309 строки
7.8 KiB
C
309 строки
7.8 KiB
C
/*
|
|
* Line 6 Linux USB driver
|
|
*
|
|
* Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation, version 2.
|
|
*
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/module.h>
|
|
#include <sound/core.h>
|
|
|
|
#include "driver.h"
|
|
|
|
#define VARIAX_STARTUP_DELAY1 1000
|
|
#define VARIAX_STARTUP_DELAY3 100
|
|
#define VARIAX_STARTUP_DELAY4 100
|
|
|
|
/*
|
|
Stages of Variax startup procedure
|
|
*/
|
|
enum {
|
|
VARIAX_STARTUP_INIT = 1,
|
|
VARIAX_STARTUP_VERSIONREQ,
|
|
VARIAX_STARTUP_WAIT,
|
|
VARIAX_STARTUP_ACTIVATE,
|
|
VARIAX_STARTUP_WORKQUEUE,
|
|
VARIAX_STARTUP_SETUP,
|
|
VARIAX_STARTUP_LAST = VARIAX_STARTUP_SETUP - 1
|
|
};
|
|
|
|
enum {
|
|
LINE6_PODXTLIVE_VARIAX,
|
|
LINE6_VARIAX
|
|
};
|
|
|
|
struct usb_line6_variax {
|
|
/* Generic Line 6 USB data */
|
|
struct usb_line6 line6;
|
|
|
|
/* Buffer for activation code */
|
|
unsigned char *buffer_activate;
|
|
|
|
/* Handler for device initialization */
|
|
struct work_struct startup_work;
|
|
|
|
/* Timers for device initialization */
|
|
struct timer_list startup_timer1;
|
|
struct timer_list startup_timer2;
|
|
|
|
/* Current progress in startup procedure */
|
|
int startup_progress;
|
|
};
|
|
|
|
#define VARIAX_OFFSET_ACTIVATE 7
|
|
|
|
/*
|
|
This message is sent by the device during initialization and identifies
|
|
the connected guitar version.
|
|
*/
|
|
static const char variax_init_version[] = {
|
|
0xf0, 0x7e, 0x7f, 0x06, 0x02, 0x00, 0x01, 0x0c,
|
|
0x07, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
/*
|
|
This message is the last one sent by the device during initialization.
|
|
*/
|
|
static const char variax_init_done[] = {
|
|
0xf0, 0x00, 0x01, 0x0c, 0x07, 0x00, 0x6b
|
|
};
|
|
|
|
static const char variax_activate[] = {
|
|
0xf0, 0x00, 0x01, 0x0c, 0x07, 0x00, 0x2a, 0x01,
|
|
0xf7
|
|
};
|
|
|
|
/* forward declarations: */
|
|
static void variax_startup2(unsigned long data);
|
|
static void variax_startup4(unsigned long data);
|
|
static void variax_startup5(unsigned long data);
|
|
|
|
static void variax_activate_async(struct usb_line6_variax *variax, int a)
|
|
{
|
|
variax->buffer_activate[VARIAX_OFFSET_ACTIVATE] = a;
|
|
line6_send_raw_message_async(&variax->line6, variax->buffer_activate,
|
|
sizeof(variax_activate));
|
|
}
|
|
|
|
/*
|
|
Variax startup procedure.
|
|
This is a sequence of functions with special requirements (e.g., must
|
|
not run immediately after initialization, must not run in interrupt
|
|
context). After the last one has finished, the device is ready to use.
|
|
*/
|
|
|
|
static void variax_startup1(struct usb_line6_variax *variax)
|
|
{
|
|
CHECK_STARTUP_PROGRESS(variax->startup_progress, VARIAX_STARTUP_INIT);
|
|
|
|
/* delay startup procedure: */
|
|
line6_start_timer(&variax->startup_timer1, VARIAX_STARTUP_DELAY1,
|
|
variax_startup2, (unsigned long)variax);
|
|
}
|
|
|
|
static void variax_startup2(unsigned long data)
|
|
{
|
|
struct usb_line6_variax *variax = (struct usb_line6_variax *)data;
|
|
struct usb_line6 *line6 = &variax->line6;
|
|
|
|
/* schedule another startup procedure until startup is complete: */
|
|
if (variax->startup_progress >= VARIAX_STARTUP_LAST)
|
|
return;
|
|
|
|
variax->startup_progress = VARIAX_STARTUP_VERSIONREQ;
|
|
line6_start_timer(&variax->startup_timer1, VARIAX_STARTUP_DELAY1,
|
|
variax_startup2, (unsigned long)variax);
|
|
|
|
/* request firmware version: */
|
|
line6_version_request_async(line6);
|
|
}
|
|
|
|
static void variax_startup3(struct usb_line6_variax *variax)
|
|
{
|
|
CHECK_STARTUP_PROGRESS(variax->startup_progress, VARIAX_STARTUP_WAIT);
|
|
|
|
/* delay startup procedure: */
|
|
line6_start_timer(&variax->startup_timer2, VARIAX_STARTUP_DELAY3,
|
|
variax_startup4, (unsigned long)variax);
|
|
}
|
|
|
|
static void variax_startup4(unsigned long data)
|
|
{
|
|
struct usb_line6_variax *variax = (struct usb_line6_variax *)data;
|
|
|
|
CHECK_STARTUP_PROGRESS(variax->startup_progress,
|
|
VARIAX_STARTUP_ACTIVATE);
|
|
|
|
/* activate device: */
|
|
variax_activate_async(variax, 1);
|
|
line6_start_timer(&variax->startup_timer2, VARIAX_STARTUP_DELAY4,
|
|
variax_startup5, (unsigned long)variax);
|
|
}
|
|
|
|
static void variax_startup5(unsigned long data)
|
|
{
|
|
struct usb_line6_variax *variax = (struct usb_line6_variax *)data;
|
|
|
|
CHECK_STARTUP_PROGRESS(variax->startup_progress,
|
|
VARIAX_STARTUP_WORKQUEUE);
|
|
|
|
/* schedule work for global work queue: */
|
|
schedule_work(&variax->startup_work);
|
|
}
|
|
|
|
static void variax_startup6(struct work_struct *work)
|
|
{
|
|
struct usb_line6_variax *variax =
|
|
container_of(work, struct usb_line6_variax, startup_work);
|
|
|
|
CHECK_STARTUP_PROGRESS(variax->startup_progress, VARIAX_STARTUP_SETUP);
|
|
|
|
/* ALSA audio interface: */
|
|
snd_card_register(variax->line6.card);
|
|
}
|
|
|
|
/*
|
|
Process a completely received message.
