patch-2.3.51 linux/drivers/usb/usb-serial.c

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diff -u --recursive --new-file v2.3.50/linux/drivers/usb/usb-serial.c linux/drivers/usb/usb-serial.c
@@ -1,2551 +0,0 @@
-/*
- * USB Serial Converter driver
- *
- *	(C) Copyright (C) 1999, 2000
- *	    Greg Kroah-Hartman (greg@kroah.com)
- *
- *	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; either version 2 of the License, or
- *	(at your option) any later version.
- *
- * This driver was originally based on the ACM driver by Armin Fuerst (which was 
- * based on a driver by Brad Keryan)
- *
- * See Documentation/usb/usb-serial.txt for more information on using this driver
- * 
- * (03/06/2000) gkh
- *	Added the keyspan pda code from Brian Warner <warner@lothar.com>
- *	Moved a bunch of the port specific stuff into its own structure. This
- *	is in anticipation of the true multiport devices (there's a bug if you
- *	try to access more than one port of any multiport device right now)
- *
- * (02/21/2000) gkh
- *	Made it so that any serial devices only have to specify which functions
- *	they want to overload from the generic function calls (great, 
- *	inheritance in C, in a driver, just what I wanted...)
- *	Added support for set_termios and ioctl function calls. No drivers take
- *	advantage of this yet.
- *	Removed the #ifdef MODULE, now there is no module specific code.
- *	Cleaned up a few comments in usb-serial.h that were wrong (thanks again
- *	to Miles Lott).
- *	Small fix to get_free_serial.
- *
- * (02/14/2000) gkh
- *	Removed the Belkin and Peracom functionality from the driver due to
- *	the lack of support from the vendor, and me not wanting people to 
- *	accidenatly buy the device, expecting it to work with Linux.
- *	Added read_bulk_callback and write_bulk_callback to the type structure
- *	for the needs of the FTDI and WhiteHEAT driver.
- *	Changed all reverences to FTDI to FTDI_SIO at the request of Bill
- *	Ryder.
- *	Changed the output urb size back to the max endpoint size to make
- *	the ftdi_sio driver have it easier, and due to the fact that it didn't
- *	really increase the speed any.
- *
- * (02/11/2000) gkh
- *	Added VISOR_FUNCTION_CONSOLE to the visor startup function. This was a
- *	patch from Miles Lott (milos@insync.net).
- *	Fixed bug with not restoring the minor range that a device grabs, if
- *	the startup function fails (thanks Miles for finding this).
- *
- * (02/05/2000) gkh
- *	Added initial framework for the Keyspan PDA serial converter so that
- *	Brian Warner has a place to put his code.
- *	Made the ezusb specific functions generic enough that different
- *	devices can use them (whiteheat and keyspan_pda both need them).
- *	Split out a whole bunch of structure and other stuff to a seperate
- *	usb-serial.h file.
- *	Made the Visor connection messages a little more understandable, now
- *	that Miles Lott (milos@insync.net) has gotten the Generic channel to
- *	work. Also made them always show up in the log file.
- * 
- * (01/25/2000) gkh
- *	Added initial framework for FTDI serial converter so that Bill Ryder
- *	has a place to put his code.
- *	Added the vendor specific info from Handspring. Now we can print out
- *	informational debug messages as well as understand what is happening.
- *
- * (01/23/2000) gkh
- *	Fixed problem of crash when trying to open a port that didn't have a
- *	device assigned to it. Made the minor node finding a little smarter,
- *	now it looks to find a continous space for the new device.
- *
- * (01/21/2000) gkh
- *	Fixed bug in visor_startup with patch from Miles Lott (milos@insync.net)
- *	Fixed get_serial_by_minor which was all messed up for multi port 
- *	devices. Fixed multi port problem for generic devices. Now the number
- *	of ports is determined by the number of bulk out endpoints for the
- *	generic device.
- *
- * (01/19/2000) gkh
- *	Removed lots of cruft that was around from the old (pre urb) driver 
- *	interface.
- *	Made the serial_table dynamic. This should save lots of memory when
- *	the number of minor nodes goes up to 256.
- *	Added initial support for devices that have more than one port. 
- *	Added more debugging comments for the Visor, and added a needed 
- *	set_configuration call.
- *
- * (01/17/2000) gkh
- *	Fixed the WhiteHEAT firmware (my processing tool had a bug)
- *	and added new debug loader firmware for it.
- *	Removed the put_char function as it isn't really needed.
- *	Added visor startup commands as found by the Win98 dump.
- * 
- * (01/13/2000) gkh
- *	Fixed the vendor id for the generic driver to the one I meant it to be.
- *
- * (01/12/2000) gkh
- *	Forget the version numbering...that's pretty useless...
- *	Made the driver able to be compiled so that the user can select which
- *	converter they want to use. This allows people who only want the Visor
- *	support to not pay the memory size price of the WhiteHEAT.
- *	Fixed bug where the generic driver (idVendor=0000 and idProduct=0000)
- *	grabbed the root hub. Not good.
- * 
- * version 0.4.0 (01/10/2000) gkh
- *	Added whiteheat.h containing the firmware for the ConnectTech WhiteHEAT
- *	device. Added startup function to allow firmware to be downloaded to
- *	a device if it needs to be.
- *	Added firmware download logic to the WhiteHEAT device.
- *	Started to add #defines to split up the different drivers for potential
- *	configuration option.
- *	
- * version 0.3.1 (12/30/99) gkh
- *      Fixed problems with urb for bulk out.
- *      Added initial support for multiple sets of endpoints. This enables
- *      the Handspring Visor to be attached successfully. Only the first
- *      bulk in / bulk out endpoint pair is being used right now.
- *
- * version 0.3.0 (12/27/99) gkh
- *	Added initial support for the Handspring Visor based on a patch from
- *	Miles Lott (milos@sneety.insync.net)
- *	Cleaned up the code a bunch and converted over to using urbs only.
- *
- * version 0.2.3 (12/21/99) gkh
- *	Added initial support for the Connect Tech WhiteHEAT converter.
- *	Incremented the number of ports in expectation of getting the
- *	WhiteHEAT to work properly (4 ports per connection).
- *	Added notification on insertion and removal of what port the
- *	device is/was connected to (and what kind of device it was).
- *
- * version 0.2.2 (12/16/99) gkh
- *	Changed major number to the new allocated number. We're legal now!
- *
- * version 0.2.1 (12/14/99) gkh
- *	Fixed bug that happens when device node is opened when there isn't a
- *	device attached to it. Thanks to marek@webdesign.no for noticing this.
- *
- * version 0.2.0 (11/10/99) gkh
- *	Split up internals to make it easier to add different types of serial 
- *	converters to the code.
- *	Added a "generic" driver that gets it's vendor and product id
- *	from when the module is loaded. Thanks to David E. Nelson (dnelson@jump.net)
- *	for the idea and sample code (from the usb scanner driver.)
- *	Cleared up any licensing questions by releasing it under the GNU GPL.
- *
- * version 0.1.2 (10/25/99) gkh
- * 	Fixed bug in detecting device.
- *
- * version 0.1.1 (10/05/99) gkh
- * 	Changed the major number to not conflict with anything else.
- *
- * version 0.1 (09/28/99) gkh
- * 	Can recognize the two different devices and start up a read from
- *	device when asked to. Writes also work. No control signals yet, this
- *	all is vendor specific data (i.e. no spec), also no control for
- *	different baud rates or other bit settings.
- *	Currently we are using the same devid as the acm driver. This needs
- *	to change.
