blob: 27b986a50a0390788e002871d741daa183e97b4d [file] [log] [blame]
/*
* Line6 Linux USB driver - 0.8.0
*
* Copyright (C) 2004-2009 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 "driver.h"
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include "audio.h"
#include "capture.h"
#include "control.h"
#include "midi.h"
#include "playback.h"
#include "pod.h"
#include "revision.h"
#include "toneport.h"
#include "usbdefs.h"
#include "variax.h"
#define DRIVER_AUTHOR "Markus Grabner <grabner@icg.tugraz.at>"
#define DRIVER_DESC "Line6 USB Driver"
#define DRIVER_VERSION "0.8.0"
/* table of devices that work with this driver */
static const struct usb_device_id line6_id_table[] = {
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_BASSPODXT) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_BASSPODXTLIVE) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_BASSPODXTPRO) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_GUITARPORT) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_POCKETPOD) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_PODX3) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_PODX3LIVE) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_PODXT) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_PODXTLIVE) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_PODXTPRO) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_TONEPORT_GX) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_TONEPORT_UX1) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_TONEPORT_UX2) },
{ USB_DEVICE(LINE6_VENDOR_ID, LINE6_DEVID_VARIAX) },
{ },
};
MODULE_DEVICE_TABLE(usb, line6_id_table);
static struct line6_properties line6_properties_table[] = {
{ "BassPODxt", LINE6_BIT_BASSPODXT, LINE6_BIT_CONTROL_PCM },
{ "BassPODxt Live", LINE6_BIT_BASSPODXTLIVE, LINE6_BIT_CONTROL_PCM },
{ "BassPODxt Pro", LINE6_BIT_BASSPODXTPRO, LINE6_BIT_CONTROL_PCM },
{ "GuitarPort", LINE6_BIT_GUITARPORT, LINE6_BIT_PCM },
{ "Pocket POD", LINE6_BIT_POCKETPOD, LINE6_BIT_CONTROL_PCM },
{ "POD X3", LINE6_BIT_PODX3, LINE6_BIT_PCM },
{ "POD X3 Live", LINE6_BIT_PODX3LIVE, LINE6_BIT_PCM },
{ "PODxt", LINE6_BIT_PODXT, LINE6_BIT_CONTROL_PCM },
{ "PODxt Live", LINE6_BIT_PODXTLIVE, LINE6_BIT_CONTROL_PCM },
{ "PODxt Pro", LINE6_BIT_PODXTPRO, LINE6_BIT_CONTROL_PCM },
{ "TonePort GX", LINE6_BIT_TONEPORT_GX, LINE6_BIT_PCM },
{ "TonePort UX1", LINE6_BIT_TONEPORT_UX1, LINE6_BIT_PCM },
{ "TonePort UX2", LINE6_BIT_TONEPORT_UX2, LINE6_BIT_PCM },
{ "Variax Workbench", LINE6_BIT_VARIAX, LINE6_BIT_CONTROL }
};
/*
This is Line6's MIDI manufacturer ID.
*/
const unsigned char line6_midi_id[] = { 0x00, 0x01, 0x0c };
struct usb_line6 *line6_devices[LINE6_MAX_DEVICES];
struct workqueue_struct *line6_workqueue;
/**
Class for asynchronous messages.
*/
struct message {
struct usb_line6 *line6;
const char *buffer;
int size;
int done;
};
/*
Forward declarations.
*/
static void line6_data_received(struct urb *urb);
static int line6_send_raw_message_async_part(struct message *msg,
struct urb *urb);
/*
Start to listen on endpoint.
*/
static int line6_start_listen(struct usb_line6 *line6)
{
usb_fill_int_urb(line6->urb_listen, line6->usbdev,
usb_rcvintpipe(line6->usbdev, line6->ep_control_read),
line6->buffer_listen, LINE6_BUFSIZE_LISTEN,
line6_data_received, line6, line6->interval);
line6->urb_listen->actual_length = 0;
return usb_submit_urb(line6->urb_listen, GFP_KERNEL);
}
#if DO_DUMP_ANY
/*
Write hexdump to syslog.
