties.
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*/
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const struct line6_properties *properties;
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/**
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Interface number.
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*/
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int interface_number;
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/**
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Interval (ms).
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*/
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int interval;
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/**
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Maximum size of USB packet.
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*/
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int max_packet_size;
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/**
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Device representing the USB interface.
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*/
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struct device *ifcdev;
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/**
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Line6 sound card data structure.
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Each device has at least MIDI or PCM.
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*/
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struct snd_card *card;
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/**
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Line6 PCM device data structure.
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*/
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struct snd_line6_pcm *line6pcm;
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/**
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Line6 MIDI device data structure.
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*/
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struct snd_line6_midi *line6midi;
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/**
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USB endpoint for listening to control commands.
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*/
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int ep_control_read;
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/**
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USB endpoint for writing control commands.
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*/
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int ep_control_write;
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/**
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URB for listening to PODxt Pro control endpoint.
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*/
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struct urb *urb_listen;
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/**
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Buffer for listening to PODxt Pro control endpoint.
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*/
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unsigned char *buffer_listen;
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/**
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Buffer for message to be processed.
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*/
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unsigned char *buffer_message;
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/**
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Length of message to be processed.
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*/
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int message_length;
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};
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extern char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1, int code2, int size);
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extern ssize_t line6_nop_read(struct device *dev, DEVICE_ATTRIBUTE char *buf);
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extern ssize_t line6_nop_write(struct device *dev, DEVICE_ATTRIBUTE const char *buf, size_t count);
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extern int line6_read_data(struct usb_line6 *line6, int address, void *data, size_t datalen);
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extern int line6_read_serial_number(struct usb_line6 *line6, int *serial_number);
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extern int line6_send_program(struct usb_line6 *line6, int value);
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extern int line6_send_raw_message(struct usb_line6 *line6, const char *buffer, int size);
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extern int line6_send_raw_message_async(struct usb_line6 *line6, const char *buffer, int size);
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extern int line6_send_sysex_message(struct usb_line6 *line6, const char *buffer, int size);
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extern ssize_t line6_set_raw(struct device *dev, DEVICE_ATTRIBUTE const char *buf, size_t count);
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extern int line6_transmit_parameter(struct usb_line6 *line6, int param, int value);
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extern int line6_write_data(struct usb_line6 *line6, int address, void *data, size_t datalen);
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extern void line6_write_hexdump(struct usb_line6 *line6, char dir, const unsigned char *buffer, int size);
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#endif
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