- * 
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/malloc.h>
-#include <linux/fcntl.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/tty.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-
-#define DEBUG
-
-#include "usb.h"
-
-#ifdef CONFIG_USB_SERIAL_WHITEHEAT
-#include "whiteheat.h"		/* firmware for the ConnectTech WhiteHEAT device */
-#endif
-
-#ifdef CONFIG_USB_SERIAL_KEYSPAN_PDA
-struct ezusb_hex_record {
-	__u16 address;
-	__u8 data_size;
-	__u8 data[16];
-};
-#include "keyspan_pda_fw.h"
-#endif
-
-#include "usb-serial.h"
-
-/* parity check flag */
-#define RELEVANT_IFLAG(iflag)	(iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
-/* local function prototypes */
-static int  serial_open (struct tty_struct *tty, struct file * filp);
-static void serial_close (struct tty_struct *tty, struct file * filp);
-static int  serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count);
-static int  serial_write_room (struct tty_struct *tty);
-static int  serial_chars_in_buffer (struct tty_struct *tty);
-static void serial_throttle (struct tty_struct * tty);
-static void serial_unthrottle (struct tty_struct * tty);
-static int  serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg);
-static void serial_set_termios (struct tty_struct *tty, struct termios * old);
-
-static void * usb_serial_probe(struct usb_device *dev, unsigned int ifnum);
-static void usb_serial_disconnect(struct usb_device *dev, void *ptr);
-
-static struct usb_driver usb_serial_driver = {
-	"serial",
-	usb_serial_probe,
-	usb_serial_disconnect,
-	{ NULL, NULL }
-};
-
-static int			serial_refcount;
-static struct tty_struct *	serial_tty[SERIAL_TTY_MINORS];
-static struct termios *		serial_termios[SERIAL_TTY_MINORS];
-static struct termios *		serial_termios_locked[SERIAL_TTY_MINORS];
-static struct usb_serial	*serial_table[SERIAL_TTY_MINORS] = {NULL, };
-
-
-
-static struct usb_serial *get_serial_by_minor (int minor)
-{
-	dbg("get_serial_by_minor %d", minor);
-
-	return serial_table[minor];
-}
-
-
-static struct usb_serial *get_free_serial (int num_ports, int *minor)
-{
-	struct usb_serial *serial = NULL;
-	int i, j;
-	int good_spot;
-
-	dbg("get_free_serial %d", num_ports);
-
-	*minor = 0;
-	for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
-		if (serial_table[i])
-			continue;
-
-		good_spot = 1;
-		for (j = 1; j <= num_ports-1; ++j)
-			if (serial_table[i+j])
-				good_spot = 0;
-		if (good_spot == 0)
-			continue;
-			
-		if (!(serial = kmalloc(sizeof(struct usb_serial), GFP_KERNEL))) {
-			err("Out of memory");
-			return NULL;
-		}
-		memset(serial, 0, sizeof(struct usb_serial));
-		serial_table[i] = serial;
-		*minor = i;
-		dbg("minor base = %d", *minor);
-		for (i = *minor+1; (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i)
-			serial_table[i] = serial;
-		return serial;
-		}
-	return NULL;
-}
-
-
-static void return_serial (struct usb_serial *serial)
-{
-	int i;
-
-	dbg("return_serial");
-
-	if (serial == NULL)
-		return;
-
-	for (i = 0; i < serial->num_ports; ++i) {
-		serial_table[serial->minor + i] = NULL;
-	}
-
-	return;
-}
-
-
-#ifdef USES_EZUSB_FUNCTIONS
-/* EZ-USB Control and Status Register.  Bit 0 controls 8051 reset */
-#define CPUCS_REG    0x7F92
-
-static int ezusb_writememory (struct usb_serial *serial, int address, unsigned char *data, int length, __u8 bRequest)
-{
-	int result;
-	unsigned char *transfer_buffer =  kmalloc (length, GFP_KERNEL);
-
-//	dbg("ezusb_writememory %x, %d", address, length);
-
-	if (!transfer_buffer) {
-		err("ezusb_writememory: kmalloc(%d) failed.", length);
-		return -ENOMEM;
-	}
-	memcpy (transfer_buffer, data, length);
-	result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), bRequest, 0x40, address, 0, transfer_buffer, length, 300);
-	kfree (transfer_buffer);
-	return result;
-}
-
-
-static int ezusb_set_reset (struct usb_serial *serial, unsigned char reset_bit)
-{
-	int	response;
-	dbg("ezusb_set_reset: %d", reset_bit);
-	response = ezusb_writememory (serial, CPUCS_REG, &reset_bit, 1, 0xa0);
-	if (response < 0) {
-		err("ezusb_set_reset %d failed", reset_bit);
-	}
-	return response;
-}
-
-#endif	/* USES_EZUSB_FUNCTIONS */
-
-
-/*****************************************************************************
- * Driver tty interface functions
- *****************************************************************************/
-static int serial_open (struct tty_struct *tty, struct file * filp)
-{
-	struct usb_serial *serial;
-	
-	dbg("serial_open");
-
-	/* initialize the pointer incase something fails */
-	tty->driver_data = NULL;
-
-	/* get the serial object associated with this tty pointer */
-	serial = get_serial_by_minor (MINOR(tty->device));
-
-	/* do some sanity checking that we really have a device present */
-	if (!serial) {
-		dbg("serial == NULL!");
-		return (-ENODEV);
-	}
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return (-ENODEV);
-	}
-
-	/* make the tty driver remember our serial object, and us it */
-	tty->driver_data = serial;
-	serial->tty = tty;
-	 
-	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->open) {
-		return (serial->type->open(tty, filp));
-	} else {
-		return (generic_serial_open(tty, filp));
-	}
-}
-
-
-static void serial_close(struct tty_struct *tty, struct file * filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port;	
-
-	dbg("serial_close");
-
-	if (!serial) {
-		dbg("serial == NULL!");
-		return;
-	}
-
-	port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_close port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return;
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not opened");
-		return;
-	}
-
-	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->close) {
-		serial->type->close(tty, filp);
-	} else {
-		generic_serial_close(tty, filp);
-	}
-}	
-
-
-static int serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-	
-	dbg("serial_write port %d, %d byte(s)", port, count);
-
-	/* do some sanity checking that we really have a device present */
-	if (!serial) {
-		dbg("serial == NULL!");
-		return (-ENODEV);
-	}
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return (-ENODEV);
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not opened");
-		return (-EINVAL);
-	}
-	
-	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->write) {
-		return (serial->type->write(tty, from_user, buf, count));
-	} else {
-		return (generic_serial_write(tty, from_user, buf, count));
-	}
-}
-
-
-static int serial_write_room (struct tty_struct *tty) 
-{
-	struct usb_serial *serial = (struct usb_serial *)tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_write_room port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial) {
-		dbg("serial == NULL!");
-		return (-ENODEV);
-	}
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return (-ENODEV);
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not open");
-		return (-EINVAL);
-	}
-	
-	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->write_room) {
-		return (serial->type->write_room(tty));
-	} else {
-		return (generic_write_room(tty));
-	}
-}
-
-
-static int serial_chars_in_buffer (struct tty_struct *tty) 
-{
-	struct usb_serial *serial = (struct usb_serial *)tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_chars_in_buffer port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial) {
-		dbg("serial == NULL!");
-		return (-ENODEV);
-	}
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return (-ENODEV);
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not open");
-		return (-EINVAL);
-	}
-	
-	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->chars_in_buffer) {
-		return (serial->type->chars_in_buffer(tty));
-	} else {
-		return (generic_chars_in_buffer(tty));
-	}
-}
-
-
-static void serial_throttle (struct tty_struct * tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_throttle port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial) {
-		dbg("serial == NULL!");
-		return;
-	}
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return;
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not open");
-		return;
-	}
-
-	/* pass on to the driver specific version of this function */
-	if (serial->type->throttle) {
-		serial->type->throttle(tty);
-	} else {
-		generic_throttle(tty);
-	}
-
-	return;
-}
-
-
-static void serial_unthrottle (struct tty_struct * tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_unthrottle port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial) {
-		dbg("serial == NULL!");
-		return;
-	}
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return;
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not open");
-		return;
-	}
-
-	/* pass on to the driver specific version of this function */
-	if (serial->type->unthrottle) {
-		serial->type->unthrottle(tty);
-	} else {
-		generic_unthrottle(tty);
-	}
-
-	return;
-}
-
-
-static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port;	
-
-	dbg("serial_ioctl");
-
-	if (!serial) {
-		dbg("serial == NULL!");
-		return -ENODEV;
-	}
-
-	port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_ioctl port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return -ENODEV;
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not open");
-		return -ENODEV;
-	}
-
-	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->ioctl) {
-		return (serial->type->ioctl(tty, file, cmd, arg));
-	} else {
-		return (generic_ioctl (tty, file, cmd, arg));
-	}
-}
-
-
-static void serial_set_termios (struct tty_struct *tty, struct termios * old)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port;	
-
-	dbg("serial_set_termios");
-
-	if (!serial) {
-		dbg("serial == NULL!");
-		return;
-	}
-
-	port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_set_termios port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return;
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not open");
-		return;
-	}
-
-	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->set_termios) {
-		serial->type->set_termios(tty, old);
-	} else {
-		generic_set_termios (tty, old);
-	}
-	
-	return;
-}
-
-
-static void serial_break (struct tty_struct *tty, int break_state)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port;	
-
-	if (!serial) {
-		dbg("serial == NULL!");
-		return;
-	}
-
-	port = MINOR(tty->device) - serial->minor;
-
-	dbg("serial_break port %d", port);
-	
-	/* do some sanity checking that we really have a device present */
-	if (!serial->type) {
-		dbg("serial->type == NULL!");
-		return;
-	}
-	if (!serial->port[port].active) {
-		dbg ("device not open");
-		return;
-	}
-
-	/* pass on to the driver specific version of this function if it is
-           available */
-	if (serial->type->break_ctl) {
-		serial->type->break_ctl(tty, break_state);
-	}
-}
-
-
-#ifdef CONFIG_USB_SERIAL_WHITEHEAT
-/*****************************************************************************
- * Connect Tech's White Heat specific driver functions
- *****************************************************************************/
-static int whiteheat_serial_open (struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	dbg("whiteheat_serial_open port %d", portNumber);
-
-	if (port->active) {
-		dbg ("device already open");
-		return -EINVAL;
-	}
-	port->active = 1;
- 
-	/*Start reading from the device*/
-	if (usb_submit_urb(&port->read_urb))
-		dbg("usb_submit_urb(read bulk) failed");
-
-	/* Need to do device specific setup here (control lines, baud rate, etc.) */
-	/* FIXME!!! */
-
-	return (0);
-}
-
-
-static void whiteheat_serial_close(struct tty_struct *tty, struct file * filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	dbg("whiteheat_serial_close port %d", portNumber);
-	
-	/* Need to change the control lines here */
-	/* FIXME */
-	
-	/* shutdown our bulk reads and writes */
-	usb_unlink_urb (&port->write_urb);
-	usb_unlink_urb (&port->read_urb);
-	port->active = 0;
-}
-
-
-static void whiteheat_set_termios (struct tty_struct *tty, struct termios *old_termios)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-	unsigned int cflag = tty->termios->c_cflag;
-
-	dbg("whiteheat_set_termios port %d", port);
-
-	/* check that they really want us to change something */
-	if (old_termios) {
-		if ((cflag == old_termios->c_cflag) &&
-		    (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
-			dbg("nothing to change...");
-			return;
-		}
-	}
-
-	/* do the parsing of the cflag to see what to set the line to */
-	/* FIXME!! */
-
-	return;
-}
-
-static void whiteheat_throttle (struct tty_struct * tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("whiteheat_throttle port %d", port);
-
-	/* Change the control signals */
-	/* FIXME!!! */
-
-	return;
-}
-
-
-static void whiteheat_unthrottle (struct tty_struct * tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("whiteheat_unthrottle port %d", port);
-
-	/* Change the control signals */
-	/* FIXME!!! */
-
-	return;
-}
-
-
-/* steps to download the firmware to the WhiteHEAT device:
- - hold the reset (by writing to the reset bit of the CPUCS register)
- - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD
- - release the reset (by writing to the CPUCS register)
- - download the WH.HEX file for all addresses greater than 0x1b3f using
-   VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD
- - hold the reset
- - download the WH.HEX file for all addresses less than 0x1b40 using
-   VENDOR_REQUEST_ANCHOR_LOAD
- - release the reset
- - device renumerated itself and comes up as new device id with all
-   firmware download completed.
