Staging: add USB serial Quatech driver

Add support for all Quatech usb to serial devices.

Based on an original driver from Quatech.

Cleaned up and forward ported by me.

It's a mess, uses it's own tty layer interface, and the coding style is
horrible.

Cc: Tim Gobeli <tgobeli@quatech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

5 files changed, 2996 insertions, 0 deletions

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 98dae044cbf5..7ea9d918387f 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -113,5 +113,7 @@ source "drivers/staging/heci/Kconfig"
 
 source "drivers/staging/line6/Kconfig"
 
+source "drivers/staging/serqt_usb/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 2a859ee036da..47dfd5b4288b 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -39,3 +39,4 @@ obj-$(CONFIG_IDE_PHISON)	+= phison/
 obj-$(CONFIG_PLAN9AUTH)		+= p9auth/
 obj-$(CONFIG_HECI)		+= heci/
 obj-$(CONFIG_LINE6_USB)		+= line6/
+obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100)	+= serqt_usb/
diff --git a/drivers/staging/serqt_usb/Kconfig b/drivers/staging/serqt_usb/Kconfig
new file mode 100644
index 000000000000..cc1af5df40d7
--- /dev/null
+++ b/drivers/staging/serqt_usb/Kconfig
@@ -0,0 +1,9 @@
+config USB_SERIAL_QUATECH_ESU100
+	tristate "USB Quatech ESU-100 8 Port Serial Driver"
+	depends on USB_SERIAL
+	help
+	  Say Y here if you want to use the Quatech ESU-100 8 port usb to
+	  serial adapter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called serqt_usb.
diff --git a/drivers/staging/serqt_usb/Makefile b/drivers/staging/serqt_usb/Makefile
new file mode 100644
index 000000000000..4fd1da275e8d
--- /dev/null
+++ b/drivers/staging/serqt_usb/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100)		+= serqt_usb.o
diff --git a/drivers/staging/serqt_usb/serqt_usb.c b/drivers/staging/serqt_usb/serqt_usb.c
new file mode 100644
index 000000000000..7ababa0dfa7b
--- /dev/null
+++ b/drivers/staging/serqt_usb/serqt_usb.c
@@ -0,0 +1,2983 @@
+/*
+ * This code was developed for the Quatech USB line for linux, it used
+ * much of the code developed by Greg Kroah-Hartman for USB serial devices
+ *
+ */
+
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/wait.h>
+#include <linux/types.h>
+#include <linux/version.h>
+
+#include <asm/uaccess.h>
+
+/* Use our own dbg macro */
+//#define DEBUG_ON
+//#undef dbg
+#ifdef DEBUG_ON
+    #define  mydbg(const...)    printk(const)
+#else
+    #define  mydbg(const...)
+#endif
+
+
+/* parity check flag */
+#define RELEVANT_IFLAG(iflag)	(iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+
+#define SERIAL_TTY_MAJOR	        0	/* Nice legal number now */
+#define SERIAL_TTY_MINORS	        255	/* loads of devices :) */
+#define MAX_NUM_PORTS		        8	/* The maximum number of ports one device can grab at once */
+#define PREFUFF_LEVEL_CONSERVATIVE  128
+#define ATC_DISABLED                0x00
+
+#define RR_BITS             0x03 //for clearing clock bits
+#define DUPMODE_BITS        0xc0
+
+#define RS232_MODE          0x00
+#define RTSCTS_TO_CONNECTOR 0x40
+#define CLKS_X4             0x02  ///
+
+#define LOOPMODE_BITS       0x41 //LOOP1 = b6, LOOP0 = b0 (PORT B)
+#define ALL_LOOPBACK        0x01
+#define MODEM_CTRL          0x40
+
+
+#define THISCHAR                    data[i]
+#define NEXTCHAR                    data[i + 1]
+#define THIRDCHAR                  data[i + 2]
+#define FOURTHCHAR                  data[i + 3]
+
+//*************************************************
+// Useful defintions for port A, Port B and Port C
+#define FULLPWRBIT          0x00000080
+#define NEXT_BOARD_POWER_BIT        0x00000004
+
+
+#define SERIAL_LSR_OE       0x02
+#define SERIAL_LSR_PE       0x04
+#define SERIAL_LSR_FE       0x08
+#define SERIAL_LSR_BI       0x10
+
+#define SERIAL_LSR_TEMT     0x40
+
+#define  DIV_LATCH_LS               0x00
+#define  XMT_HOLD_REGISTER          0x00
+#define  XVR_BUFFER_REGISTER        0x00
+#define  DIV_LATCH_MS               0x01
+#define  FIFO_CONTROL_REGISTER      0x02
+#define  LINE_CONTROL_REGISTER      0x03
+#define  MODEM_CONTROL_REGISTER     0x04
+#define  LINE_STATUS_REGISTER       0x05
+#define  MODEM_STATUS_REGISTER      0x06
+
+
+#define  SERIAL_MCR_DTR             0x01
+#define  SERIAL_MCR_RTS             0x02
+#define  SERIAL_MCR_LOOP            0x10
+
+#define  SERIAL_MSR_CTS             0x10
+#define  SERIAL_MSR_CD              0x80
+#define  SERIAL_MSR_RI              0x40
+#define  SERIAL_MSR_DSR             0x20
+#define  SERIAL_MSR_MASK            0xf0
+
+#define  SERIAL_8_DATA              0x03
+#define  SERIAL_7_DATA              0x02
+#define  SERIAL_6_DATA              0x01
+#define  SERIAL_5_DATA              0x00
+
+#define  SERIAL_ODD_PARITY          0X08
+#define  SERIAL_EVEN_PARITY         0X18
+#define  SERIAL_TWO_STOPB           0x04
+#define  SERIAL_ONE_STOPB           0x00
+
+#define  MAX_BAUD_RATE              460800
+#define  MAX_BAUD_REMAINDER         4608
+
+
+#define QT_SET_GET_DEVICE           0xc2
+#define QT_OPEN_CLOSE_CHANNEL       0xca
+#define QT_GET_SET_PREBUF_TRIG_LVL  0xcc
+#define QT_SET_ATF                  0xcd
+#define QT_GET_SET_REGISTER         0xc0
+#define QT_GET_SET_UART             0xc1
+#define QT_HW_FLOW_CONTROL_MASK     0xc5
+#define QT_SW_FLOW_CONTROL_MASK     0xc6
+#define QT_SW_FLOW_CONTROL_DISABLE  0xc7
+#define QT_BREAK_CONTROL            0xc8
+
+#define SERIALQT_PCI_IOC_MAGIC 'k'
+#define SERIALQT_WRITE_QOPR _IOW(SERIALQT_PCI_IOC_MAGIC, 0, int)
+#define SERIALQT_WRITE_QMCR _IOW(SERIALQT_PCI_IOC_MAGIC, 1, int)
+#define SERIALQT_GET_NUMOF_UNITS _IOR(SERIALQT_PCI_IOC_MAGIC, 2, void *)
+#define SERIALQT_GET_THIS_UNIT _IOR(SERIALQT_PCI_IOC_MAGIC, 3, void *)
+#define SERIALQT_READ_QOPR _IOR(SERIALQT_PCI_IOC_MAGIC, 4, int)
+#define SERIALQT_READ_QMCR _IOR(SERIALQT_PCI_IOC_MAGIC, 5, int)
+#define SERIALQT_IS422_EXTENDED _IOR(SERIALQT_PCI_IOC_MAGIC, 6, int)    //returns successful if 422 extended
+
+
+#define USBD_TRANSFER_DIRECTION_IN    0xc0
+#define USBD_TRANSFER_DIRECTION_OUT   0x40
+
+#define ATC_DISABLED                0x00
+#define ATC_RTS_ENABLED                 0x02
+#define ATC_DTR_ENABLED                 0x01
+
+#define RR_BITS             0x03 //for clearing clock bits
+#define DUPMODE_BITS        0xc0
+
+#define FULL_DUPLEX         0x00
+#define HALF_DUPLEX_RTS     0x40
+#define HALF_DUPLEX_DTR     0x80
+
+#define QMCR_FULL_DUPLEX  0x00
+#define QMCR_HALF_DUPLEX_RTS 0x02
+#define QMCR_HALF_DUPLEX_DTR 0x01
+#define QMCR_HALF_DUPLEX_MASK 0x03
+#define QMCR_CONNECTOR_MASK 0x1C
+
+#define QMCR_RX_EN_MASK 0x20
+
+#define QMCR_ALL_LOOPBACK    0x10
+#define QMCR_MODEM_CONTROL   0X00
+
+
+
+#define SERIALQT_IOC_MAXNR 6
+
+struct usb_serial_port {
+	struct usb_serial	*serial;	/* pointer back to the owner of this port */
+	struct tty_struct *	tty;		/* the coresponding tty for this port */
+	unsigned char		number;
+	char			active;		/* someone has this device open */
+
+	unsigned char *		interrupt_in_buffer;
+	struct urb *		interrupt_in_urb;
+	__u8			interrupt_in_endpointAddress;
+
+	unsigned char *		bulk_in_buffer;
+    unsigned char *     xfer_to_tty_buffer;
+	struct urb *		read_urb;
+	__u8			bulk_in_endpointAddress;
+
+	unsigned char *		bulk_out_buffer;
+	int			bulk_out_size;
+	struct urb *		write_urb;
+	__u8			bulk_out_endpointAddress;
+
+	wait_queue_head_t	write_wait;
+    wait_queue_head_t   wait;
+    struct work_struct  work;
+
+	int			open_count;	/* number of times this port has been opened */
+	struct semaphore	sem;		/* locks this structure */
+
+    __u8			shadowLCR;		/* last LCR value received */
+    __u8			shadowMCR;		/* last MCR value received */
+    __u8			shadowMSR;		/* last MSR value received */
+    __u8			shadowLSR;		/* last LSR value received */
+    int				RxHolding;
+    char			closePending;
+    int				ReadBulkStopped;
+
+	void *			private;	/* data private to the specific port */
+};
+
+struct identity {
+    int     index;
+    int     n_identity;
+};
+
+struct usb_serial {
+	struct usb_device *		dev;
+	struct usb_interface *		interface;		/* the interface for this device */
+	struct tty_driver *		tty_driver;		/* the tty_driver for this device */
+	unsigned char			minor;			/* the starting minor number for this device */
+	unsigned char			num_ports;		/* the number of ports this device has */
+	char				num_interrupt_in;	/* number of interrupt in endpoints we have */