|
|
*/
|
|
static void line6_variax_process_message(struct usb_line6 *line6)
|
|
{
|
|
struct usb_line6_variax *variax = (struct usb_line6_variax *) line6;
|
|
const unsigned char *buf = variax->line6.buffer_message;
|
|
|
|
switch (buf[0]) {
|
|
case LINE6_RESET:
|
|
dev_info(variax->line6.ifcdev, "VARIAX reset\n");
|
|
break;
|
|
|
|
case LINE6_SYSEX_BEGIN:
|
|
if (memcmp(buf + 1, variax_init_version + 1,
|
|
sizeof(variax_init_version) - 1) == 0) {
|
|
variax_startup3(variax);
|
|
} else if (memcmp(buf + 1, variax_init_done + 1,
|
|
sizeof(variax_init_done) - 1) == 0) {
|
|
/* notify of complete initialization: */
|
|
variax_startup4((unsigned long)variax);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
Variax destructor.
|
|
*/
|
|
static void line6_variax_disconnect(struct usb_line6 *line6)
|
|
{
|
|
struct usb_line6_variax *variax = (struct usb_line6_variax *)line6;
|
|
|
|
del_timer(&variax->startup_timer1);
|
|
del_timer(&variax->startup_timer2);
|
|
cancel_work_sync(&variax->startup_work);
|
|
|
|
kfree(variax->buffer_activate);
|
|
}
|
|
|
|
/*
|
|
Try to init workbench device.
|
|
*/
|
|
static int variax_init(struct usb_line6 *line6,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_line6_variax *variax = (struct usb_line6_variax *) line6;
|
|
int err;
|
|
|
|
line6->process_message = line6_variax_process_message;
|
|
line6->disconnect = line6_variax_disconnect;
|
|
|
|
init_timer(&variax->startup_timer1);
|
|
init_timer(&variax->startup_timer2);
|
|
INIT_WORK(&variax->startup_work, variax_startup6);
|
|
|
|
/* initialize USB buffers: */
|
|
variax->buffer_activate = kmemdup(variax_activate,
|
|
sizeof(variax_activate), GFP_KERNEL);
|
|
|
|
if (variax->buffer_activate == NULL)
|
|
return -ENOMEM;
|
|
|
|
/* initialize MIDI subsystem: */
|
|
err = line6_init_midi(&variax->line6);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* initiate startup procedure: */
|
|
variax_startup1(variax);
|
|
return 0;
|
|
}
|
|
|
|
#define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
|
|
#define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
|
|
|
|
/* table of devices that work with this driver */
|
|
static const struct usb_device_id variax_id_table[] = {
|
|
{ LINE6_IF_NUM(0x4650, 1), .driver_info = LINE6_PODXTLIVE_VARIAX },
|
|
{ LINE6_DEVICE(0x534d), .driver_info = LINE6_VARIAX },
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(usb, variax_id_table);
|
|
|
|
static const struct line6_properties variax_properties_table[] = {
|
|
[LINE6_PODXTLIVE_VARIAX] = {
|
|
.id = "PODxtLive",
|
|
.name = "PODxt Live",
|
|
.capabilities = LINE6_CAP_CONTROL
|
|
| LINE6_CAP_CONTROL_MIDI,
|
|
.altsetting = 1,
|
|
.ep_ctrl_r = 0x86,
|
|
.ep_ctrl_w = 0x05,
|
|
.ep_audio_r = 0x82,
|
|
.ep_audio_w = 0x01,
|
|
},
|
|
[LINE6_VARIAX] = {
|
|
.id = "Variax",
|
|
.name = "Variax Workbench",
|
|
.capabilities = LINE6_CAP_CONTROL
|
|
| LINE6_CAP_CONTROL_MIDI,
|
|
.altsetting = 1,
|
|
.ep_ctrl_r = 0x82,
|
|
.ep_ctrl_w = 0x01,
|
|
/* no audio channel */
|
|
}
|
|
};
|
|
|
|
/*
|
|
Probe USB device.
|
|
*/
|
|
static int variax_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
return line6_probe(interface, id, "Line6-Variax",
|
|
&variax_properties_table[id->driver_info],
|
|
variax_init, sizeof(struct usb_line6_variax));
|
|
}
|
|
|
|
static struct usb_driver variax_driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.probe = variax_probe,
|
|
.disconnect = line6_disconnect,
|
|
#ifdef CONFIG_PM
|
|
.suspend = line6_suspend,
|
|
.resume = line6_resume,
|
|
.reset_resume = line6_resume,
|
|
#endif
|
|
.id_table = variax_id_table,
|
|
};
|
|
|
|
module_usb_driver(variax_driver);
|
|
|
|
MODULE_DESCRIPTION("Vairax Workbench USB driver");
|
|
MODULE_LICENSE("GPL");
|