-*/
-static int  whiteheat_startup (struct usb_serial *serial)
-{
-	int response;
-	const struct whiteheat_hex_record *record;
-	
-	dbg("whiteheat_startup");
-	
-	response = ezusb_set_reset (serial, 1);
-
-	record = &whiteheat_loader[0];
-	while (record->address != 0xffff) {
-		response = ezusb_writememory (serial, record->address, 
-				(unsigned char *)record->data, record->data_size, 0xa0);
-		if (response < 0) {
-			err("ezusb_writememory failed for loader (%d %04X %p %d)", 
-				response, record->address, record->data, record->data_size);
-			break;
-		}
-		++record;
-	}
-
-	response = ezusb_set_reset (serial, 0);
-
-	record = &whiteheat_firmware[0];
-	while (record->address < 0x1b40) {
-		++record;
-	}
-	while (record->address != 0xffff) {
-		response = ezusb_writememory (serial, record->address, 
-				(unsigned char *)record->data, record->data_size, 0xa0);
-		if (response < 0) {
-			err("ezusb_writememory failed for first firmware step (%d %04X %p %d)", 
-				response, record->address, record->data, record->data_size);
-			break;
-		}
-		++record;
-	}
-	
-	response = ezusb_set_reset (serial, 1);
-
-	record = &whiteheat_firmware[0];
-	while (record->address < 0x1b40) {
-		response = ezusb_writememory (serial, record->address, 
-				(unsigned char *)record->data, record->data_size, 0xa0);
-		if (response < 0) {
-			err("ezusb_writememory failed for second firmware step (%d %04X %p %d)", 
-				response, record->address, record->data, record->data_size);
-			break;
-		}
-		++record;
-	}
-
-	response = ezusb_set_reset (serial, 0);
-
-	/* we want this device to fail to have a driver assigned to it. */
-	return (1);
-}
-#endif	/* CONFIG_USB_SERIAL_WHITEHEAT */
-
-
-#ifdef CONFIG_USB_SERIAL_VISOR
-/******************************************************************************
- * Handspring Visor specific driver functions
- ******************************************************************************/
-static int visor_serial_open (struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	dbg("visor_serial_open port %d", portNumber);
-
-	if (port->active) {
-		dbg ("device already open");
-		return -EINVAL;
-	}
-
-	port->active = 1;
-
-	/*Start reading from the device*/
-	if (usb_submit_urb(&port->read_urb))
-		dbg("usb_submit_urb(read bulk) failed");
-
-	return (0);
-}
-
-static void visor_serial_close(struct tty_struct *tty, struct file * filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-	unsigned char *transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
-	
-	dbg("visor_serial_close port %d", portNumber);
-			 
-	if (!transfer_buffer) {
-		err("visor_serial_close: kmalloc(%d) failed.", 0x12);
-	} else {
-		/* send a shutdown message to the device */
-		usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_CLOSE_NOTIFICATION,
-				0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300);
-	}
-
-	/* shutdown our bulk reads and writes */
-	usb_unlink_urb (&port->write_urb);
-	usb_unlink_urb (&port->read_urb);
-	port->active = 0;
-}
-
-
-static void visor_throttle (struct tty_struct * tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("visor_throttle port %d", port);
-
-	usb_unlink_urb (&serial->port[port].read_urb);
-
-	return;
-}
-
-
-static void visor_unthrottle (struct tty_struct * tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
-	int port = MINOR(tty->device) - serial->minor;
-
-	dbg("visor_unthrottle port %d", port);
-
-	if (usb_unlink_urb (&serial->port[port].read_urb))
-		dbg("usb_submit_urb(read bulk) failed");
-
-	return;
-}
-
-
-static int  visor_startup (struct usb_serial *serial)
-{
-	int response;
-	int i;
-	unsigned char *transfer_buffer =  kmalloc (256, GFP_KERNEL);
-
-	if (!transfer_buffer) {
-		err("visor_startup: kmalloc(%d) failed.", 256);
-		return -ENOMEM;
-	}
-
-	dbg("visor_startup");
-
-	dbg("visor_setup: Set config to 1");
-	usb_set_configuration (serial->dev, 1);
-
-	/* send a get connection info request */
-	response = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_GET_CONNECTION_INFORMATION,
-					0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300);
-	if (response < 0) {
-		err("visor_startup: error getting connection information");
-	} else {
-		struct visor_connection_info *connection_info = (struct visor_connection_info *)transfer_buffer;
-		char *string;
-		info("%s: Number of ports: %d", serial->type->name, connection_info->num_ports);
-		for (i = 0; i < connection_info->num_ports; ++i) {
-			switch (connection_info->connections[i].port_function_id) {
-				case VISOR_FUNCTION_GENERIC:
-					string = "Generic";
-					break;
-				case VISOR_FUNCTION_DEBUGGER:
-					string = "Debugger";
-					break;
-				case VISOR_FUNCTION_HOTSYNC:
-					string = "HotSync";
-					break;
-				case VISOR_FUNCTION_CONSOLE:
-					string = "Console";
-					break;
-				case VISOR_FUNCTION_REMOTE_FILE_SYS:
-					string = "Remote File System";
-					break;
-				default:
-					string = "unknown";
-					break;	
-			}
-			info("%s: port %d, is for %s use and is bound to ttyUSB%d", serial->type->name, connection_info->connections[i].port, string, serial->minor + i);
-		}
-	}
-
-	/* ask for the number of bytes available, but ignore the response as it is broken */
-	response = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_REQUEST_BYTES_AVAILABLE,
-					0xc2, 0x0000, 0x0005, transfer_buffer, 0x02, 300);
-	if (response < 0) {
-		err("visor_startup: error getting bytes available request");
-	}
-
-	kfree (transfer_buffer);
-
-	/* continue on with initialization */
-	return (0);
-}
-
-
-#endif	/* CONFIG_USB_SERIAL_VISOR*/
-
-
-#ifdef CONFIG_USB_SERIAL_FTDI_SIO
-/******************************************************************************
- * FTDI SIO Serial Converter specific driver functions
- ******************************************************************************/
-
-/* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
-/* Thanx to FTDI for so kindly providing details of the protocol required */
-/*   to talk to the device */
-
-#include "ftdi_sio.h"
-
-static int  ftdi_sio_serial_open (struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-	char buf[1]; /* Needed for the usb_control_msg I think */
-
-	dbg("ftdi_sio_serial_open port %d", portNumber);
-
-	if (port->active) {
-		dbg ("device already open");
-		return -EINVAL;
-	}
-	port->active = 1;
-
-	usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, 
-			FTDI_SIO_RESET_SIO, 
-			0, buf, 0, HZ * 5);
-
-	/* FIXME - Should I really purge the buffers? */
-	usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, 
-			FTDI_SIO_RESET_PURGE_RX, 
-			0, buf, 0, HZ * 5);
-
-	usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, 
-			FTDI_SIO_RESET_PURGE_TX, 
-			0, buf, 0, HZ * 5);	
-
-
-	/* As per usb_serial_init s/be CS8, B9600, 1 STOP BIT */
-	if ( usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			     FTDI_SIO_SET_BAUDRATE_REQUEST,
-			     FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
-			     ftdi_sio_b9600, 0, 
-			     buf, 0, HZ * 5) < 0){
-		dbg("Error from baudrate urb");
-		return(-EINVAL);
-	}
-
-	if ( usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			     FTDI_SIO_SET_DATA_REQUEST, 
-			     FTDI_SIO_SET_DATA_REQUEST_TYPE,
-			     8 | FTDI_SIO_SET_DATA_PARITY_NONE | 
-			     FTDI_SIO_SET_DATA_STOP_BITS_1, 0,
-			     buf, 0, HZ * 5) < 0){
-		dbg("Error from cs8/noparity/1 stopbit urb");
-		return(-EINVAL);
-	}
-
-	/* Disable flow control */
-	if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    FTDI_SIO_SET_FLOW_CTRL_REQUEST, 
-			    FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
-			    0, 0, 
-			    buf, 0, HZ * 5) < 0) {
-		dbg("error from flowcontrol urb");
-		return(-EINVAL);
-	}	    
-
-	/* Turn on RTS and DTR since we are not flow controlling*/
-	/* FIXME - check for correct behaviour clocal vs non clocal */
-	/* FIXME - might be able to do both simultaneously */
-	if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST, 
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
-			    (unsigned)FTDI_SIO_SET_DTR_HIGH, 0, 
-			    buf, 0, HZ * 5) < 0) {
-		dbg("Error from DTR HIGH urb");
-	}
-	if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST, 
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
-			    (unsigned)FTDI_SIO_SET_RTS_HIGH, 0, 
-			    buf, 0, HZ * 5) < 0) {
-		dbg("Error from RTS HIGH urb");
-	}
-	
-	/*Start reading from the device*/
-	if (usb_submit_urb(&port->read_urb))
-		dbg("usb_submit_urb(read bulk) failed");
-
-	return (0);
-}
-
-
-static void ftdi_sio_serial_close (struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-	char buf[1];
-
-	dbg("ftdi_sio_serial_close port %d", portNumber);
-	
-	/* FIXME - might be able to do both simultaneously */
-	if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST, 
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
-			    (unsigned)FTDI_SIO_SET_DTR_LOW, 0, 
-			    buf, 0, HZ * 5) < 0) {
-		dbg("Error from DTR LOW urb");
-	}