+	char				num_bulk_in;		/* number of bulk in endpoints we have */
+	char				num_bulk_out;		/* number of bulk out endpoints we have */
+    unsigned char		num_OpenCount;		/* the number of ports this device has */
+
+
+	__u16				vendor;			/* vendor id of this device */
+	__u16				product;		/* product id of this device */
+	struct usb_serial_port		port[MAX_NUM_PORTS];
+
+	void *			private;		/* data private to the specific driver */
+};
+
+
+
+static inline int port_paranoia_check (struct usb_serial_port *port, const char *function)
+{
+	if (!port) {
+		dbg("%s - port == NULL", function);
+		return -1;
+	}
+	if (!port->serial) {
+		dbg("%s - port->serial == NULL\n", function);
+		return -1;
+	}
+	if (!port->tty) {
+		dbg("%s - port->tty == NULL\n", function);
+		return -1;
+	}
+
+	return 0;
+}
+
+
+/* Inline functions to check the sanity of a pointer that is passed to us */
+static inline int serial_paranoia_check (struct usb_serial *serial, const char *function)
+{
+	if (!serial) {
+		dbg("%s - serial == NULL\n", function);
+		return -1;
+	}
+
+	return 0;
+}
+
+
+static inline struct usb_serial* get_usb_serial (struct usb_serial_port *port, const char *function)
+{
+	/* if no port was specified, or it fails a paranoia check */
+	if (!port ||
+		port_paranoia_check (port, function) ||
+		serial_paranoia_check (port->serial, function)) {
+		/* then say that we dont have a valid usb_serial thing, which will
+		 * end up genrating -ENODEV return values */
+		return NULL;
+	}
+
+	return port->serial;
+}
+
+
+struct qt_get_device_data
+{
+	__u8 porta;
+	__u8 portb;
+	__u8 portc;
+};
+
+struct qt_open_channel_data
+{
+	__u8 line_status;
+	__u8 modem_status;
+};
+
+static void ProcessLineStatus(struct usb_serial_port *port, unsigned char line_status);
+static void ProcessModemStatus(struct usb_serial_port *port, unsigned char modem_status);
+static void ProcessRxChar(struct usb_serial_port *port, unsigned char Data);
+static struct usb_serial *get_free_serial (int num_ports, int *minor);
+
+
+static int serqt_probe(struct usb_interface *interface,
+                       const struct usb_device_id *id);
+
+
+static void serqt_usb_disconnect(struct usb_interface *interface);
+static int box_set_device(struct usb_serial *serial, struct qt_get_device_data *pDeviceData);
+static int box_get_device(struct usb_serial *serial, struct qt_get_device_data *pDeviceData);
+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_room (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 ktermios * old);
+static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count);
+
+static void serial_throttle (struct tty_struct * tty);
+static void serial_unthrottle (struct tty_struct * tty);
+static int serial_break (struct tty_struct *tty, int break_state);
+static int serial_chars_in_buffer (struct tty_struct *tty);
+static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data);
+
+static int qt_open (struct usb_serial_port *port, struct file *filp);
+static int BoxSetPrebufferLevel(struct usb_serial *serial);
+
+static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode);
+static int BoxSetUart(struct usb_serial *serial,  unsigned short Uart_Number, unsigned short default_divisor, unsigned char default_LCR );
+
+
+static int BoxOPenCloseChannel(struct usb_serial *serial, __u16 Uart_Number, __u16 OpenClose, struct qt_open_channel_data *pDeviceData);
+static void qt_close (struct usb_serial_port *port, struct file * filp);
+static int BoxGetRegister(struct usb_serial *serial,  unsigned short Uart_Number,unsigned short Register_Num, __u8 *pValue);
+static int BoxSetRegister(struct usb_serial *serial,  unsigned short Uart_Number, unsigned short Register_Num, unsigned short Value );
+static void qt_write_bulk_callback(struct urb *urb);
+static int qt_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
+static void port_softint(struct work_struct *work);
+static int qt_write_room (struct usb_serial_port *port);
+static int qt_chars_in_buffer (struct usb_serial_port *port);
+static int qt_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
+static void	qt_set_termios(struct usb_serial_port *port, struct ktermios *old_termios);
+static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int UartNumber, int bSet);
+static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber);
+static int EmulateWriteQMCR_Reg(int index, unsigned uc_value);
+static int EmulateReadQMCR_Reg(int index, unsigned *uc_value);
+static struct usb_serial *find_the_box(unsigned int index);
+int ioctl_serial_usb (struct inode *innod, struct file *filp, unsigned int cmd, unsigned long arg);
+
+
+static int BoxSetSW_FlowCtrl(struct usb_serial *serial,  __u16 Uart, unsigned char stop_char,  unsigned char start_char);
+static void qt_read_bulk_callback(struct urb *urb);
+
+static void port_sofrint(void *private);
+
+static void return_serial(struct usb_serial *serial);
+
+
+static int serial_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear);
+static int serial_tiocmget(struct tty_struct *tty, struct file *file);
+
+
+
+static int qt_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int value);
+
+static int qt_tiocmget(struct usb_serial_port *port, struct file * file);
+
+
+
+/* Version Information */
+#define DRIVER_VERSION "v2.14"
+#define DRIVER_AUTHOR "Tim Gobeli, Quatech, Inc"
+#define DRIVER_DESC "Quatech USB to Serial Driver"
+
+#define	USB_VENDOR_ID_QUATECH			0x061d	// Quatech VID
+#define DEVICE_ID_QUATECH_RS232_SINGLE_PORT	0xC020	//SSU100
+#define DEVICE_ID_QUATECH_RS422_SINGLE_PORT	0xC030	//SSU200
+#define DEVICE_ID_QUATECH_RS232_DUAL_PORT	0xC040	//DSU100
+#define DEVICE_ID_QUATECH_RS422_DUAL_PORT	0xC050	//DSU200
+#define DEVICE_ID_QUATECH_RS232_FOUR_PORT	0xC060	//QSU100
+#define DEVICE_ID_QUATECH_RS422_FOUR_PORT	0xC070	//QSU200
+#define DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A	0xC080	//ESU100A
+#define DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B	0xC081	//ESU100B
+#define DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A	0xC0A0	//ESU200A
+#define DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B	0xC0A1	//ESU200B
+#define DEVICE_ID_QUATECH_RS232_16_PORT_A	0xC090	//HSU100A
+#define DEVICE_ID_QUATECH_RS232_16_PORT_B	0xC091	//HSU100B
+#define DEVICE_ID_QUATECH_RS232_16_PORT_C	0xC092	//HSU100C
+#define DEVICE_ID_QUATECH_RS232_16_PORT_D	0xC093	//HSU100D
+#define DEVICE_ID_QUATECH_RS422_16_PORT_A	0xC0B0	//HSU200A
+#define DEVICE_ID_QUATECH_RS422_16_PORT_B	0xC0B1	//HSU200B
+#define DEVICE_ID_QUATECH_RS422_16_PORT_C	0xC0B2	//HSU200C
+#define DEVICE_ID_QUATECH_RS422_16_PORT_D	0xC0B3	//HSU200D
+
+
+/* table of Quatech devices  */
+static struct usb_device_id serqt_table [] = {
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_SINGLE_PORT)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_SINGLE_PORT)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_DUAL_PORT)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_DUAL_PORT)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_FOUR_PORT)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_FOUR_PORT)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_A)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_B)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_C)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_D)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_A)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_B)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_C)},
+	{ USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_D)},
+	{}                 /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, serqt_table);
+
+static int major_number;
+static struct usb_serial    *serial_table[SERIAL_TTY_MINORS];   /* initially all NULL */
+
+
+/* table of Quatech 422devices  */
+static unsigned int serqt_422_table[] = {
+	DEVICE_ID_QUATECH_RS422_SINGLE_PORT,
+	DEVICE_ID_QUATECH_RS422_DUAL_PORT,
+	DEVICE_ID_QUATECH_RS422_FOUR_PORT,
+	DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A,
+	DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B,
+	DEVICE_ID_QUATECH_RS422_16_PORT_A,
+	DEVICE_ID_QUATECH_RS422_16_PORT_B,
+	DEVICE_ID_QUATECH_RS422_16_PORT_C,
+	DEVICE_ID_QUATECH_RS422_16_PORT_D,
+	0 /* terminate with zero */
+};
+
+
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver serqt_usb_driver = {