*/
void line6_write_hexdump(struct usb_line6 *line6, char dir,
const unsigned char *buffer, int size)
{
static const int BYTES_PER_LINE = 8;
char hexdump[100];
char asc[BYTES_PER_LINE + 1];
int i, j;
for (i = 0; i < size; i += BYTES_PER_LINE) {
int hexdumpsize = sizeof(hexdump);
char *p = hexdump;
int n = min(size - i, BYTES_PER_LINE);
asc[n] = 0;
for (j = 0; j < BYTES_PER_LINE; ++j) {
int bytes;
if (j < n) {
unsigned char val = buffer[i + j];
bytes = snprintf(p, hexdumpsize, " %02X", val);
asc[j] = ((val >= 0x20) && (val < 0x7f)) ? val : '.';
} else
bytes = snprintf(p, hexdumpsize, " ");
if (bytes > hexdumpsize)
break; /* buffer overflow */
p += bytes;
hexdumpsize -= bytes;
}
dev_info(line6->ifcdev, "%c%04X:%s %s\n", dir, i, hexdump, asc);
}
}
#endif
#if DO_DUMP_URB_RECEIVE
/*
Dump URB data to syslog.
*/
static void line6_dump_urb(struct urb *urb)
{
struct usb_line6 *line6 = (struct usb_line6 *)urb->context;
if (urb->status < 0)
return;
line6_write_hexdump(line6, 'R', (unsigned char *)urb->transfer_buffer,
urb->actual_length);
}
#endif
/*
Send raw message in pieces of max_packet_size bytes.
*/
int line6_send_raw_message(struct usb_line6 *line6, const char *buffer,
int size)
{
int i, done = 0;
int actual_size;
#if DO_DUMP_URB_SEND
line6_write_hexdump(line6, 'S', buffer, size);
#endif
for (i = 0; i < size; i += actual_size) {
const char *frag_buf = buffer + i;
int frag_size = min(line6->max_packet_size, size - i);
int retval;
retval = usb_interrupt_msg(line6->usbdev,
usb_sndintpipe(line6->usbdev,
line6->ep_control_write),
(char *)frag_buf, frag_size,
&actual_size, LINE6_TIMEOUT * HZ);
if (retval) {
dev_err(line6->ifcdev,
"usb_interrupt_msg failed (%d)\n", retval);
break;
}
done += actual_size;
}
return done;
}
/*
Notification of completion of asynchronous request transmission.
*/
static void line6_async_request_sent(struct urb *urb)
{
struct message *msg = (struct message *)urb->context;
if (msg->done >= msg->size) {
usb_free_urb(urb);
kfree(msg);
} else
line6_send_raw_message_async_part(msg, urb);
}
/*
Asynchronously send part of a raw message.
*/
static int line6_send_raw_message_async_part(struct message *msg,
struct urb *urb)
{
int retval;
struct usb_line6 *line6 = msg->line6;
int done = msg->done;
int bytes = min(msg->size - done, line6->max_packet_size);
usb_fill_int_urb(urb, line6->usbdev,
usb_sndintpipe(line6->usbdev, line6->ep_control_write),
(char *)msg->buffer + done, bytes,
line6_async_request_sent, msg, line6->interval);
#if DO_DUMP_URB_SEND
line6_write_hexdump(line6, 'S', (char *)msg->buffer + done, bytes);
#endif
msg->done += bytes;
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval < 0) {
dev_err(line6->ifcdev, "%s: usb_submit_urb failed (%d)\n",
__func__, retval);
usb_free_urb(urb);
kfree(msg);
return -EINVAL;
}
return 0;
}
/*
Asynchronously send raw message.
*/
int line6_send_raw_message_async(struct usb_line6 *line6, const char *buffer,
int size)
{
struct message *msg;
struct urb *urb;
/* create message: */
msg = kmalloc(sizeof(struct message), GFP_ATOMIC);
if (msg == NULL) {
dev_err(line6->ifcdev, "Out of memory\n");
return -ENOMEM;
}
/* create URB: */
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (urb == NULL) {
kfree(msg);
dev_err(line6->ifcdev, "Out of memory\n");
return -ENOMEM;
}
/* set message data: */
msg->line6 = line6;
msg->buffer = buffer;
msg->size = size;
msg->done = 0;
/* start sending: */
return line6_send_raw_message_async_part(msg, urb);
}
/*
Send sysex message in pieces of wMaxPacketSize bytes.