-	if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST, 
-			    FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
-			    (unsigned)FTDI_SIO_SET_RTS_LOW, 0, 
-			    buf, 0, HZ * 5) < 0) {
-		dbg("Error from RTS LOW urb");
-	}	
-
-	/* FIXME Should I flush the device here? - not doing it for now */
-
-	/* shutdown our bulk reads and writes */
-	usb_unlink_urb (&port->write_urb);
-	usb_unlink_urb (&port->read_urb);
-	port->active = 0;
-}
-
-
-  
-/* The ftdi_sio requires the first byte to have:
-   B0 1
-   B1 0
-   B2..7 length of message excluding byte 0
-*/
-static int ftdi_sio_serial_write (struct tty_struct * tty, int from_user, 
-				  const unsigned char *buf, int count)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-	const int data_offset = 1;
-
-	dbg("ftdi_sio_serial_write port %d, %d bytes", portNumber, count);
-
-	if (count == 0) {
-		dbg("write request of 0 bytes");
-		return 0;
-	}
-
-	/* only do something if we have a bulk out endpoint */
-	if (serial->num_bulk_out) {
-		unsigned char *first_byte = port->write_urb.transfer_buffer;
-
-		if (port->write_urb.status == -EINPROGRESS) {
-			dbg ("already writing");
-			return 0;
-		}
-
-		count += data_offset;
-		count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
-		if (count == 0) {
-			return 0;
-		}
-
-		/* Copy in the data to send */
-		if (from_user) {
-			copy_from_user(port->write_urb.transfer_buffer + data_offset , 
-				       buf, count - data_offset );
-		}
-		else {
-			memcpy(port->write_urb.transfer_buffer + data_offset,
-			       buf, count - data_offset );
-		}  
-
-		/* Write the control byte at the front of the packet*/
-		first_byte = port->write_urb.transfer_buffer;
-		*first_byte = 1 | ((count-data_offset) << 2) ; 
-
-#ifdef DEBUG
-		dbg("Bytes: %d, Control Byte: 0o%03o",count, first_byte[0]);
-
-		if (count) {
-			int i;
-			printk (KERN_DEBUG __FILE__ ": data written - length = %d, data = ", count);
-			for (i = 0; i < count; ++i) {
-				printk ("0x%02x ", first_byte[i]);
-				if (first_byte[i] > ' ' && first_byte[i] < '~') {
-					printk("%c ", first_byte[i]);
-				} else {
-					printk("  ");
-				}
-			}
-
-		     
-			printk ("\n");
-		}
-
-#endif
-		/* send the data out the bulk port */
-		port->write_urb.transfer_buffer_length = count;
-
-		if (usb_submit_urb(&port->write_urb))
-			dbg("usb_submit_urb(write bulk) failed");
-
-		dbg("write returning: %d", count - data_offset);
-		return (count - data_offset);
-	}
-	
-	/* no bulk out, so return 0 bytes written */
-	return 0;
-} 
-
-
-static void ftdi_sio_read_bulk_callback (struct urb *urb)
-{ /* ftdi_sio_serial_buld_callback */
-	struct usb_serial *serial = (struct usb_serial *)urb->context;
-       	struct tty_struct *tty = serial->tty; 
-       	unsigned char *data = urb->transfer_buffer;
-	const int data_offset = 2;
-	int i;
-
-	dbg("ftdi_sio_read_bulk_callback");
-
-	if (urb->status) {
-		dbg("nonzero read bulk status received: %d", urb->status);
-		return;
-	}
-
-#ifdef DEBUG
-	if (urb->actual_length > 2) {
-		printk (KERN_DEBUG __FILE__ ": data read - length = %d, data = ", urb->actual_length);
-		for (i = 0; i < urb->actual_length; ++i) {
-			printk ("0x%.2x ", data[i]);
-			if (data[i] > ' ' && data[i] < '~') {
-				printk("%c ", data[i]);
-			} else {
-				printk("  ");
-			}
-		}
-		printk ("\n");
-	}
-#endif
-	
-
-	if (urb->actual_length > data_offset) {
-		for (i = data_offset ; i < urb->actual_length ; ++i) {
-			tty_insert_flip_char(tty, data[i], 0);
-	  	}
-	  	tty_flip_buffer_push(tty);
-	}
-
-	/* Continue trying to always read  */
-	if (usb_submit_urb(urb))
-		dbg("failed resubmitting read urb");
-
-	return;
-} /* ftdi_sio_serial_read_bulk_callback */
-
-
-static void ftdi_sio_set_termios (struct tty_struct *tty, struct termios *old_termios)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-	unsigned int cflag = tty->termios->c_cflag;
-	__u16 urb_value; /* Will hold the new flags */
-	char buf[1]; /* Perhaps I should dynamically alloc this? */
-	dbg("ftdi_sio_set_termios port %d", port);
-
-	/* FIXME - we should keep the old termios really */
-	/* FIXME -For this cut I don't care if the line is really changing or 
-	   not  - so just do the change regardless */
-	
-	/* Set number of data bits, parity, stop bits */
-	
-	urb_value = 0;
-	urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
-		      FTDI_SIO_SET_DATA_STOP_BITS_1);
-	urb_value |= (cflag & PARENB ? 
-		      (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD : 
-		       FTDI_SIO_SET_DATA_PARITY_EVEN) :
-		      FTDI_SIO_SET_DATA_PARITY_NONE);
-	if (cflag & CSIZE) {
-		switch (cflag & CSIZE) {
-		case CS5: urb_value |= 5; dbg("Setting CS5"); break;
-		case CS6: urb_value |= 6; dbg("Setting CS6"); break;
-		case CS7: urb_value |= 7; dbg("Setting CS7"); break;
-		case CS8: urb_value |= 8; dbg("Setting CS8"); break;
-		default:
-			dbg("CSIZE was set but not CS5-CS8");
-		}
-	}
-	if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    FTDI_SIO_SET_DATA_REQUEST, 
-			    FTDI_SIO_SET_DATA_REQUEST_TYPE,
-			    urb_value , 0,
-			    buf, 0, 100) < 0) {
-		dbg("FAILED to set databits/stopbits/parity");
-	}	   
-
-	/* Now do the baudrate */
-	/* FIXME - should drop lines on B0 */
-	/* FIXME Should also handle CLOCAL here  */
-     
-	switch(cflag & CBAUD){
-	case B300: urb_value = ftdi_sio_b300; dbg("Set to 300"); break;
-	case B600: urb_value = ftdi_sio_b600; dbg("Set to 600") ; break;
-	case B1200: urb_value = ftdi_sio_b1200; dbg("Set to 1200") ; break;
-	case B2400: urb_value = ftdi_sio_b2400; dbg("Set to 2400") ; break;
-	case B4800: urb_value = ftdi_sio_b4800; dbg("Set to 4800") ; break;
-	case B9600: urb_value = ftdi_sio_b9600; dbg("Set to 9600") ; break;
-	case B19200: urb_value = ftdi_sio_b19200; dbg("Set to 19200") ; break;
-	case B38400: urb_value = ftdi_sio_b38400; dbg("Set to 38400") ; break;
-	case B57600: urb_value = ftdi_sio_b57600; dbg("Set to 57600") ; break;
-	case B115200: urb_value = ftdi_sio_b115200; dbg("Set to 115200") ; break;
-	default: dbg("FTDI_SIO does not support the baudrate requested"); 
-		/* FIXME - how to return an error for this? */ break;
-	}
-	/* Send the URB */
-	if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    FTDI_SIO_SET_BAUDRATE_REQUEST, 
-			    FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
-			    urb_value, 0, 
-			    buf, 0, 100) < 0) {
-		dbg("urb failed to set baurdrate");
-	}
-	return;
-}
-
-
-/*FIXME - the beginnings of this implementation - not even hooked into the driver yet */
-static int ftdi_sio_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-	__u16 urb_value=0; /* Will hold the new flags */
-	char buf[1];
-	int  ret, mask;
-	dbg("ftdi_sio_ioctl port %d", port);
-
-	/* Based on code from acm.c */
-	switch (cmd) {
-
-		case TIOCMGET:
-			/* Request the status from the device */
-			if ((ret = usb_control_msg(serial->dev, 
-					    usb_sndctrlpipe(serial->dev, 0),
-					    FTDI_SIO_GET_MODEM_STATUS_REQUEST, 
-					    FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
-					    0, 0, 
-					    buf, 1, HZ * 5)) < 0 ) {
-				dbg("Get not get modem status of device");
-				return(ret);
-			}
-
-			return put_user((buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
-					(buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
-					(buf[0]  & FTDI_SIO_RI_MASK  ? TIOCM_RI  : 0) |
-					(buf[0]  & FTDI_SIO_RLSD_MASK ? TIOCM_CD  : 0),
-					(unsigned long *) arg);
-			break;
-
-		case TIOCMSET:
-		case TIOCMBIS:
-		case TIOCMBIC:
-			if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
-
-			/* FIXME Need to remember if we have set DTR or RTS since we
-			   can't ask the device  */
-			/* FIXME - also need to find the meaning of TIOCMBIS/BIC/SET */
-			if (mask & TIOCM_DTR) {
-				switch(cmd) {
-				case TIOCMSET:
-					urb_value = FTDI_SIO_SET_DTR_HIGH | FTDI_SIO_SET_RTS_LOW;
-					break;
-
-				case TIOCMBIS:
-					/* Will leave RTS alone and set DTR */
-					urb_value =  FTDI_SIO_SET_DTR_HIGH;
-					break;
-					
-				case TIOCMBIC:
-					urb_value = FTDI_SIO_SET_DTR_LOW;
-					break;
-				}
-			}
-
-			if (mask & TIOCM_RTS) {
-				switch(cmd) {
-				case TIOCMSET:
-					urb_value = FTDI_SIO_SET_DTR_LOW | FTDI_SIO_SET_RTS_HIGH;
-					break;
-
-				case TIOCMBIS:
-					/* Will leave DTR and set RTS */
-					urb_value = FTDI_SIO_SET_RTS_HIGH;
-					break;
-
-				case TIOCMBIC:
-					/* Will unset RTS */
-					urb_value = FTDI_SIO_SET_RTS_LOW;
-					break;
-				}
-			}	
-
-			
-			return(usb_control_msg(serial->dev, 
-					       usb_sndctrlpipe(serial->dev, 0),
-					       FTDI_SIO_SET_MODEM_CTRL_REQUEST, 
-					       FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
-					       urb_value , 0,
-					       buf, 0, HZ * 5));
-	}
-
-	return -ENOIOCTLCMD;
-}
-
-#endif	/* CONFIG_USB_SERIAL_FTDI_SIO */
-
-
-#ifdef CONFIG_USB_SERIAL_KEYSPAN_PDA
-/*****************************************************************************