+	.name =		"quatech-usb-serial",
+	.probe =	serqt_probe,
+	.disconnect =	serqt_usb_disconnect,
+	.id_table =	serqt_table,
+};
+
+static struct ktermios *serial_termios[SERIAL_TTY_MINORS];
+static struct ktermios *serial_termios_locked[SERIAL_TTY_MINORS];
+
+static const struct tty_operations serial_ops = {
+    .open =         serial_open,
+    .close =        serial_close,
+    .write =        serial_write,
+    .write_room =       serial_write_room,
+    .ioctl =        serial_ioctl,
+    .set_termios =      serial_set_termios,
+    .throttle =     serial_throttle,
+    .unthrottle =       serial_unthrottle,
+    .break_ctl =        serial_break,
+    .chars_in_buffer =  serial_chars_in_buffer,
+    .read_proc =        serial_read_proc,
+    .tiocmset = serial_tiocmset,
+    .tiocmget = serial_tiocmget,
+};
+
+static struct tty_driver serial_tty_driver = {
+    .magic =        TTY_DRIVER_MAGIC,
+    .driver_name =      "Quatech usb-serial",
+    .name =         "ttyQT_USB",
+    .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 | TTY_DRIVER_DYNAMIC_DEV,
+
+    .termios =      serial_termios,
+    .termios_locked =   serial_termios_locked,
+    .init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL,
+
+    .init_termios.c_iflag = ICRNL | IXON,
+    .init_termios.c_oflag = OPOST,
+
+    .init_termios.c_lflag= ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN,
+};
+
+//fops for parent device
+static struct file_operations serialqt_usb_fops = {
+    .ioctl =  ioctl_serial_usb,
+
+};
+
+
+ /**
+ *	  serqt_probe
+ *
+ *	Called by the usb core when a new device is connected that it thinks
+ *	this driver might be interested in.
+ *
+ */
+static int serqt_probe(struct usb_interface *interface,
+                       const struct usb_device_id *id)
+{
+    struct usb_device *dev = interface_to_usbdev(interface);
+    struct usb_serial *serial = NULL;
+    struct usb_serial_port *port;
+    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];
+    int minor;
+    int buffer_size;
+    int i;
+    struct usb_host_interface *iface_desc;
+    int num_interrupt_in = 0;
+    int num_bulk_in = 0;
+    int num_bulk_out = 0;
+    int num_ports;
+    struct qt_get_device_data DeviceData;
+    int status;
+
+	mydbg("In %s\n", __FUNCTION__);
+
+    /* let's find the endpoints needed */
+    /* check out the endpoints */
+    iface_desc = interface->cur_altsetting;;
+    for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i)
+    {
+        endpoint = &iface_desc->endpoint[i].desc;
+
+        if ((endpoint->bEndpointAddress & 0x80) &&
+            ((endpoint->bmAttributes & 3) == 0x02))
+        {
+            /* we found a bulk in endpoint */
+            mydbg("found bulk in");
+            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 */
+            mydbg("found bulk out\n");
+            bulk_out_endpoint[num_bulk_out] = endpoint;
+            ++num_bulk_out;
+        }
+
+        if ((endpoint->bEndpointAddress & 0x80) &&
+            ((endpoint->bmAttributes & 3) == 0x03))
+        {
+            /* we found a interrupt in endpoint */
+            mydbg("found interrupt in\n");
+            interrupt_in_endpoint[num_interrupt_in] = endpoint;
+            ++num_interrupt_in;
+        }
+    }
+
+    /* found all that we need */
+    dev_info(&interface->dev, "Quatech converter detected\n");
+    num_ports = num_bulk_out;
+    if (num_ports == 0)
+    {
+        err("Quatech device with no bulk out, not allowed.");
+        return -ENODEV;
+
+    }
+
+    serial = get_free_serial (num_ports, &minor);
+    if (serial == NULL)
+    {
+        err("No more free serial devices");
+        return -ENODEV;
+    }
+
+    serial->dev = dev;
+    serial->interface = interface;
+    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;
+    serial->vendor = dev->descriptor.idVendor;
+    serial->product = dev->descriptor.idProduct;
+
+
+    /* set up the endpoint information */
+    for (i = 0; i < num_bulk_in; ++i)
+    {
+        endpoint = bulk_in_endpoint[i];
+        port = &serial->port[i];
+        port->read_urb = usb_alloc_urb (0, GFP_KERNEL);
+        if (!port->read_urb)
+        {
+            err("No free urbs available");
+            goto probe_error;
+        }
+        buffer_size = endpoint->wMaxPacketSize;
+        port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
+        port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
+        port->xfer_to_tty_buffer = kmalloc (buffer_size, GFP_KERNEL);
+        if (!port->bulk_in_buffer)
+        {
+            err("Couldn't allocate bulk_in_buffer");
+            goto probe_error;
+        }
+        usb_fill_bulk_urb (port->read_urb, dev,
+                           usb_rcvbulkpipe (dev,
+                                            endpoint->bEndpointAddress),
+                           port->bulk_in_buffer, buffer_size,
+                           qt_read_bulk_callback,
+                           port);
+    }
+
+    for (i = 0; i < num_bulk_out; ++i)
+    {
+        endpoint = bulk_out_endpoint[i];
+        port = &serial->port[i];
+        port->write_urb = usb_alloc_urb (0, GFP_KERNEL);
+        if (!port->write_urb)
+        {
+            err("No free urbs available");
+            goto probe_error;
+        }
+        buffer_size = endpoint->wMaxPacketSize;
+        port->bulk_out_size = buffer_size;
+        port->bulk_out_endpointAddress = endpoint->bEndpointAddress;
+        port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL);
+        if (!port->bulk_out_buffer)
+        {
+            err("Couldn't allocate bulk_out_buffer");
+            goto probe_error;
+        }
+        usb_fill_bulk_urb (port->write_urb, dev,
+                           usb_sndbulkpipe (dev,
+                                            endpoint->bEndpointAddress),
+                           port->bulk_out_buffer, buffer_size,
+                           qt_write_bulk_callback,
+                           port);
+
+
+    }
+
+    //For us numb of bulkin  or out = number of ports
+
+    mydbg("%s - setting up %d port structures for this device\n", __FUNCTION__, num_bulk_in);
+    for (i = 0; i < num_bulk_in; ++i)
+    {
+        port = &serial->port[i];
+        port->number = i + serial->minor;
+        port->serial = serial;
+
+        INIT_WORK(&port->work, port_softint);
+
+        init_MUTEX (&port->sem);
+
+
+
+    }
+    status = box_get_device(serial, &DeviceData);
+    if (status < 0)
+    {
+        mydbg(__FILE__"box_get_device failed");
+        goto probe_error;
+    }
+
+    mydbg(__FILE__"DeviceData.portb = 0x%x",DeviceData.portb);
+
+    DeviceData.portb  &= ~FULLPWRBIT;
+    mydbg(__FILE__"Changing DeviceData.portb to 0x%x",DeviceData.portb);
+
+    status = box_set_device(serial, &DeviceData);
+    if (status < 0)
+    {
+        mydbg(__FILE__"box_set_device failed\n");
+        goto probe_error;
+    }
+
+
+
+    /* initialize the devfs nodes for this device and let the user know what ports we are bound to */
+    for (i = 0; i < serial->num_ports; ++i)
+    {
+             dev_info(&interface->dev, "Converter now attached to ttyUSB%d (or usb/tts/%d for devfs)",
+             serial->port[i].number, serial->port[i].number);
+    }
+
+	//usb_serial_console_init (debug, minor);
+
+    ///***********TAG add start next board here ****///
+    status = box_get_device(serial, &DeviceData);
+    if (status < 0)
+    {
+        mydbg(__FILE__"box_get_device failed");
+        goto probe_error;
+    }
+
+   //*****************and before we power up lets initialiaze parnent device stuff here before
+   //*****************we set thmem via any other method such as the property pages
+    switch (serial->product)
+    {
+    case DEVICE_ID_QUATECH_RS232_SINGLE_PORT:
+    case DEVICE_ID_QUATECH_RS232_DUAL_PORT:
+    case DEVICE_ID_QUATECH_RS232_FOUR_PORT:
+    case DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A:
+    case DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B:
+    case DEVICE_ID_QUATECH_RS232_16_PORT_A:
+    case DEVICE_ID_QUATECH_RS232_16_PORT_B:
+    case DEVICE_ID_QUATECH_RS232_16_PORT_C:
+    case DEVICE_ID_QUATECH_RS232_16_PORT_D:
+        DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
+        DeviceData.porta |= CLKS_X4;
+        DeviceData.portb &= ~(LOOPMODE_BITS);