*/
int line6_send_sysex_message(struct usb_line6 *line6, const char *buffer,
int size)
{
return line6_send_raw_message(line6, buffer, size + SYSEX_EXTRA_SIZE) - SYSEX_EXTRA_SIZE;
}
/*
Allocate buffer for sysex message and prepare header.
@param code sysex message code
@param size number of bytes between code and sysex end
*/
char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1, int code2,
int size)
{
char *buffer = kmalloc(size + SYSEX_EXTRA_SIZE, GFP_KERNEL);
if (!buffer) {
dev_err(line6->ifcdev, "out of memory\n");
return NULL;
}
buffer[0] = LINE6_SYSEX_BEGIN;
memcpy(buffer + 1, line6_midi_id, sizeof(line6_midi_id));
buffer[sizeof(line6_midi_id) + 1] = code1;
buffer[sizeof(line6_midi_id) + 2] = code2;
buffer[sizeof(line6_midi_id) + 3 + size] = LINE6_SYSEX_END;
return buffer;
}
/*
Notification of data received from the Line6 device.
*/
static void line6_data_received(struct urb *urb)
{
struct usb_line6 *line6 = (struct usb_line6 *)urb->context;
struct MidiBuffer *mb = &line6->line6midi->midibuf_in;
int done;
if (urb->status == -ESHUTDOWN)
return;
#if DO_DUMP_URB_RECEIVE
line6_dump_urb(urb);
#endif
done = midibuf_write(mb, urb->transfer_buffer, urb->actual_length);
if (done < urb->actual_length) {
midibuf_ignore(mb, done);
DEBUG_MESSAGES(dev_err(line6->ifcdev, "%d %d buffer overflow - message skipped\n", done, urb->actual_length));
}
for (;;) {
done = midibuf_read(mb, line6->buffer_message, LINE6_MESSAGE_MAXLEN);
if (done == 0)
break;
/* MIDI input filter */
if (midibuf_skip_message(mb, line6->line6midi->midi_mask_receive))
continue;
line6->message_length = done;
#if DO_DUMP_MIDI_RECEIVE
line6_write_hexdump(line6, 'r', line6->buffer_message, done);
#endif
line6_midi_receive(line6, line6->buffer_message, done);
switch (line6->usbdev->descriptor.idProduct) {
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_BASSPODXTPRO:
case LINE6_DEVID_PODXT:
case LINE6_DEVID_PODXTPRO:
case LINE6_DEVID_POCKETPOD:
pod_process_message((struct usb_line6_pod *)line6);
break;
case LINE6_DEVID_PODXTLIVE:
switch (line6->interface_number) {
case PODXTLIVE_INTERFACE_POD:
pod_process_message((struct usb_line6_pod *)line6);
break;
case PODXTLIVE_INTERFACE_VARIAX:
variax_process_message((struct usb_line6_variax *)line6);
break;
default:
dev_err(line6->ifcdev, "PODxt Live interface %d not supported\n", line6->interface_number);
}
break;
case LINE6_DEVID_VARIAX:
variax_process_message((struct usb_line6_variax *)line6);
break;
default:
MISSING_CASE;
}
}
line6_start_listen(line6);
}
static int line6_send(struct usb_line6 *line6, unsigned char *buf, size_t len)
{
int retval;
int partial;
#if DO_DUMP_URB_SEND
line6_write_hexdump(line6, 'S', buf, len);
#endif
retval = usb_interrupt_msg(line6->usbdev,
usb_sndintpipe(line6->usbdev,
line6->ep_control_write),
buf, len, &partial,
LINE6_TIMEOUT * HZ);
if (retval) {
dev_err(line6->ifcdev,
"usb_interrupt_msg failed (%d)\n", retval);
}
if (partial != len) {
dev_err(line6->ifcdev,
"usb_interrupt_msg sent partial message (%d)\n",
retval);
}
return retval;
}
/*
Send channel number (i.e., switch to a different sound).