- * Keyspan PDA specific driver functions
- *****************************************************************************/
-
-static void keyspan_pda_rx_interrupt (struct urb *urb)
-{
-	struct usb_serial *serial = (struct usb_serial *) urb->context;
-	struct tty_struct *tty = serial->tty;
-	unsigned char *data = urb->transfer_buffer;
-	int i;
-
-	/* the urb might have been killed. */
-	if (urb->status)
-		return;
-	
-	/* see if the message is data or a status interrupt */
-	switch (data[0]) {
-	case 0:
-		/* rest of message is rx data */
-		if (urb->actual_length) {
-			for (i = 1; i < urb->actual_length ; ++i) {
-				tty_insert_flip_char(tty, data[i], 0);
-			}
-			tty_flip_buffer_push(tty);
-		}
-		break;
-	case 1:
-		/* status interrupt */
-		dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
-		switch (data[1]) {
-		case 1: /* modemline change */
-			break;
-		case 2: /* tx unthrottle interrupt */
-			serial->tx_throttled = 0;
-			wake_up(&serial->write_wait); /* wake up writer */
-			break;
-		default:
-			break;
-		}
-		break;
-	default:
-		break;
-	}
-
-	/* INT urbs are automatically re-submitted */
-}
-
-
-static void keyspan_pda_rx_throttle (struct tty_struct *tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	/* stop receiving characters. We just turn off the URB request, and
-	   let chars pile up in the device. If we're doing hardware
-	   flowcontrol, the device will signal the other end when its buffer
-	   fills up. If we're doing XON/XOFF, this would be a good time to
-	   send an XOFF, although it might make sense to foist that off
-	   upon the device too. */
-
-	dbg("keyspan_pda_rx_throttle port %d", port);
-	usb_unlink_urb(&serial->port[port].read_urb);
-}
-
-
-static void keyspan_pda_rx_unthrottle (struct tty_struct *tty)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-
-	/* just restart the receive interrupt URB */
-	dbg("keyspan_pda_rx_unthrottle port %d", port);
-	if (usb_submit_urb(&serial->port[port].read_urb))
-		dbg(" usb_submit_urb(read urb) failed");
-	return;
-}
-
-
-static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
-{
-	int rc;
-	int bindex;
-
-	switch(baud) {
-		case 110: bindex = 0; break;
-		case 300: bindex = 1; break;
-		case 1200: bindex = 2; break;
-		case 2400: bindex = 3; break;
-		case 4800: bindex = 4; break;
-		case 9600: bindex = 5; break;
-		case 19200: bindex = 6; break;
-		case 38400: bindex = 7; break;
-		case 57600: bindex = 8; break;
-		case 115200: bindex = 9; break;
-		default: return -EINVAL;
-	}
-
-	/* rather than figure out how to sleep while waiting for this
-	   to complete, I just use the "legacy" API. */
-	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			     0, /* set baud */
-			     USB_TYPE_VENDOR 
-			     | USB_RECIP_INTERFACE
-			     | USB_DIR_OUT, /* type */
-			     bindex, /* value */
-			     0, /* index */
-			     NULL, /* &data */
-			     0, /* size */
-			     2*HZ); /* timeout */
-	return(rc);
-}
-
-
-static void keyspan_pda_break_ctl (struct tty_struct *tty, int break_state)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
-	int value;
-	if (break_state == -1)
-		value = 1; /* start break */
-	else
-		value = 0; /* clear break */
-	usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			4, /* set break */
-			USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
-			value, 0, NULL, 0, 2*HZ);
-	/* there is something funky about this.. the TCSBRK that 'cu' performs
-	   ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
-	   seconds apart, but it feels like the break sent isn't as long as it
-	   is on /dev/ttyS0 */
-}
-
-
-static void keyspan_pda_set_termios (struct tty_struct *tty,
-				     struct termios *old_termios)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	unsigned int cflag = tty->termios->c_cflag;
-
-	/* cflag specifies lots of stuff: number of stop bits, parity, number
-	   of data bits, baud. What can the device actually handle?:
-	   CSTOPB (1 stop bit or 2)
-	   PARENB (parity)
-	   CSIZE (5bit .. 8bit)
-	   There is minimal hw support for parity (a PSW bit seems to hold the
-	   parity of whatever is in the accumulator). The UART either deals
-	   with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
-	   1 special, stop). So, with firmware changes, we could do:
-	   8N1: 10 bit
-	   8N2: 11 bit, extra bit always (mark?)
-	   8[EOMS]1: 11 bit, extra bit is parity
-	   7[EOMS]1: 10 bit, b0/b7 is parity
-	   7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
-
-	   HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
-	   bit.
-
-	   For now, just do baud. */
-
-	switch (cflag & CBAUD) {
-		/* we could support more values here, just need to calculate
-		   the necessary divisors in the firmware. <asm/termbits.h>
-		   has the Bnnn constants. */
-		case B110: keyspan_pda_setbaud(serial, 110); break;
-		case B300: keyspan_pda_setbaud(serial, 300); break;
-		case B1200: keyspan_pda_setbaud(serial, 1200); break;
-		case B2400: keyspan_pda_setbaud(serial, 2400); break;
-		case B4800: keyspan_pda_setbaud(serial, 4800); break;
-		case B9600: keyspan_pda_setbaud(serial, 9600); break;
-		case B19200: keyspan_pda_setbaud(serial, 19200); break;
-		case B38400: keyspan_pda_setbaud(serial, 38400); break;
-		case B57600: keyspan_pda_setbaud(serial, 57600); break;
-		case B115200: keyspan_pda_setbaud(serial, 115200); break;
-		default: dbg("can't handle requested baud rate"); break;
-	}
-}
-
-
-/* modem control pins: DTR and RTS are outputs and can be controlled.
-   DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
-   read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
-
-static int keyspan_pda_get_modem_info(struct usb_serial *serial,
-				      unsigned char *value)
-{
-	int rc;
-	unsigned char data;
-	rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
-			     3, /* get pins */
-			     USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
-			     0, 0, &data, 1, 2*HZ);
-	if (rc > 0)
-		*value = data;
-	return rc;
-}
-
-
-static int keyspan_pda_set_modem_info(struct usb_serial *serial,
-				      unsigned char value)
-{
-	int rc;
-	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			     3, /* set pins */
-			     USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
-			     value, 0, NULL, 0, 2*HZ);
-	return rc;
-}
-
-
-static int keyspan_pda_ioctl(struct tty_struct *tty, struct file *file,
-			     unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
-	int rc;
-	unsigned int value;
-	unsigned char status, mask;
-
-	switch (cmd) {
-	case TIOCMGET: /* get modem pins state */
-		rc = keyspan_pda_get_modem_info(serial, &status);
-		if (rc < 0)
-			return rc;
-		value =
-			((status & (1<<7)) ? TIOCM_DTR : 0) |
-			((status & (1<<6)) ? TIOCM_CAR : 0) |
-			((status & (1<<5)) ? TIOCM_RNG : 0) |
-			((status & (1<<4)) ? TIOCM_DSR : 0) |
-			((status & (1<<3)) ? TIOCM_CTS : 0) |
-			((status & (1<<2)) ? TIOCM_RTS : 0);
-		if (copy_to_user((unsigned int *)arg, &value, sizeof(int)))
-			return -EFAULT;
-		return 0;
-	case TIOCMSET: /* set a state as returned by MGET */
-		if (copy_from_user(&value, (unsigned int *)arg, sizeof(int)))
-			return -EFAULT;
-		status =
-			((value & TIOCM_DTR) ? (1<<7) : 0) |
-			((value & TIOCM_CAR) ? (1<<6) : 0) |
-			((value & TIOCM_RNG) ? (1<<5) : 0) |
-			((value & TIOCM_DSR) ? (1<<4) : 0) |
-			((value & TIOCM_CTS) ? (1<<3) : 0) |
-			((value & TIOCM_RTS) ? (1<<2) : 0);
-		rc = keyspan_pda_set_modem_info(serial, status);
-		if (rc < 0)
-			return rc;
-		return 0;
-	case TIOCMBIS: /* set bits in bitmask <arg> */
-	case TIOCMBIC: /* clear bits from bitmask <arg> */
-		if (copy_from_user(&value, (unsigned int *)arg, sizeof(int)))
-			return -EFAULT;
-		rc = keyspan_pda_get_modem_info(serial, &status);
-		if (rc < 0)
-			return rc;
-		mask =
-			((value & TIOCM_RTS) ? (1<<2) : 0) |
-			((value & TIOCM_DTR) ? (1<<7) : 0);
-		if (cmd == TIOCMBIS)
-			status |= mask;
-		else
-			status &= ~mask;
-		rc = keyspan_pda_set_modem_info(serial, status);
-		if (rc < 0)
-			return rc;
-		return 0;
-	case TIOCMIWAIT:
-		/* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
-		/* TODO */
-	case TIOCGICOUNT:
-		/* return count of modemline transitions */
-		return 0; /* TODO */
-	}
-	
-	return -ENOIOCTLCMD;
-}
-
-static int keyspan_pda_write(struct tty_struct * tty, int from_user, 
-			     const unsigned char *buf, int count)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int port = MINOR(tty->device) - serial->minor;
-	int request_unthrottle = 0;
-	int rc = 0;
-	DECLARE_WAITQUEUE(wait, current);
-
-	/* guess how much room is left in the device's ring buffer, and if we
-	   want to send more than that, check first, updating our notion of
-	   what is left. If our write will result in no room left, ask the
-	   device to give us an interrupt when the room available rises above
-	   a threshold, and hold off all writers (eventually, those using
-	   select() or poll() too) until we receive that unthrottle interrupt.