+        DeviceData.portb |= RS232_MODE;
+         break;
+
+
+    case DEVICE_ID_QUATECH_RS422_SINGLE_PORT:
+    case DEVICE_ID_QUATECH_RS422_DUAL_PORT:
+    case DEVICE_ID_QUATECH_RS422_FOUR_PORT:
+    case DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A:
+    case DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B:
+    case DEVICE_ID_QUATECH_RS422_16_PORT_A:
+    case DEVICE_ID_QUATECH_RS422_16_PORT_B:
+    case DEVICE_ID_QUATECH_RS422_16_PORT_C:
+    case DEVICE_ID_QUATECH_RS422_16_PORT_D:
+        DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
+        DeviceData.porta |= CLKS_X4;
+        DeviceData.portb &= ~(LOOPMODE_BITS);
+        DeviceData.portb |= ALL_LOOPBACK;
+        break;
+    default:
+        DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
+        DeviceData.porta |= CLKS_X4;
+        DeviceData.portb &= ~(LOOPMODE_BITS);
+        DeviceData.portb |= RS232_MODE;
+        break;
+
+    }
+    status = BoxSetPrebufferLevel(serial);  //sets to default vaue
+    if (status < 0)
+    {
+        mydbg(__FILE__"BoxSetPrebufferLevel failed\n");
+        goto probe_error;
+    }
+
+    status = BoxSetATC(serial, ATC_DISABLED);
+    if (status < 0)
+    {
+        mydbg(__FILE__"BoxSetATC failed\n");
+        goto probe_error;
+    }
+   //****************************************************************************
+    mydbg(__FILE__"DeviceData.portb = 0x%x",DeviceData.portb);
+
+    DeviceData.portb  |= NEXT_BOARD_POWER_BIT;
+    mydbg(__FILE__"Changing DeviceData.portb to 0x%x",DeviceData.portb);
+
+    status = box_set_device(serial, &DeviceData);
+    if (status < 0)
+    {
+        mydbg(__FILE__"box_set_device failed\n");
+        goto probe_error;
+    }
+
+
+    mydbg("Exit Success %s\n", __FUNCTION__);
+
+	usb_set_intfdata (interface, serial);
+	return 0;
+
+
+
+    probe_error:
+
+    for (i = 0; i < num_bulk_in; ++i)
+    {
+        port = &serial->port[i];
+        if (port->read_urb)
+            usb_free_urb (port->read_urb);
+        if (port->bulk_in_buffer)
+            kfree (port->bulk_in_buffer);
+    }
+    for (i = 0; i < num_bulk_out; ++i)
+    {
+        port = &serial->port[i];
+        if (port->write_urb)
+            usb_free_urb (port->write_urb);
+        if (port->bulk_out_buffer)
+            kfree (port->bulk_out_buffer);
+
+        if (port->xfer_to_tty_buffer)
+            kfree (port->xfer_to_tty_buffer);
+    }
+    for (i = 0; i < num_interrupt_in; ++i)
+    {
+        port = &serial->port[i];
+        if (port->interrupt_in_urb)
+            usb_free_urb (port->interrupt_in_urb);
+        if (port->interrupt_in_buffer)
+            kfree (port->interrupt_in_buffer);
+    }
+
+
+    /* return the minor range that this device had */
+    return_serial (serial);
+    mydbg("Exit fail %s\n", __FUNCTION__);
+
+    /* free up any memory that we allocated */
+    kfree (serial);
+    return -EIO;
+}
+
+
+
+
+
+
+//returns the serial_table array pointers that are taken
+//up in consecutive positions for each port to a common usb_serial structure
+//back to NULL
+static void return_serial(struct usb_serial *serial)
+{
+    int i;
+
+    mydbg("%s\n", __FUNCTION__);
+
+    if (serial == NULL)
+        return;
+
+    for (i = 0; i < serial->num_ports; ++i)
+    {
+        serial_table[serial->minor + i] = NULL;
+    }
+
+    return;
+}
+
+//Finds the first locatio int the serial_table array where it can fit
+//num_ports number of consecutive points to a common usb_serial structure
+//,allocates a stucture points to it in all the structures, and returns the index
+//to the first location in the array in the "minor" variable.
+
+static struct usb_serial *get_free_serial (int num_ports, int *minor)
+{
+    struct usb_serial *serial = NULL;
+    int i, j;
+    int good_spot;
+
+    mydbg("%s %d\n", __FUNCTION__, num_ports);
+
+    *minor = 0;
+    for (i = 0; i < SERIAL_TTY_MINORS; ++i)
+    {
+        if (serial_table[i])
+            continue;
+
+        good_spot = 1;
+        //find a spot in the array where you can fit consecutive positions
+        //to put the pointers to the usb_serail allocated structure for all
+        //the minor numbers (ie. ports)
+        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("%s - Out of memory", __FUNCTION__);
+            return NULL;
+        }
+        memset(serial, 0, sizeof(struct usb_serial));
+        serial_table[i] = serial;
+        *minor = i;
+        mydbg("%s - minor base = %d\n", __FUNCTION__, *minor);
+        //copy in the pointer into the array starting a the *minor position
+        //*minor is the index into the array
+        for (i = *minor+1; (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i)
+            serial_table[i] = serial;
+        return serial;
+    }
+    return NULL;
+}
+
+static int flip_that(   struct tty_struct *tty, __u16 UartNumber, struct usb_serial *serial)
+{
+    tty_flip_buffer_push(tty);
+    tty_schedule_flip(tty);
+    return 0;
+}
+
+//Handles processing and moving data to the tty layer
+static void port_sofrint(void *private)
+{
+    struct usb_serial_port *port = (struct usb_serial_port *)private;
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    struct tty_struct *tty = port->tty;
+    unsigned char *data = port->read_urb->transfer_buffer;
+    unsigned int UartNumber;
+    struct urb *urb = port->read_urb;
+    unsigned int RxCount = urb->actual_length;
+    int i, result;
+    int flag, flag_data;
+
+        //UartNumber = MINOR(port->tty->device) - serial->minor;
+        UartNumber = tty->index - serial->minor;
+
+        mydbg("%s - port %d\n", __FUNCTION__, port->number);
+        mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding);
+
+         if (port_paranoia_check (port, __FUNCTION__) != 0) {
+	         mydbg("%s - port_paranoia_check, exiting\n", __FUNCTION__);
+	         port->ReadBulkStopped = 1;
+	         return;
+         }
+
+        if (!serial) {
+            mydbg("%s - bad serial pointer, exiting\n", __FUNCTION__);
+            return;
+        }
+        if (port->closePending == 1)   //Were closing , stop reading
+        {
+            mydbg("%s - (port->closepending == 1\n", __FUNCTION__);
+            port->ReadBulkStopped = 1;
+            return;
+        }
+
+        //RxHolding is asserted by throttle, if we assert it, we're not receiving any more
+        //characters and let the box handle the flow control
+        if (port->RxHolding == 1) {
+            port->ReadBulkStopped = 1;
+            return;
+        }
+
+        if (urb->status) {
+            port->ReadBulkStopped = 1;
+
+            mydbg("%s - nonzero read bulk status received: %d\n", __FUNCTION__, urb->status);
+            return;
+        }
+
+
+        tty = port->tty;
+        mydbg("%s - port %d, tty =0x%p\n", __FUNCTION__, port->number, tty);
+
+
+        if (tty && RxCount) {
+            flag_data = 0;
+            for (i = 0; i < RxCount ; ++i) {
+                //Look ahead code here
+
+                if ((i <= (RxCount - 3)) && (THISCHAR == 0x1b)  && (NEXTCHAR == 0x1b)) {
+                    flag = 0;
+                    switch (THIRDCHAR) {
+                    case 0x00:
+                        //Line status change 4th byte must follow
+                        if (i > (RxCount - 4)) {
+                            mydbg("Illegal escape sequences in received data\n");
+                            break;
+                        }
+                        ProcessLineStatus(port, FOURTHCHAR);
+                        i += 3;
+                        flag = 1;
+                        break;
+
+                    case 0x01:
+                        //Modem status status change 4th byte must follow
+                        mydbg("Modem status status. \n");
+
+                        if (i > (RxCount - 4)) {
+                            mydbg("Illegal escape sequences in received data\n");
+                            break;
+                        }
+                        ProcessModemStatus(port, FOURTHCHAR);
+                        i += 3;
+                        flag = 1;
+                        break;
+                    case 0xff:
+                        mydbg("No status sequence. \n");
+
+                         ProcessRxChar(port, THISCHAR);
+                         ProcessRxChar(port, NEXTCHAR);