*/
int line6_send_program(struct usb_line6 *line6, int value)
{
unsigned char *buffer;
size_t len = 2;
buffer = kmalloc(len, GFP_KERNEL);
if (!buffer) {
dev_err(line6->ifcdev, "out of memory\n");
return -ENOMEM;
}
buffer[0] = LINE6_PROGRAM_CHANGE | LINE6_CHANNEL_HOST;
buffer[1] = value;
return line6_send(line6, buffer, len);
}
/*
Transmit Line6 control parameter.
*/
int line6_transmit_parameter(struct usb_line6 *line6, int param, int value)
{
unsigned char *buffer;
size_t len = 3;
buffer = kmalloc(len, GFP_KERNEL);
if (!buffer) {
dev_err(line6->ifcdev, "out of memory\n");
return -ENOMEM;
}
buffer[0] = LINE6_PARAM_CHANGE | LINE6_CHANNEL_HOST;
buffer[1] = param;
buffer[2] = value;
return line6_send(line6, buffer, len);
}
/*
Read data from device.
*/
int line6_read_data(struct usb_line6 *line6, int address, void *data, size_t datalen)
{
struct usb_device *usbdev = line6->usbdev;
int ret;
unsigned char len;
/* query the serial number: */
ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
USB_TYPE_VENDOR | USB_RECIP_DEVICE
| USB_DIR_OUT,
(datalen << 8) | 0x21, address,
NULL, 0, LINE6_TIMEOUT * HZ);
if (ret < 0) {
dev_err(line6->ifcdev, "read request failed (error %d)\n", ret);
return ret;
}
/* Wait for data length. We'll get a couple of 0xff until length arrives. */
do {
ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 0x67,
USB_TYPE_VENDOR | USB_RECIP_DEVICE |
USB_DIR_IN,
0x0012, 0x0000, &len, 1,
LINE6_TIMEOUT * HZ);
if (ret < 0) {
dev_err(line6->ifcdev,
"receive length failed (error %d)\n", ret);
return ret;
}
} while (len == 0xff);
if (len != datalen) {
/* should be equal or something went wrong */
dev_err(line6->ifcdev,
"length mismatch (expected %d, got %d)\n",
(int)datalen, (int)len);
return -EINVAL;
}
/* receive the result: */
ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 0x67,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0x0013, 0x0000, data, datalen,
LINE6_TIMEOUT * HZ);
if (ret < 0) {
dev_err(line6->ifcdev, "read failed (error %d)\n", ret);
return ret;
}
return 0;
}
/*
Write data to device.
*/
int line6_write_data(struct usb_line6 *line6, int address, void *data,
size_t datalen)
{
struct usb_device *usbdev = line6->usbdev;
int ret;
unsigned char status;
ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
0x0022, address, data, datalen,
LINE6_TIMEOUT * HZ);
if (ret < 0) {
dev_err(line6->ifcdev,
"write request failed (error %d)\n", ret);
return ret;
}
do {
ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
0x67,
USB_TYPE_VENDOR | USB_RECIP_DEVICE |
USB_DIR_IN,
0x0012, 0x0000,
&status, 1, LINE6_TIMEOUT * HZ);
if (ret < 0) {
dev_err(line6->ifcdev,
"receiving status failed (error %d)\n", ret);
return ret;
}
}
while (status == 0xff)
;
if (status != 0) {
dev_err(line6->ifcdev, "write failed (error %d)\n", ret);
return -EINVAL;
}
return 0;
}
/*
Read Line6 device serial number.
(POD, TonePort, GuitarPort)
*/
int line6_read_serial_number(struct usb_line6 *line6, int *serial_number)
{
return line6_read_data(line6, 0x80d0, serial_number, sizeof(*serial_number));
}
/*
No operation (i.e., unsupported).
*/
ssize_t line6_nop_read(struct device *dev, struct device_attribute *attr,
char *buf)
{
return 0;
}
/*
No operation (i.e., unsupported).
*/
ssize_t line6_nop_write(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
return count;
}
/*
"write" request on "raw" special file.
*/
#if CREATE_RAW_FILE
ssize_t line6_set_raw(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_interface *interface = to_usb_interface(dev);
struct usb_line6 *line6 = usb_get_intfdata(interface);
line6_send_raw_message(line6, buf, count);
return count;
}
#endif
/*
Generic destructor.