-	   Block if we can't write anything at all, otherwise write as much as
-	   we can. */
-
-	if (count == 0) {
-		dbg(" write request of 0 bytes");
-		return (0);
-	}
-
-	/* we might block because of:
-	   the TX urb is in-flight (wait until it completes)
-	   the device is full (wait until it says there is room)
-	*/
-	while (serial->port[port].write_urb.status == -EINPROGRESS) {
-		if (0 /* file->f_flags & O_NONBLOCK */) {
-			rc = -EAGAIN;
-			goto err;
-		}
-		interruptible_sleep_on(&serial->write_wait);
-		if (signal_pending(current)) {
-			rc = -ERESTARTSYS;
-			goto err;
-		}
-	}
-
-	/* at this point the URB is in our control, nobody else can submit it
-	   again (the only sudden transition was the one from EINPROGRESS to
-	   finished) */
-
-	/* the next potential block is that our TX process might be throttled.
-	   The transition from throttled->not happens because of an Rx
-	   interrupt, and the wake_up occurs during the same interrupt, so we
-	   have to be careful to avoid a race that would cause us to sleep
-	   forever. */
-
-	add_wait_queue(&serial->write_wait, &wait);
-	set_current_state(TASK_INTERRUPTIBLE);
-	while (serial->tx_throttled) {
-		/* device can't accomodate any more characters. Sleep until it
-		   can. Woken up by an Rx interrupt message, which clears
-		   tx_throttled first. */
-		dbg(" tx_throttled, going to sleep");
-		if (signal_pending(current)) {
-			current->state = TASK_RUNNING;
-			remove_wait_queue(&serial->write_wait, &wait);
-			dbg(" woke up because of signal");
-			rc = -ERESTARTSYS;
-			goto err;
-		}
-		schedule();
-		dbg(" woke up");
-	}
-	remove_wait_queue(&serial->write_wait, &wait);
-	set_current_state(TASK_RUNNING);
-
-	count = (count > serial->port[port].bulk_out_size) ? 
-		serial->port[port].bulk_out_size : count;
-	if (count > serial->tx_room) {
-		unsigned char room;
-		/* Looks like we might overrun the Tx buffer. Ask the device
-		   how much room it really has */
-		rc = usb_control_msg(serial->dev, 
-				     usb_rcvctrlpipe(serial->dev, 0),
-				     6, /* write_room */
-				     USB_TYPE_VENDOR | USB_RECIP_INTERFACE
-				     | USB_DIR_IN,
-				     0, /* value: 0 means "remaining room" */
-				     0, /* index */
-				     &room,
-				     1,
-				     2*HZ);
-		if (rc < 0) {
-			dbg(" roomquery failed");
-			return rc; /* failed */
-		}
-		if (rc == 0) {
-			dbg(" roomquery returned 0 bytes");
-			return -EIO; /* device didn't return any data */
-		}
-		dbg(" roomquery says %d", room);
-		serial->tx_room = room;
-		if (count > serial->tx_room) {
-			/* we're about to completely fill the Tx buffer, so
-			   we'll be throttled afterwards. */
-			count = serial->tx_room;
-			request_unthrottle = 1;
-		}
-	}
-	serial->tx_room -= count;
-
-	if (count) {
-		/* now transfer data */
-		if (from_user) {
-			copy_from_user(serial->port[port].write_urb.transfer_buffer,
-				       buf, count);
-		}
-		else {
-			memcpy (serial->port[port].write_urb.transfer_buffer, 
-				buf, count);
-		}  
-		/* send the data out the bulk port */
-		serial->port[port].write_urb.transfer_buffer_length = count;
-		
-		if (usb_submit_urb(&serial->port[port].write_urb))
-			dbg(" usb_submit_urb(write bulk) failed");
-	}
-	else {
-		/* There wasn't any room left, so we are throttled until
-		   the buffer empties a bit */
-		request_unthrottle = 1;
-	}
-
-	if (request_unthrottle) {
-		dbg(" request_unthrottle");
-		/* ask the device to tell us when the tx buffer becomes
-		   sufficiently empty */
-		serial->tx_throttled = 1; /* block writers */
-		rc = usb_control_msg(serial->dev, 
-				     usb_sndctrlpipe(serial->dev, 0),
-				     7, /* request_unthrottle */
-				     USB_TYPE_VENDOR | USB_RECIP_INTERFACE
-				     | USB_DIR_OUT,
-				     16, /* value: threshold */
-				     0, /* index */
-				     NULL,
-				     0,
-				     2*HZ);
-	}
-
-	return (count);
- err:
-	return (rc);
-}
-
-
-static void keyspan_pda_write_bulk_callback (struct urb *urb)
-{
-	struct usb_serial *serial = (struct usb_serial *) urb->context;
-	struct tty_struct *tty = serial->tty; 
-
-	wake_up_interruptible(&serial->write_wait);
-
-	if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && 
-	    tty->ldisc.write_wakeup)
-		(tty->ldisc.write_wakeup)(tty);
-
-	wake_up_interruptible(&tty->write_wait);
-}
-
-
-static int keyspan_pda_write_room (struct tty_struct *tty)
-{
-	struct usb_serial *serial = (struct usb_serial *)tty->driver_data; 
-
-	/* used by n_tty.c for processing of tabs and such. Giving it our
-	   conservative guess is probably good enough, but needs testing by
-	   running a console through the device. */
-
-	return (serial->tx_room);
-}
-
-
-static int keyspan_pda_chars_in_buffer (struct tty_struct *tty) 
-{
-	struct usb_serial *serial = (struct usb_serial *)tty->driver_data; 
-	unsigned char count;
-	int rc;
-
-	/* used by tty stuff to wait for output to drain. Go ask the
-	   device how much is still queued in the tx ring */
-	rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
-			     6, /* write_room */
-			     USB_TYPE_VENDOR | USB_RECIP_INTERFACE
-			     | USB_DIR_IN,
-			     1, /* value: 1 means chars_in_buffer */
-			     0, /* index */
-			     &count,
-			     1,
-			     2*HZ);
-	if (rc < 0)
-		return rc; /* failed */
-	if (rc == 0)
-		return -EIO; /* device didn't return any data */
-	return (count);
-}
-
-
-static int keyspan_pda_serial_open (struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-	unsigned char room;
-	int rc;
-
-	if (port->active) {
-		return -EINVAL;
-	}
-	port->active = 1;
- 
-	/* find out how much room is in the Tx ring */
-	rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
-			     6, /* write_room */
-			     USB_TYPE_VENDOR | USB_RECIP_INTERFACE
-			     | USB_DIR_IN,
-			     0, /* value */
-			     0, /* index */
-			     &room,
-			     1,
-			     2*HZ);
-	if (rc < 0) {
-		dbg(" roomquery failed");
-		return rc; /* failed */
-	}
-	if (rc == 0) {
-		dbg(" roomquery returned 0 bytes");
-		return -EIO; /* device didn't return any data */
-	}
-	serial->tx_room = room;
-	serial->tx_throttled = room ? 0 : 1;
-
-	/* the normal serial device seems to always turn on DTR and RTS here,
-	   so do the same */
-	if (tty->termios->c_cflag & CBAUD)
-		keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
-	else
-		keyspan_pda_set_modem_info(serial, 0);
-
-	/*Start reading from the device*/
-	if (usb_submit_urb(&port->read_urb))
-		dbg(" usb_submit_urb(read int) failed");
-
-	return (0);
-}
-
-
-static void keyspan_pda_serial_close(struct tty_struct *tty, 
-				     struct file *filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	/* the normal serial device seems to always shut off DTR and RTS now */
-	if (tty->termios->c_cflag & HUPCL)
-		keyspan_pda_set_modem_info(serial, 0);
-
-	/* shutdown our bulk reads and writes */
-	usb_unlink_urb (&port->write_urb);
-	usb_unlink_urb (&port->read_urb);
-	port->active = 0;
-}
-
-
-/* download the firmware to a "fake" device (pre-renumeration) */
-static int keyspan_pda_fake_startup (struct usb_serial *serial)
-{
-	int response;
-	const struct ezusb_hex_record *record;
-
-	/* download the firmware here ... */
-	response = ezusb_set_reset(serial, 1);
-
-	record = &keyspan_pda_firmware[0];
-	while(record->address != 0xffff) {
-		response = ezusb_writememory(serial, record->address,
-					     (unsigned char *)record->data,
-					     record->data_size, 0xa0);
-		if (response < 0) {
-			err("ezusb_writememory failed for Keyspan PDA "
-			    "firmware (%d %04X %p %d)",
-			    response, 
-			    record->address, record->data, record->data_size);
-			break;
-		}
-		record++;
-	}
-	/* bring device out of reset. Renumeration will occur in a moment
-	   and the new device will bind to the real driver */
-	response = ezusb_set_reset(serial, 0);
-
-	/* we want this device to fail to have a driver assigned to it. */
-	return (1);
-}
-
-
-/* do some startup allocations not currently performed by usb_serial_probe() */