+                        i += 2;
+                        break;
+
+                    }//end switch
+                    if (flag == 1)
+                         continue;
+                } //endif
+
+				if(tty && urb->actual_length) {
+					tty_buffer_request_room(tty, 1);
+					tty_insert_flip_string(tty, (data + i), 1);
+				}
+
+
+            }//endfor
+
+            tty_flip_buffer_push(tty);
+
+        }//endif
+
+        /* Continue trying to always read  */
+        usb_fill_bulk_urb (port->read_urb, serial->dev,
+                           usb_rcvbulkpipe (serial->dev,
+                                            port->bulk_in_endpointAddress),
+                           port->read_urb->transfer_buffer,
+                           port->read_urb->transfer_buffer_length,
+                           qt_read_bulk_callback, port);
+        result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+        if (result)
+            mydbg("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+        else
+        {
+            if (tty && RxCount)
+               flip_that(tty, UartNumber, serial);
+        }
+
+
+        return;
+
+    }
+
+
+
+static void qt_read_bulk_callback(struct urb *urb)
+{
+
+    struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+
+
+   if (urb->status)
+   {
+
+    port->ReadBulkStopped = 1;
+    mydbg("%s - nonzero write bulk status received: %d\n", __FUNCTION__, urb->status);
+    return;
+   }
+
+    port_sofrint((void *) port);
+    schedule_work(&port->work);
+}
+
+
+static void ProcessRxChar(struct usb_serial_port *port, unsigned char Data){
+    struct tty_struct *tty;
+    struct urb *urb = port->read_urb;
+    tty = port->tty;
+    /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
+
+	if(tty && urb->actual_length)
+	{
+		tty_buffer_request_room(tty, 1);
+		tty_insert_flip_string(tty, &Data, 1);
+		//tty_flip_buffer_push(tty);
+
+
+	}
+
+    return;
+}
+
+static void ProcessLineStatus(struct usb_serial_port *port, unsigned char line_status){
+
+    port->shadowLSR = line_status & (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE |
+                                    SERIAL_LSR_BI);
+    return;
+}
+
+
+static void ProcessModemStatus(struct usb_serial_port *port, unsigned char modem_status){
+
+    port->shadowMSR = modem_status;
+    wake_up_interruptible(&port->wait);
+    return;
+}
+
+
+
+
+
+
+static void serqt_usb_disconnect(struct usb_interface *interface){
+    struct usb_serial *serial = usb_get_intfdata (interface);
+    //struct device *dev = &interface->dev;
+    struct usb_serial_port *port;
+    int i;
+
+    mydbg ("%s\n", __FUNCTION__);
+    if (serial)
+    {
+
+        serial->dev = NULL;
+
+        for (i = 0; i < serial->num_ports; ++i)
+            serial->port[i].open_count = 0;
+
+        for (i = 0; i < serial->num_bulk_in; ++i)
+        {
+            port = &serial->port[i];
+            if (port->read_urb)
+            {
+                usb_unlink_urb (port->read_urb);
+                usb_free_urb (port->read_urb);
+            }
+            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->write_urb)
+            {
+                usb_unlink_urb (port->write_urb);
+                usb_free_urb (port->write_urb);
+            }
+            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_urb)
+            {
+                usb_unlink_urb (port->interrupt_in_urb);
+                usb_free_urb (port->interrupt_in_urb);
+            }
+            if (port->interrupt_in_buffer)
+                kfree (port->interrupt_in_buffer);
+        }
+
+
+        /* return the minor range that this device had */
+        return_serial (serial);
+
+        /* free up any memory that we allocated */
+        kfree (serial);
+
+
+
+    } else
+    {
+        dev_info(&interface->dev, "device disconnected");
+    }
+
+
+}
+
+
+
+
+
+
+
+static struct usb_serial *get_serial_by_minor (unsigned int minor)
+{
+    return serial_table[minor];
+}
+
+/*****************************************************************************
+ * Driver tty interface functions
+ *****************************************************************************/
+static int serial_open (struct tty_struct *tty, struct file * filp){
+    struct usb_serial *serial;
+    struct usb_serial_port *port;
+    unsigned int portNumber;
+    int retval = 0;
+
+    mydbg("%s\n", __FUNCTION__);
+
+    /* 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));
+
+    /* get the serial object associated with this tty pointer */
+	serial = get_serial_by_minor(tty->index);
+
+
+    if (serial_paranoia_check (serial, __FUNCTION__))
+        return -ENODEV;
+
+
+    /* set up our port structure making the tty driver remember our port object, and us it */
+    portNumber = tty->index - serial->minor;
+    port = &serial->port[portNumber];
+    tty->driver_data = port;
+
+    down (&port->sem);
+    port->tty = tty;
+
+
+    ++port->open_count;
+   if (port->open_count == 1)
+    {
+        port->closePending = 0;
+          mydbg("%s port->closepending = 0\n", __FUNCTION__);
+
+        port->RxHolding = 0;
+        mydbg("%s port->RxHolding = 0\n", __FUNCTION__);
+
+        retval = qt_open(port, filp);
+    }
+
+    if (retval)
+    {
+        port->open_count = 0;
+    }
+    mydbg("%s returning port->closePending  = %d\n", __FUNCTION__, port->closePending);
+
+    up (&port->sem);
+    return retval;
+}
+/*****************************************************************************
+ *device's specific driver functions
+ *****************************************************************************/
+static int qt_open (struct usb_serial_port *port, struct file *filp){
+    struct usb_serial *serial = port->serial;
+    int result = 0;
+    unsigned int UartNumber;
+    struct qt_get_device_data DeviceData;
+    struct qt_open_channel_data ChannelData;
+    unsigned short default_divisor = 0x30; //gives 9600 baud rate
+    unsigned char  default_LCR = SERIAL_8_DATA; // 8, none , 1
+    int status = 0;
+
+
+
+
+    if (port_paranoia_check (port, __FUNCTION__))
+        return -ENODEV;
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    /* force low_latency on so that our tty_push actually forces the data through,
+       otherwise it is scheduled, and with high data rates (like with OHCI) data
+       can get lost. */
+    if (port->tty)
+        port->tty->low_latency = 0;
+
+
+    UartNumber = port->tty->index - serial->minor;
+
+    status = box_get_device(serial, &DeviceData);
+    if (status < 0)
+    {
+        mydbg(__FILE__"box_get_device failed\n");
+        return status;
+    }
+    serial->num_OpenCount++;
+    mydbg("%s serial->num_OpenCount  = %d\n", __FUNCTION__, serial->num_OpenCount);
+    //Open uart channel
+
+    //Port specific setups
+    status = BoxOPenCloseChannel(serial, UartNumber, 1, &ChannelData);
+    if (status < 0)
+    {
+         mydbg(__FILE__"BoxOPenCloseChannel failed\n");
+                 return status;
+    }
+    mydbg(__FILE__"BoxOPenCloseChannel completed.\n");
+
+    port->shadowLSR = ChannelData.line_status &
+                               (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE | SERIAL_LSR_BI);
+
+    port->shadowMSR = ChannelData.modem_status &
+                      (SERIAL_MSR_CTS | SERIAL_MSR_DSR | SERIAL_MSR_RI | SERIAL_MSR_CD);
+
+
+   //Set Baud rate to default and turn off (default)flow control here
+   status = BoxSetUart(serial, UartNumber, default_divisor, default_LCR);
+   if (status < 0)
+   {
+        mydbg(__FILE__"BoxSetUart failed\n");
+                return status;
+   }
+   mydbg(__FILE__"BoxSetUart completed.\n");
+
+
+  //Put this here to make it responsive to stty and defauls set by the tty layer
+  qt_set_termios(port, NULL);
+
+
+   //Initialize the wait que head
+   init_waitqueue_head(&(port->wait));
+
+    /* if we have a bulk endpoint, start reading from it */
+    if (serial->num_bulk_in)
+    {
+        /* Start reading from the device */
+        usb_fill_bulk_urb (port->read_urb, serial->dev,
+                           usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+                           port->read_urb->transfer_buffer,
+                           port->read_urb->transfer_buffer_length,
+                           qt_read_bulk_callback,