*/
static void line6_destruct(struct usb_interface *interface)
{
struct usb_line6 *line6;
if (interface == NULL)
return;
line6 = usb_get_intfdata(interface);
if (line6 == NULL)
return;
/* free buffer memory first: */
kfree(line6->buffer_message);
kfree(line6->buffer_listen);
/* then free URBs: */
usb_free_urb(line6->urb_listen);
/* make sure the device isn't destructed twice: */
usb_set_intfdata(interface, NULL);
/* free interface data: */
kfree(line6);
}
static void line6_list_devices(void)
{
int i;
for (i = 0; i < LINE6_MAX_DEVICES; ++i) {
struct usb_line6 *dev = line6_devices[i];
printk(KERN_INFO "Line6 device %d: ", i);
if (dev == NULL)
printk("(not used)\n");
else
printk("%s:%d\n", dev->properties->name, dev->interface_number);
}
}
/*
Probe USB device.
*/
static int line6_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
int devtype;
struct usb_device *usbdev = NULL;
struct usb_line6 *line6 = NULL;
const struct line6_properties *properties;
int devnum;
int interface_number, alternate = 0;
int product;
int size = 0;
int ep_read = 0, ep_write = 0;
int ret;
if (interface == NULL)
return -ENODEV;
usbdev = interface_to_usbdev(interface);
if (usbdev == NULL)
return -ENODEV;
/* increment reference counters: */
usb_get_intf(interface);
usb_get_dev(usbdev);
/* we don't handle multiple configurations */
if (usbdev->descriptor.bNumConfigurations != 1) {
ret = -ENODEV;
goto err_put;
}
/* check vendor and product id */
for (devtype = ARRAY_SIZE(line6_id_table) - 1; devtype--;) {
u16 idVendor = le16_to_cpu(usbdev->descriptor.idVendor);
u16 idProduct = le16_to_cpu(usbdev->descriptor.idProduct);
if (idVendor == line6_id_table[devtype].idVendor
&& idProduct == line6_id_table[devtype].idProduct)
break;
}
if (devtype < 0) {
ret = -ENODEV;
goto err_put;
}
/* find free slot in device table: */
for (devnum = 0; devnum < LINE6_MAX_DEVICES; ++devnum)
if (line6_devices[devnum] == NULL)
break;
if (devnum == LINE6_MAX_DEVICES) {
ret = -ENODEV;
goto err_put;
}
/* initialize device info: */
properties = &line6_properties_table[devtype];
dev_info(&interface->dev, "Line6 %s found\n", properties->name);
product = le16_to_cpu(usbdev->descriptor.idProduct);
/* query interface number */
interface_number = interface->cur_altsetting->desc.bInterfaceNumber;
switch (product) {
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_POCKETPOD:
case LINE6_DEVID_PODXTLIVE:
case LINE6_DEVID_VARIAX:
alternate = 1;
break;
case LINE6_DEVID_PODX3:
case LINE6_DEVID_PODX3LIVE:
switch (interface_number) {
case 0:
alternate = 1;
break;
case 1:
alternate = 0;
break;
default:
MISSING_CASE;
}
break;
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTPRO:
case LINE6_DEVID_PODXT:
case LINE6_DEVID_PODXTPRO:
alternate = 5;
break;
case LINE6_DEVID_TONEPORT_GX:
case LINE6_DEVID_GUITARPORT:
alternate = 2; /* 1..4 seem to be ok */
break;
case LINE6_DEVID_TONEPORT_UX1:
case LINE6_DEVID_TONEPORT_UX2:
switch (interface_number) {
case 0:
/* defaults to 44.1kHz, 16-bit */
alternate = 2;
break;
case 1:
alternate = 0;
break;
default:
MISSING_CASE;
}
break;
default:
MISSING_CASE;
ret = -ENODEV;
goto err_put;
}
ret = usb_set_interface(usbdev, interface_number, alternate);
if (ret < 0) {
dev_err(&interface->dev, "set_interface failed\n");
goto err_put;
}
/* initialize device data based on product id: */
switch (product) {
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_BASSPODXTPRO:
case LINE6_DEVID_POCKETPOD:
case LINE6_DEVID_PODXT:
case LINE6_DEVID_PODXTPRO:
size = sizeof(struct usb_line6_pod);
ep_read = 0x84;
ep_write = 0x03;
break;
case LINE6_DEVID_PODX3:
case LINE6_DEVID_PODX3LIVE:
/* currently unused! */
size = sizeof(struct usb_line6_pod);
ep_read = 0x81;
ep_write = 0x01;
break;
case LINE6_DEVID_TONEPORT_GX:
case LINE6_DEVID_TONEPORT_UX1:
case LINE6_DEVID_TONEPORT_UX2:
case LINE6_DEVID_GUITARPORT:
size = sizeof(struct usb_line6_toneport);