-static int keyspan_pda_startup (struct usb_serial *serial)
-{
-	struct usb_endpoint_descriptor *intin;
-	intin = serial->port[0].interrupt_in_endpoint;
-
-	/* set up the receive interrupt urb */
-	FILL_INT_URB(&serial->port[0].read_urb, serial->dev,
-		     usb_rcvintpipe(serial->dev, intin->bEndpointAddress),
-		     serial->port[0].interrupt_in_buffer,
-		     intin->wMaxPacketSize,
-		     keyspan_pda_rx_interrupt,
-		     serial,
-		     intin->bInterval);
-
-	init_waitqueue_head(&serial->write_wait);
-	
-	return (0);
-}
-
-#endif	/* CONFIG_USB_SERIAL_KEYSPAN_PDA */
-
-
-/*****************************************************************************
- * generic devices specific driver functions
- *****************************************************************************/
-static int generic_serial_open (struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	dbg("generic_serial_open port %d", portNumber);
-
-	if (port->active) {
-		dbg ("device already open");
-		return -EINVAL;
-	}
-	port->active = 1;
- 
-	/* if we have a bulk interrupt, start reading from it */
-	if (serial->num_bulk_in) {
-		/*Start reading from the device*/
-		if (usb_submit_urb(&port->read_urb))
-			dbg("usb_submit_urb(read bulk) failed");
-	}
-
-	return (0);
-}
-
-
-static void generic_serial_close(struct tty_struct *tty, struct file * filp)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	dbg("generic_serial_close port %d", portNumber);
-	
-	/* shutdown any bulk reads that might be going on */
-	if (serial->num_bulk_out) {
-		usb_unlink_urb (&port->write_urb);
-	}
-	if (serial->num_bulk_in) {
-		usb_unlink_urb (&port->read_urb);
-	}
-
-	port->active = 0;
-}
-
-
-static int generic_serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
-{
-	struct usb_serial *serial = (struct usb_serial *) tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	dbg("generic_serial_write port %d", portNumber);
-
-	if (count == 0) {
-		dbg("write request of 0 bytes");
-		return (0);
-	}
-
-	/* only do something if we have a bulk out endpoint */
-	if (serial->num_bulk_out) {
-		if (port->write_urb.status == -EINPROGRESS) {
-			dbg ("already writing");
-			return (0);
-		}
-
-		count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
-
-		if (from_user) {
-			copy_from_user(port->write_urb.transfer_buffer, buf, count);
-		}
-		else {
-			memcpy (port->write_urb.transfer_buffer, buf, count);
-		}  
-
-		/* send the data out the bulk port */
-		port->write_urb.transfer_buffer_length = count;
-
-		if (usb_submit_urb(&port->write_urb))
-			dbg("usb_submit_urb(write bulk) failed");
-
-		return (count);
-	}
-	
-	/* no bulk out, so return 0 bytes written */
-	return (0);
-} 
-
-
-static int generic_write_room (struct tty_struct *tty) 
-{
-	struct usb_serial *serial = (struct usb_serial *)tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-	int room;
-
-	dbg("generic_write_room port %d", portNumber);
-	
-	if (serial->num_bulk_out) {
-		if (port->write_urb.status == -EINPROGRESS)
-			room = 0;
-		else
-			room = port->bulk_out_size;
-		dbg("generic_write_room returns %d", room);
-		return (room);
-	}
-	
-	return (0);
-}
-
-
-static int generic_chars_in_buffer (struct tty_struct *tty) 
-{
-	struct usb_serial *serial = (struct usb_serial *)tty->driver_data; 
-	int portNumber = MINOR(tty->device) - serial->minor;
-	struct usb_serial_port *port = &serial->port[portNumber];
-
-	dbg("generic_chars_in_buffer port %d", portNumber);
-	
-	if (serial->num_bulk_out) {
-		if (port->write_urb.status == -EINPROGRESS) {
-			return (port->bulk_out_size);
-		}
-	}
-
-	return (0);
-}
-
-
-static void generic_throttle (struct tty_struct *tty) 
-{
-	/* do nothing for the generic device */
-	return;
-}
-
-
-static void generic_unthrottle (struct tty_struct *tty) 
-{
-	/* do nothing for the generic device */
-	return;
-}
-
-
-static int generic_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
-{
-	/* generic driver doesn't support any ioctls yet */
-	return -ENOIOCTLCMD;
-}
-
-
-static void generic_set_termios (struct tty_struct *tty, struct termios * old)
-{
-	/* generic driver doesn't really care about setting any line settings */
-	return;
-}
-
-
-static void generic_read_bulk_callback (struct urb *urb)
-{
-	struct usb_serial *serial = (struct usb_serial *)urb->context;
-       	struct tty_struct *tty = serial->tty; 
-       	unsigned char *data = urb->transfer_buffer;
-	int i;
-
-	dbg("generic_read_bulk_callback");
-
-	if (urb->status) {
-		dbg("nonzero read bulk status received: %d", urb->status);
-		return;
-	}
-
-#ifdef DEBUG
-	if (urb->actual_length) {
-		printk (KERN_DEBUG __FILE__ ": data read - length = %d, data = ", urb->actual_length);
-		for (i = 0; i < urb->actual_length; ++i) {
-			printk ("%.2x ", data[i]);
-		}
-		printk ("\n");
-	}
-#endif
-	
-	if (urb->actual_length) {
-		for (i = 0; i < urb->actual_length ; ++i) {
-			 tty_insert_flip_char(tty, data[i], 0);
-	  	}
-	  	tty_flip_buffer_push(tty);
-	}
-
-	/* Continue trying to always read  */
-	if (usb_submit_urb(urb))
-		dbg("failed resubmitting read urb");
-
-	return;
-}
-
-
-static void generic_write_bulk_callback (struct urb *urb)
-{
-	struct usb_serial *serial = (struct usb_serial *) urb->context; 
-       	struct tty_struct *tty = serial->tty; 
-
-	dbg("generic_write_bulk_callback");
-
-	if (urb->status) {
-		dbg("nonzero write bulk status received: %d", urb->status);
-		return;
-	}
-
-	if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
-		(tty->ldisc.write_wakeup)(tty);
-
-	wake_up_interruptible(&tty->write_wait);
-	
-	return;
-}
-
-
-
-static void * usb_serial_probe(struct usb_device *dev, unsigned int ifnum)
-{
-	struct usb_serial *serial = NULL;
-	struct usb_serial_port *port;
-	struct usb_interface_descriptor *interface;
-	struct usb_endpoint_descriptor *endpoint;
-	struct usb_endpoint_descriptor *interrupt_in_endpoint[MAX_NUM_PORTS];
-	struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS];
-	struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS];
-	struct usb_serial_device_type *type;
-	int device_num;
-	int minor;
-	int buffer_size;
-	int i;
-	char interrupt_pipe;
-	char bulk_in_pipe;
-	char bulk_out_pipe;
-	int num_interrupt_in = 0;
-	int num_bulk_in = 0;
-	int num_bulk_out = 0;
-	int num_ports;
-	
-	/* loop through our list of known serial converters, and see if this device matches */
-	device_num = 0;
-	while (usb_serial_devices[device_num] != NULL) {
-		type = usb_serial_devices[device_num];
-		dbg ("Looking at %s Vendor id=%.4x Product id=%.4x", type->name, *(type->idVendor), *(type->idProduct));
-
-		/* look at the device descriptor */
-		if ((dev->descriptor.idVendor == *(type->idVendor)) &&
-		    (dev->descriptor.idProduct == *(type->idProduct))) {
-
-			dbg("descriptor matches...looking at the endpoints");
-
-			/* descriptor matches, let's try to find the endpoints needed */
-			interrupt_pipe = bulk_in_pipe = bulk_out_pipe = HAS_NOT;
-			
-			/* check out the endpoints */
-			interface = &dev->actconfig->interface[ifnum].altsetting[0];
-			for (i = 0; i < interface->bNumEndpoints; ++i) {
-				endpoint = &interface->endpoint[i];
-		
-				if ((endpoint->bEndpointAddress & 0x80) &&
-				    ((endpoint->bmAttributes & 3) == 0x02)) {
-					/* we found a bulk in endpoint */
-					dbg("found bulk in");
-					bulk_in_pipe = HAS;
-					bulk_in_endpoint[num_bulk_in] = endpoint;
-					++num_bulk_in;
-				}
-
-				if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
-				    ((endpoint->bmAttributes & 3) == 0x02)) {
-					/* we found a bulk out endpoint */
-					dbg("found bulk out");
-					bulk_out_pipe = HAS;
-					bulk_out_endpoint[num_bulk_out] = endpoint;
-					++num_bulk_out;
-				}
-		
-				if ((endpoint->bEndpointAddress & 0x80) &&
-				    ((endpoint->bmAttributes & 3) == 0x03)) {
-					/* we found a interrupt in endpoint */
-					dbg("found interrupt in");
-					interrupt_pipe = HAS;
-					interrupt_in_endpoint[num_interrupt_in] = endpoint;