+                           port);
+
+        port->ReadBulkStopped = 0;
+
+        result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+
+        if (result)
+        {
+              err("%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
+              port->ReadBulkStopped = 1;
+        }
+
+    }
+
+    return result;
+}
+
+static void serial_close(struct tty_struct *tty, struct file * filp){
+    struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+
+    if (!serial)
+        return;
+
+    down (&port->sem);
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    /* if disconnect beat us to the punch here, there's nothing to do */
+    if (tty->driver_data)
+    {
+        if (!port->open_count)
+        {
+            mydbg ("%s - port not opened\n", __FUNCTION__);
+            goto exit;
+        }
+
+        --port->open_count;
+        if (port->open_count <= 0)
+        {
+            port->closePending = 1;
+            mydbg ("%s - port->closePending = 1\n", __FUNCTION__);
+
+            if (serial->dev)
+            {
+                qt_close(port, filp);
+                port->open_count = 0;
+            }
+        }
+
+    }
+
+    exit:
+    up (&port->sem);
+
+    mydbg("%s - %d return\n", __FUNCTION__, port->number);
+
+
+}
+
+static void qt_close (struct usb_serial_port *port, struct file *filp){
+    unsigned long jift = jiffies + 10 * HZ;
+    __u8  LSR_Value, MCR_Value;
+    struct usb_serial *serial = port->serial;
+    int status;
+    unsigned int UartNumber;
+
+    struct qt_open_channel_data ChannelData;
+    status = 0;
+    LSR_Value = 0;
+
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+    UartNumber = port->tty->index - serial->minor;
+
+            /* 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);
+
+
+    //wait up to 30 seconds for transmitter to empty
+    do
+    {
+        status = BoxGetRegister(serial,  UartNumber, LINE_STATUS_REGISTER, &LSR_Value);
+        if (status < 0)
+        {
+            mydbg(__FILE__"box_get_device failed\n");
+            break;
+        }
+
+        if ((LSR_Value & SERIAL_LSR_TEMT) && (port->ReadBulkStopped == 1))
+            break;
+        schedule();
+
+
+    }
+    while (jiffies <= jift);
+
+    if(jiffies > jift)
+        mydbg("%s - port %d timout of checking transmitter empty\n", __FUNCTION__, port->number);
+    else
+        mydbg("%s - port %d checking transmitter empty succeded\n", __FUNCTION__, port->number);
+
+
+
+    status = BoxGetRegister(serial,  UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value);
+    mydbg(__FILE__"BoxGetRegister MCR = 0x%x.\n", MCR_Value);
+
+
+    if (status >= 0)
+    {
+        MCR_Value &= ~(SERIAL_MCR_DTR | SERIAL_MCR_RTS);
+//        status = BoxSetRegister(serial, UartNumber, MODEM_CONTROL_REGISTER, MCR_Value);
+    }
+
+
+    //Close uart channel
+    status = BoxOPenCloseChannel(serial, UartNumber, 0, &ChannelData);
+    if(status < 0)
+        mydbg("%s - port %d BoxOPenCloseChannel failed.\n", __FUNCTION__, port->number);
+
+      serial->num_OpenCount--;
+
+
+}
+
+
+
+static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count)
+{
+    struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+    struct usb_serial *serial;
+    int retval = -EINVAL;
+    unsigned int UartNumber;
+    int from_user = 0;
+
+
+    serial = get_usb_serial (port, __FUNCTION__);
+    if(serial == NULL)
+        return -ENODEV;
+    //This can happen if we get disconnected a
+    if (port->open_count == 0)
+    {
+         return -ENODEV;
+    }
+    UartNumber = port->tty->index - serial->minor;
+
+    mydbg("%s - port %d, %d byte(s)\n", __FUNCTION__, port->number, count);
+    mydbg("%s - port->RxHolding =  %d\n", __FUNCTION__, port->RxHolding);
+
+    if (!port->open_count)
+    {
+        mydbg("%s - port not opened\n", __FUNCTION__);
+        goto exit;
+    }
+
+    retval = qt_write(port, from_user, buf, count);
+
+    exit:
+    return retval;
+}
+
+
+static int qt_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count){
+    int result;
+    unsigned int UartNumber;
+
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    if(serial == NULL)
+        return -ENODEV;
+
+
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    if (count == 0)
+    {
+        mydbg("%s - write request of 0 bytes\n", __FUNCTION__);
+        return(0);
+    }
+
+
+    UartNumber = port->tty->index - serial->minor;
+    /* only do something if we have a bulk out endpoint */
+    if (serial->num_bulk_out)
+    {
+        if (port->write_urb->status == -EINPROGRESS)
+        {
+            mydbg("%s - already writing\n", __FUNCTION__);
+            return(0);
+        }
+
+        count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
+
+        if (from_user)
+        {
+            if (copy_from_user(port->write_urb->transfer_buffer, buf, count))
+                return -EFAULT;
+        } else
+        {
+            memcpy (port->write_urb->transfer_buffer, buf, count);
+        }
+
+        //usb_serial_debug_data(__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
+
+        /* set up our urb */
+
+
+        usb_fill_bulk_urb (port->write_urb, serial->dev,
+                           usb_sndbulkpipe (serial->dev,
+                                            port->bulk_out_endpointAddress),
+                           port->write_urb->transfer_buffer, count,
+                           qt_write_bulk_callback, port);
+
+
+
+
+
+        /* send the data out the bulk port */
+        result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+        if (result)
+            mydbg("%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
+        else
+            result = count;
+
+        return result;
+    }
+
+    /* no bulk out, so return 0 bytes written */
+    return(0);
+}
+
+
+
+static void qt_write_bulk_callback(struct urb *urb)
+{
+    struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    if (!serial)
+    {
+        mydbg("%s - bad serial pointer, exiting\n", __FUNCTION__);
+        return;
+    }
+
+    if (urb->status)
+    {
+        mydbg("%s - nonzero write bulk status received: %d\n", __FUNCTION__, urb->status);
+        return;
+    }
+    //
+    port_softint(&port->work);
+    schedule_work(&port->work);
+
+    return;
+}
+
+
+static void port_softint(struct work_struct *work)
+{
+    struct usb_serial_port *port =
+		container_of(work, struct usb_serial_port, work);
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    struct tty_struct *tty;
+
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+
+
+    if (!serial)
+        return;
+
+
+    tty = port->tty;
+    if (!tty)
+        return;
+#if 0
+    if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
+    {
+        mydbg("%s - write wakeup call.\n", __FUNCTION__);
+        (tty->ldisc.write_wakeup)(tty);
+    }
+#endif
+
+    wake_up_interruptible(&tty->write_wait);
+}
+static int serial_write_room (struct tty_struct *tty)
+{
+    struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    int retval = -EINVAL;
+
+    if (!serial)
+        return -ENODEV;
+
+    down (&port->sem);
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    if (!port->open_count)
+    {
+        mydbg("%s - port not open\n", __FUNCTION__);
+        goto exit;
+    }
+
+    retval = qt_write_room(port);
+
+    exit:
+    up (&port->sem);
+    return retval;
+}
+static int qt_write_room (struct usb_serial_port *port)
+{
+    struct usb_serial *serial = port->serial;
+    int room = 0;
+    if (port->closePending == 1)
+    {
+        mydbg("%s - port->closePending == 1\n", __FUNCTION__);
+        return -ENODEV;
+    }
+
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    if (serial->num_bulk_out)
+    {
+        if (port->write_urb->status != -EINPROGRESS)
+            room = port->bulk_out_size;
+    }
+
+    mydbg("%s - returns %d\n", __FUNCTION__, room);
+    return(room);
+}
+static int serial_chars_in_buffer (struct tty_struct *tty)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+	int retval = -EINVAL;
+
+	if (!serial)
+		return -ENODEV;
+
+	down (&port->sem);
+
+	mydbg("%s = port %d\n", __FUNCTION__, port->number);
+
+	if (!port->open_count) {
+		mydbg("%s - port not open\n", __FUNCTION__);
+		goto exit;
+	}
+
+	retval = qt_chars_in_buffer(port);
+
+exit:
+	up (&port->sem);
+	return retval;
+}
+
+
+
+static int qt_chars_in_buffer (struct usb_serial_port *port)
+{
+    struct usb_serial *serial = port->serial;
+    int chars = 0;
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    if (serial->num_bulk_out)
+    {
+        if (port->write_urb->status == -EINPROGRESS)
+            chars = port->write_urb->transfer_buffer_length;
+    }
+
+    mydbg("%s - returns %d\n", __FUNCTION__, chars);
+    return(chars);
+}
+
+
+static int serial_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear)
+{
+
+    struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    int retval = -ENODEV;
+    unsigned int UartNumber;
+    mydbg("In %s \n", __FUNCTION__);
+
+    if (!serial)
+       return -ENODEV;
+
+
+    UartNumber = port->tty->index - serial->minor;
+
+
+    down (&port->sem);
+
+    mydbg("%s - port %d \n", __FUNCTION__, port->number);
+    mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding);
+
+    if (!port->open_count)
+    {
+        mydbg ("%s - port not open\n", __FUNCTION__);
+        goto exit;
+    }
+
+    retval = qt_tiocmset(port, file, set);
+
+    exit:
+    up (&port->sem);
+    return retval;
+}
+
+
+static int qt_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int value)
+{
+
+    __u8 MCR_Value;
+     int status;
+    unsigned int UartNumber;
+
+
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    if(serial == NULL)
+        return -ENODEV;
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+    /**************************************************************************************/
+    /**  TIOCMGET
+     */
+     UartNumber = port->tty->index - serial->minor;
+     status = BoxGetRegister(port->serial,  UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value);
+     if (status < 0)
+          return -ESPIPE;
+
+     //Turn off the RTS and DTR and loopbcck and then only
+     //trun on what was asked for
+     MCR_Value &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP);
+     if (value & TIOCM_RTS)
+          MCR_Value |= SERIAL_MCR_RTS;
+     if (value & TIOCM_DTR)
+          MCR_Value |= SERIAL_MCR_DTR;
+     if (value & TIOCM_LOOP)
+          MCR_Value |= SERIAL_MCR_LOOP;
+
+      status = BoxSetRegister(port->serial,  UartNumber, MODEM_CONTROL_REGISTER, MCR_Value);
+      if (status < 0)
+           return -ESPIPE;
+      else
+           return 0;
+}
+
+static int serial_tiocmget(struct tty_struct *tty, struct file *file)
+{
+
+    struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    int retval = -ENODEV;
+    unsigned int UartNumber;
+    mydbg("In %s \n", __FUNCTION__);
+
+    if (!serial)
+       return -ENODEV;
+
+
+    UartNumber = port->tty->index - serial->minor;
+
+
+    down (&port->sem);
+
+    mydbg("%s - port %d\n", __FUNCTION__, port->number);
+    mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding);
+
+    if (!port->open_count)
+    {
+        mydbg ("%s - port not open\n", __FUNCTION__);
+        goto exit;
+    }
+
+    retval = qt_tiocmget(port, file);
+
+    exit:
+    up (&port->sem);
+    return retval;
+}
+
+
+
+static int qt_tiocmget(struct usb_serial_port *port, struct file * file)
+{
+
+    __u8 MCR_Value;
+    __u8 MSR_Value;
+    unsigned int result = 0;
+    int status;
+    unsigned int UartNumber;
+    struct tty_struct *	tty;
+
+
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    if(serial == NULL)
+        return -ENODEV;
+    tty = port->tty;
+
+    mydbg("%s - port %d, tty =0x%p\n", __FUNCTION__, port->number, tty);
+
+    /**************************************************************************************/
+    /**  TIOCMGET
+     */
+     UartNumber = port->tty->index - serial->minor;
+     status = BoxGetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value);
+     if (status >= 0)
+     {
+         status = BoxGetRegister(port->serial,  UartNumber, MODEM_STATUS_REGISTER, &MSR_Value);
+
+     }
+
+     if (status >= 0)
+     {
+         result =  ((MCR_Value & SERIAL_MCR_DTR)  ? TIOCM_DTR: 0)
+                       //DTR IS SET
+                  | ((MCR_Value & SERIAL_MCR_RTS)  ? TIOCM_RTS: 0)
+                      //RTS IS SET
+                  | ((MSR_Value & SERIAL_MSR_CTS)  ? TIOCM_CTS: 0)
+                      //CTS is set
+                  | ((MSR_Value & SERIAL_MSR_CD)  ? TIOCM_CAR: 0)
+                      //Carrier detect is set
+                  | ((MSR_Value & SERIAL_MSR_RI)  ? TIOCM_RI: 0)
+                     //Ring indicator set
+                  | ((MSR_Value & SERIAL_MSR_DSR)  ? TIOCM_DSR: 0);
+                     //DSR is set
+         return result;
+
+    }
+     else
+         return -ESPIPE;
+     //endif tatus => 0
+}
+
+
+
+static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
+{
+
+    struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    int retval = -ENODEV;
+    unsigned int UartNumber;
+    mydbg("In %s \n", __FUNCTION__);
+
+    if (!serial)
+       return -ENODEV;
+
+
+    UartNumber = port->tty->index - serial->minor;
+
+
+    down (&port->sem);
+
+    mydbg("%s - port %d, cmd 0x%.4x\n", __FUNCTION__, port->number, cmd);
+    mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding);
+
+    if (!port->open_count)
+    {
+        mydbg ("%s - port not open\n", __FUNCTION__);
+        goto exit;
+    }
+
+    retval = qt_ioctl(port, file, cmd, arg);
+
+    exit:
+    up (&port->sem);
+    return retval;
+}
+static int qt_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
+{
+    __u8 MCR_Value;
+    __u8 MSR_Value;
+    unsigned short Prev_MSR_Value;
+    unsigned int value, result = 0;
+    int status;
+    unsigned int UartNumber;
+    struct tty_struct *	tty;
+
+
+    struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    if(serial == NULL)
+        return -ENODEV;
+    tty = port->tty;
+
+    mydbg("%s - port %d, tty =0x%p\n", __FUNCTION__, port->number, tty);
+
+    /**************************************************************************************/
+    /**  TIOCMGET
+     */
+     UartNumber = port->tty->index - serial->minor;
+
+    if(cmd == TIOCMGET)
+    {
+        MCR_Value = port->shadowMCR;
+        MSR_Value = port->shadowMSR;
+
+        {
+            result =  ((MCR_Value & SERIAL_MCR_DTR)  ? TIOCM_DTR: 0)
+                          //DTR IS SET
+                     | ((MCR_Value & SERIAL_MCR_RTS)  ? TIOCM_RTS: 0)
+                         //RTS IS SET
+                     | ((MSR_Value & SERIAL_MSR_CTS)  ? TIOCM_CTS: 0)
+                         //CTS is set
+                     | ((MSR_Value & SERIAL_MSR_CD)  ? TIOCM_CAR: 0)
+                         //Carrier detect is set
+                     | ((MSR_Value & SERIAL_MSR_RI)  ? TIOCM_RI: 0)
+                        //Ring indicator set
+                     | ((MSR_Value & SERIAL_MSR_DSR)  ? TIOCM_DSR: 0);
+                        //DSR is set
+            if(copy_to_user((unsigned int *)arg, &result, sizeof(unsigned int)))
+                return -EFAULT;
+            return 0;
+
+       }//endif tatus => 0
+
+    }//endif(cmd == TIOCMGET)
+    /**************************************************************************************/
+   /**  End TIOCMGET
+   */
+    /**************************************************************************************/
+    /**  TIOCMBIS, TIOCMBIC, AND TIOCMSET     */
+
+    /**************************************************************************************/
+
+    if(cmd == TIOCMBIS || cmd == TIOCMBIC || cmd == TIOCMSET)
+    {
+        status = BoxGetRegister(port->serial,  UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value);
+        if (status < 0)
+            return -ESPIPE;
+        if (copy_from_user(&value, (unsigned int *)arg, sizeof(unsigned int)))
+            return -EFAULT;
+
+        switch (cmd)
+        {
+        case TIOCMBIS:
+            if (value & TIOCM_RTS)
+                MCR_Value |= SERIAL_MCR_RTS;
+            if (value & TIOCM_DTR)
+                MCR_Value |= SERIAL_MCR_DTR;
+            if (value & TIOCM_LOOP)
+                MCR_Value |= SERIAL_MCR_LOOP;
+            break;
+        case TIOCMBIC:
+            if (value & TIOCM_RTS)
+                MCR_Value &= ~SERIAL_MCR_RTS;
+            if (value & TIOCM_DTR)
+                MCR_Value &= ~SERIAL_MCR_DTR;
+            if (value & TIOCM_LOOP)