/* these don't have a control channel */
break;
case LINE6_DEVID_PODXTLIVE:
switch (interface_number) {
case PODXTLIVE_INTERFACE_POD:
size = sizeof(struct usb_line6_pod);
ep_read = 0x84;
ep_write = 0x03;
break;
case PODXTLIVE_INTERFACE_VARIAX:
size = sizeof(struct usb_line6_variax);
ep_read = 0x86;
ep_write = 0x05;
break;
default:
ret = -ENODEV;
goto err_put;
}
break;
case LINE6_DEVID_VARIAX:
size = sizeof(struct usb_line6_variax);
ep_read = 0x82;
ep_write = 0x01;
break;
default:
MISSING_CASE;
ret = -ENODEV;
goto err_put;
}
if (size == 0) {
dev_err(line6->ifcdev, "driver bug: interface data size not set\n");
ret = -ENODEV;
goto err_put;
}
line6 = kzalloc(size, GFP_KERNEL);
if (line6 == NULL) {
dev_err(&interface->dev, "Out of memory\n");
ret = -ENODEV;
goto err_put;
}
/* store basic data: */
line6->interface_number = interface_number;
line6->properties = properties;
line6->usbdev = usbdev;
line6->ifcdev = &interface->dev;
line6->ep_control_read = ep_read;
line6->ep_control_write = ep_write;
line6->product = product;
/* get data from endpoint descriptor (see usb_maxpacket): */
{
struct usb_host_endpoint *ep;
unsigned epnum = usb_pipeendpoint(usb_rcvintpipe(usbdev, ep_read));
ep = usbdev->ep_in[epnum];
if (ep != NULL) {
line6->interval = ep->desc.bInterval;
line6->max_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
} else {
line6->interval = LINE6_FALLBACK_INTERVAL;
line6->max_packet_size = LINE6_FALLBACK_MAXPACKETSIZE;
dev_err(line6->ifcdev, "endpoint not available, using fallback values");
}
}
usb_set_intfdata(interface, line6);
if (properties->capabilities & LINE6_BIT_CONTROL) {
/* initialize USB buffers: */
line6->buffer_listen = kmalloc(LINE6_BUFSIZE_LISTEN, GFP_KERNEL);
if (line6->buffer_listen == NULL) {
dev_err(&interface->dev, "Out of memory\n");
ret = -ENOMEM;
goto err_destruct;
}
line6->buffer_message = kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL);
if (line6->buffer_message == NULL) {
dev_err(&interface->dev, "Out of memory\n");
ret = -ENOMEM;
goto err_destruct;
}
line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL);
if (line6->urb_listen == NULL) {
dev_err(&interface->dev, "Out of memory\n");
line6_destruct(interface);
ret = -ENOMEM;
goto err_destruct;
}
ret = line6_start_listen(line6);
if (ret < 0) {
dev_err(&interface->dev, "%s: usb_submit_urb failed\n",
__func__);
goto err_destruct;
}
}
/* initialize device data based on product id: */
switch (product) {
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_BASSPODXTPRO:
case LINE6_DEVID_POCKETPOD:
case LINE6_DEVID_PODX3:
case LINE6_DEVID_PODX3LIVE:
case LINE6_DEVID_PODXT:
case LINE6_DEVID_PODXTPRO:
ret = pod_init(interface, (struct usb_line6_pod *)line6);
break;
case LINE6_DEVID_PODXTLIVE:
switch (interface_number) {
case PODXTLIVE_INTERFACE_POD:
ret = pod_init(interface, (struct usb_line6_pod *)line6);
break;
case PODXTLIVE_INTERFACE_VARIAX:
ret = variax_init(interface, (struct usb_line6_variax *)line6);
break;
default:
dev_err(&interface->dev,
"PODxt Live interface %d not supported\n",
interface_number);
ret = -ENODEV;
}
break;
case LINE6_DEVID_VARIAX:
ret = variax_init(interface, (struct usb_line6_variax *)line6);
break;
case LINE6_DEVID_TONEPORT_GX:
case LINE6_DEVID_TONEPORT_UX1:
case LINE6_DEVID_TONEPORT_UX2:
case LINE6_DEVID_GUITARPORT:
ret = toneport_init(interface, (struct usb_line6_toneport *)line6);
break;
default:
MISSING_CASE;
ret = -ENODEV;
}
if (ret < 0)
goto err_destruct;
ret = sysfs_create_link(&interface->dev.kobj, &usbdev->dev.kobj,
"usb_device");
if (ret < 0)
goto err_destruct;
dev_info(&interface->dev, "Line6 %s now attached\n",
line6->properties->name);
line6_devices[devnum] = line6;
line6_list_devices();
return 0;
err_destruct:
line6_destruct(interface);
err_put:
usb_put_intf(interface);
usb_put_dev(usbdev);
return ret;
}
/*
Line6 device disconnected.