-					++num_interrupt_in;
-				}
-
-			}
-	
-			/* verify that we found all of the endpoints that we need */
-			if ((interrupt_pipe & type->needs_interrupt_in) &&
-			    (bulk_in_pipe & type->needs_bulk_in) &&
-			    (bulk_out_pipe & type->needs_bulk_out)) {
-				/* found all that we need */
-				info("%s converter detected", type->name);
-
-#ifdef CONFIG_USB_SERIAL_GENERIC
-				if (type == &generic_device)
-					num_ports = num_bulk_out;
-				else
-#endif
-					num_ports = type->num_ports;
-
-				serial = get_free_serial (num_ports, &minor);
-				if (serial == NULL) {
-					err("No more free serial devices");
-					return NULL;
-				}
-	
-			       	serial->dev = dev;
-				serial->type = type;
-				serial->minor = minor;
-				serial->num_ports = num_ports;
-				serial->num_bulk_in = num_bulk_in;
-				serial->num_bulk_out = num_bulk_out;
-				serial->num_interrupt_in = num_interrupt_in;
-
-				/* collect interrupt_in endpoints now, because
-				   the keyspan_pda startup function needs
-				   to know about them */
-				for (i = 0; i < num_interrupt_in; ++i) {
-					port = &serial->port[i];
-					buffer_size = interrupt_in_endpoint[i]->wMaxPacketSize;
-					port->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
-					if (!port->interrupt_in_buffer) {
-						err("Couldn't allocate interrupt_in_buffer");
-						goto probe_error;
-					}
-					port->interrupt_in_endpoint = interrupt_in_endpoint[i];
-				}
-
-				/* if this device type has a startup function, call it */
-				if (type->startup) {
-					if (type->startup (serial)) {
-						return_serial (serial);
-						return NULL;
-					}
-				}
-
-				/* set up the endpoint information */
-				for (i = 0; i < num_bulk_in; ++i) {
-					port = &serial->port[i];
-					buffer_size = bulk_in_endpoint[i]->wMaxPacketSize;
-					port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
-					if (!port->bulk_in_buffer) {
-						err("Couldn't allocate bulk_in_buffer");
-						goto probe_error;
-					}
-					if (serial->type->read_bulk_callback) {
-						FILL_BULK_URB(&port->read_urb, dev, usb_rcvbulkpipe (dev, bulk_in_endpoint[i]->bEndpointAddress),
-								port->bulk_in_buffer, buffer_size, serial->type->read_bulk_callback, serial);
-					} else {
-						FILL_BULK_URB(&port->read_urb, dev, usb_rcvbulkpipe (dev, bulk_in_endpoint[i]->bEndpointAddress),
-								port->bulk_in_buffer, buffer_size, generic_read_bulk_callback, serial);
-					}
-				}
-
-				for (i = 0; i < num_bulk_out; ++i) {
-					port = &serial->port[i];
-					port->bulk_out_size = bulk_out_endpoint[i]->wMaxPacketSize;
-					port->bulk_out_buffer = kmalloc (port->bulk_out_size, GFP_KERNEL);
-					if (!port->bulk_out_buffer) {
-						err("Couldn't allocate bulk_out_buffer");
-						goto probe_error;
-					}
-					if (serial->type->write_bulk_callback) {
-						FILL_BULK_URB(&port->write_urb, dev, usb_sndbulkpipe (dev, bulk_out_endpoint[i]->bEndpointAddress),
-								port->bulk_out_buffer, port->bulk_out_size, serial->type->write_bulk_callback, serial);
-					} else {
-						FILL_BULK_URB(&port->write_urb, dev, usb_sndbulkpipe (dev, bulk_out_endpoint[i]->bEndpointAddress),
-								port->bulk_out_buffer, port->bulk_out_size, generic_write_bulk_callback, serial);
-					}
-				}
-
-#if 0 /* use this code when WhiteHEAT is up and running */
-				for (i = 0; i < num_interrupt_in; ++i) {
-					buffer_size = interrupt_in_endpoint[i]->wMaxPacketSize;
-					serial->interrupt_in_buffer[i] = kmalloc (buffer_size, GFP_KERNEL);
-					if (!serial->interrupt_in_buffer[i]) {
-						err("Couldn't allocate interrupt_in_buffer");
-						goto probe_error;
-					}
-					FILL_INT_URB(&serial->control_urb[i], dev, usb_rcvintpipe (dev, interrupt_in_endpoint[i]->bEndpointAddress),
-							serial->interrupt_in_buffer[i], buffer_size, serial_control_irq,
-							serial, interrupt_in_endpoint[i]->bInterval);
-				}
-#endif
-
-				for (i = 0; i < serial->num_ports; ++i) {
-					info("%s converter now attached to ttyUSB%d", type->name, serial->minor + i);
-				}
-
-				MOD_INC_USE_COUNT;
-
-				return serial;
-			} else {
-				info("descriptors matched, but endpoints did not");
-			}
-		}
-
-		/* look at the next type in our list */
-		++device_num;
-	}
-
-probe_error:
-	if (serial) {
-		for (i = 0; i < num_bulk_in; ++i)
-			if (serial->port[i].bulk_in_buffer[i])
-				kfree (serial->port[i].bulk_in_buffer);
-		for (i = 0; i < num_bulk_out; ++i)
-			if (serial->port[i].bulk_out_buffer)
-				kfree (serial->port[i].bulk_out_buffer);
-		for (i = 0; i < num_interrupt_in; ++i)
-			if (serial->port[i].interrupt_in_buffer)
-				kfree (serial->port[i].interrupt_in_buffer);
-		
-		/* return the minor range that this device had */
-		return_serial (serial);
-
-		/* free up any memory that we allocated */
-		kfree (serial);
-	}
-	return NULL;
-}
-
-
-static void usb_serial_disconnect(struct usb_device *dev, void *ptr)
-{
-	struct usb_serial *serial = (struct usb_serial *) ptr;
-	struct usb_serial_port *port;
-	int i;
-
-	if (serial) {
-		/* need to stop any transfers...*/
-		for (i = 0; i < serial->num_ports; ++i) {
-			port = &serial->port[i];
-			usb_unlink_urb (&port->write_urb);
-			usb_unlink_urb (&port->read_urb);
-			port->active = 0;
-		}
-
-		/* free up any memory that we allocated */
-		for (i = 0; i < serial->num_bulk_in; ++i) {
-			port = &serial->port[i];
-			if (port->bulk_in_buffer)
-				kfree (port->bulk_in_buffer);
-		}
-		for (i = 0; i < serial->num_bulk_out; ++i) {
-			port = &serial->port[i];
-			if (port->bulk_out_buffer)
-				kfree (port->bulk_out_buffer);
-		}
-		for (i = 0; i < serial->num_interrupt_in; ++i) {
-			port = &serial->port[i];
-			if (port->interrupt_in_buffer)
-				kfree (port->interrupt_in_buffer);
-		}
-
-		for (i = 0; i < serial->num_ports; ++i) {
-			info("%s converter now disconnected from ttyUSB%d", serial->type->name, serial->minor + i);
-		}
-
-		/* return the minor range that this device had */
-		return_serial (serial);
-
-		/* free up any memory that we allocated */
-		kfree (serial);
-
-	} else {
-		info("device disconnected");
-	}
-	
-	MOD_DEC_USE_COUNT;
-}
-
-
-static struct tty_driver serial_tty_driver = {
-	magic:			TTY_DRIVER_MAGIC,
-	driver_name:		"usb",
-	name:			"ttyUSB",
-	major:			SERIAL_TTY_MAJOR,
-	minor_start:		0,
-	num:			SERIAL_TTY_MINORS,
-	type:			TTY_DRIVER_TYPE_SERIAL,
-	subtype:		SERIAL_TYPE_NORMAL,
-	flags:			TTY_DRIVER_REAL_RAW,
-	refcount:		&serial_refcount,
-	table:			serial_tty,
-	proc_entry:		NULL,
-	other:			NULL,
-	termios:		serial_termios,
-	termios_locked:		serial_termios_locked,
-	
-	open:			serial_open,
-	close:			serial_close,
-	write:			serial_write,
-	put_char:		NULL,
-	flush_chars:		NULL,
-	write_room:		serial_write_room,
-	ioctl:			serial_ioctl,
-	set_termios:		serial_set_termios,
-	set_ldisc:		NULL, 
-	throttle:		serial_throttle,
-	unthrottle:		serial_unthrottle,
-	stop:			NULL,
-	start:			NULL,
-	hangup:			NULL,
-	break_ctl:		serial_break,
-	wait_until_sent:	NULL,
-	send_xchar:		NULL,
-	read_proc:		NULL,
-	chars_in_buffer:	serial_chars_in_buffer,
-	flush_buffer:		NULL
-};
-
-
-int usb_serial_init(void)
-{
-	int i;
-
-	/* Initalize our global data */
-	for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
-		serial_table[i] = NULL;
-	}
-
-	/* register the tty driver */
-	serial_tty_driver.init_termios		= tty_std_termios;
-	serial_tty_driver.init_termios.c_cflag	= B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-	if (tty_register_driver (&serial_tty_driver)) {
-		err("failed to register tty driver");
-		return -EPERM;
-	}
-	
-	/* register the USB driver */
-	if (usb_register(&usb_serial_driver) < 0) {
-		tty_unregister_driver(&serial_tty_driver);
-		return -1;
-	}
-
-	info("support registered");
-	return 0;
-}
-
-
-void usb_serial_exit(void)
-{
-	tty_unregister_driver(&serial_tty_driver);
-	usb_deregister(&usb_serial_driver);
-}
-
-
-module_init(usb_serial_init);
-module_exit(usb_serial_exit);
-
-

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)