*/
static void line6_disconnect(struct usb_interface *interface)
{
struct usb_line6 *line6;
struct usb_device *usbdev;
int interface_number, i;
if (interface == NULL)
return;
usbdev = interface_to_usbdev(interface);
if (usbdev == NULL)
return;
sysfs_remove_link(&interface->dev.kobj, "usb_device");
interface_number = interface->cur_altsetting->desc.bInterfaceNumber;
line6 = usb_get_intfdata(interface);
if (line6 != NULL) {
if (line6->urb_listen != NULL)
usb_kill_urb(line6->urb_listen);
if (usbdev != line6->usbdev)
dev_err(line6->ifcdev,
"driver bug: inconsistent usb device\n");
switch (line6->usbdev->descriptor.idProduct) {
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_BASSPODXTPRO:
case LINE6_DEVID_POCKETPOD:
case LINE6_DEVID_PODX3:
case LINE6_DEVID_PODX3LIVE:
case LINE6_DEVID_PODXT:
case LINE6_DEVID_PODXTPRO:
pod_disconnect(interface);
break;
case LINE6_DEVID_PODXTLIVE:
switch (interface_number) {
case PODXTLIVE_INTERFACE_POD:
pod_disconnect(interface);
break;
case PODXTLIVE_INTERFACE_VARIAX:
variax_disconnect(interface);
break;
}
break;
case LINE6_DEVID_VARIAX:
variax_disconnect(interface);
break;
case LINE6_DEVID_TONEPORT_GX:
case LINE6_DEVID_TONEPORT_UX1:
case LINE6_DEVID_TONEPORT_UX2:
case LINE6_DEVID_GUITARPORT:
toneport_disconnect(interface);
break;
default:
MISSING_CASE;
}
dev_info(&interface->dev, "Line6 %s now disconnected\n", line6->properties->name);
for (i = LINE6_MAX_DEVICES; i--;) {
if (line6_devices[i] == line6)
line6_devices[i] = NULL;
}
}
line6_destruct(interface);
/* decrement reference counters: */
usb_put_intf(interface);
usb_put_dev(usbdev);
line6_list_devices();
}
static struct usb_driver line6_driver = {
.name = DRIVER_NAME,
.probe = line6_probe,
.disconnect = line6_disconnect,
.id_table = line6_id_table,
};
/*
Module initialization.
*/
static int __init line6_init(void)
{
int i, retval;
printk(KERN_INFO "%s driver version %s%s\n",
DRIVER_NAME, DRIVER_VERSION, DRIVER_REVISION);
line6_workqueue = create_workqueue(DRIVER_NAME);
if (line6_workqueue == NULL) {
err("couldn't create workqueue");
return -EINVAL;
}
for (i = LINE6_MAX_DEVICES; i--;)
line6_devices[i] = NULL;
retval = usb_register(&line6_driver);
if (retval)
err("usb_register failed. Error number %d", retval);
return retval;
}
/*
Module cleanup.
*/
static void __exit line6_exit(void)
{
destroy_workqueue(line6_workqueue);
usb_deregister(&line6_driver);
}
module_init(line6_init);
module_exit(line6_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);