+                MCR_Value &= ~SERIAL_MCR_LOOP;
+            break;
+        case TIOCMSET:
+            //Turn off the RTS and DTR and loopbcck and then only
+            //trun on what was asked for
+            MCR_Value &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP);
+            if (value & TIOCM_RTS)
+                 MCR_Value |= SERIAL_MCR_RTS;
+             if (value & TIOCM_DTR)
+                 MCR_Value |= SERIAL_MCR_DTR;
+             if (value & TIOCM_LOOP)
+                 MCR_Value |= SERIAL_MCR_LOOP;
+             break;
+        default:
+            break;
+
+        }
+        status = BoxSetRegister(port->serial,  UartNumber, MODEM_CONTROL_REGISTER, MCR_Value);
+        if (status < 0)
+              return -ESPIPE;
+        else
+        {
+            port->shadowMCR = MCR_Value;
+            return 0;
+        }
+
+
+    }
+    /**************************************************************************************/
+   /**   TIOCMBIS, TIOCMBIC, AND TIOCMSET    end
+   */
+    /**************************************************************************************/
+
+    if(cmd == TIOCMIWAIT)
+    {
+        DECLARE_WAITQUEUE(wait, current);
+        Prev_MSR_Value = port->shadowMSR  & SERIAL_MSR_MASK;
+        while(1)
+        {
+            add_wait_queue(&port->wait, &wait);
+            set_current_state(TASK_INTERRUPTIBLE);
+            schedule();
+            remove_wait_queue(&port->wait, &wait);
+            /* see if a signal woke us up */
+            if(signal_pending(current))
+                return -ERESTARTSYS;
+            MSR_Value = port->shadowMSR & SERIAL_MSR_MASK;
+            if(MSR_Value == Prev_MSR_Value)
+                return -EIO;  //no change error
+
+            if((arg & TIOCM_RNG && ((Prev_MSR_Value & SERIAL_MSR_RI) ==
+                                       (MSR_Value & SERIAL_MSR_RI))) ||
+              (arg & TIOCM_DSR && ((Prev_MSR_Value & SERIAL_MSR_DSR) ==
+                                       (MSR_Value & SERIAL_MSR_DSR))) ||
+              (arg & TIOCM_CD && ((Prev_MSR_Value & SERIAL_MSR_CD) ==
+                                       (MSR_Value & SERIAL_MSR_CD))) ||
+              (arg & TIOCM_CTS && ((Prev_MSR_Value & SERIAL_MSR_CTS) ==
+                                         (MSR_Value & SERIAL_MSR_CTS))))
+            {
+                return 0;
+            }
+
+        }//endwhile
+
+    }
+    mydbg("%s -No ioctl for that one.  port = %d\n", __FUNCTION__, port->number);
+
+
+    return -ENOIOCTLCMD;
+}
+
+static void serial_set_termios (struct tty_struct *tty, struct ktermios *old)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+
+	if (!serial)
+		return;
+
+	down (&port->sem);
+
+	mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+	if (!port->open_count) {
+		mydbg("%s - port not open\n", __FUNCTION__);
+		goto exit;
+	}
+
+	/* pass on to the driver specific version of this function if it is available */
+ 		qt_set_termios(port, old);
+
+exit:
+	up (&port->sem);
+}
+
+static void	qt_set_termios(struct usb_serial_port *port, struct ktermios *old_termios)
+{
+     unsigned int cflag;
+     int baud, divisor, remainder;
+     unsigned char LCR_change_to = 0;
+     struct tty_struct *tty;
+     int status;
+     struct usb_serial *serial;
+     __u16 UartNumber;
+     __u16 tmp, tmp2;
+
+      mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+     tmp = port->tty->index;
+     mydbg("%s - MINOR(port->tty->index) =  %d\n", __FUNCTION__, tmp);
+
+
+     serial = port->serial;
+     tmp2 = serial->minor;
+     mydbg("%s - serial->minor =  %d\n", __FUNCTION__, tmp2);
+
+
+
+     UartNumber = port->tty->index - serial->minor;
+
+     tty = port->tty;
+
+     cflag = tty->termios->c_cflag;
+
+     if (old_termios)
+     {
+         if((cflag == old_termios->c_cflag) && (RELEVANT_IFLAG(tty->termios->c_iflag) ==
+                                                RELEVANT_IFLAG(old_termios->c_iflag)))
+         {
+             mydbg("%s - Nothing to change\n", __FUNCTION__);
+             return;
+         }
+
+
+     }
+
+     mydbg("%s - 3\n", __FUNCTION__);
+
+     switch(cflag)
+     {
+     case CS5:
+         LCR_change_to |= SERIAL_5_DATA;
+         break;
+     case CS6:
+         LCR_change_to |= SERIAL_6_DATA;
+         break;
+     case CS7:
+         LCR_change_to |= SERIAL_7_DATA;
+         break;
+     default:
+     case CS8:
+         LCR_change_to |= SERIAL_8_DATA;
+         break;
+     }
+
+     //Parity stuff
+     if(cflag & PARENB)
+     {
+         if(cflag & PARODD)
+             LCR_change_to |= SERIAL_ODD_PARITY;
+         else
+             LCR_change_to |= SERIAL_EVEN_PARITY;
+     }
+     if(cflag & CSTOPB)
+         LCR_change_to |= SERIAL_TWO_STOPB;
+     else
+         LCR_change_to |= SERIAL_TWO_STOPB;
+
+     mydbg("%s - 4\n", __FUNCTION__);
+     //Thats the LCR stuff, go ahead and set it
+     baud = tty_get_baud_rate(tty);
+     if (!baud) {
+         /* pick a default, any default... */
+         baud = 9600;
+     }
+
+     mydbg("%s - got baud = %d\n", __FUNCTION__, baud);
+
+
+     divisor = MAX_BAUD_RATE / baud;
+     remainder = MAX_BAUD_RATE % baud;
+     //Round to nearest divisor
+     if(((remainder * 2) >= baud) && (baud != 110))
+          divisor++;
+
+    //Set Baud rate to default and turn off (default)flow control here
+     status = BoxSetUart(serial, UartNumber, (unsigned short) divisor, LCR_change_to);
+     if (status < 0)
+     {
+        mydbg(__FILE__"BoxSetUart failed\n");
+                return;
+     }
+     //************************Now determine flow control
+
+     if(cflag & CRTSCTS)
+     {
+         mydbg("%s - Enabling HW flow control port %d\n", __FUNCTION__, port->number);
+
+         //Enable  RTS/CTS flow control
+         status = BoxSetHW_FlowCtrl(serial, UartNumber, 1);
+
+         if (status < 0)
+         {
+              mydbg(__FILE__"BoxSetHW_FlowCtrl failed\n");
+              return;
+         }
+     }
+     else
+     {
+         //Disable RTS/CTS flow control
+         mydbg("%s - disabling HW flow control port %d\n", __FUNCTION__, port->number);
+
+         status = BoxSetHW_FlowCtrl(serial, UartNumber, 0);
+         if (status < 0)
+         {
+              mydbg(__FILE__"BoxSetHW_FlowCtrl failed\n");
+              return;
+         }
+
+
+     }
+
+     //*************************************************
+     /* if we are implementing XON/XOFF, set the start and stop character in the device */
+	if (I_IXOFF(tty) || I_IXON(tty))
+    {
+		unsigned char stop_char  = STOP_CHAR(tty);
+		unsigned char start_char = START_CHAR(tty);
+        status = BoxSetSW_FlowCtrl(serial, UartNumber, stop_char, start_char);
+        if(status < 0)
+            mydbg(__FILE__"BoxSetSW_FlowCtrl (enabled) failed\n");
+
+    }
+    else
+    {
+        //disable SW flow control
+        status = BoxDisable_SW_FlowCtrl(serial, UartNumber);
+        if(status < 0)
+           mydbg(__FILE__"BoxSetSW_FlowCtrl (diabling) failed\n");
+
+    }
+
+
+
+}
+/****************************************************************************
+* BoxGetRegister
+*	issuse a GET_REGISTER vendor-spcific request on the default control pipe
+*	If successful, fills in the  pValue with the register value asked for
+****************************************************************************/
+static int BoxGetRegister(struct usb_serial *serial,  unsigned short Uart_Number,
+                          unsigned short Register_Num, __u8 *pValue )
+{
+    int result;
+    __u16 current_length;
+
+
+    current_length = sizeof(struct qt_get_device_data);
+
+    result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), QT_GET_SET_REGISTER,
+                              0xC0, Register_Num, Uart_Number, (void *)pValue, sizeof(*pValue), 300);
+
+    return result;
+}
+/****************************************************************************
+* BoxSetRegister
+*	issuse a GET_REGISTER vendor-spcific request on the default control pipe
+*	If successful, fills in the  pValue with the register value asked for
+****************************************************************************/
+static int BoxSetRegister(struct usb_serial *serial,  unsigned short Uart_Number,
+                          unsigned short Register_Num, unsigned short Value )
+{
+    int result;
+    unsigned short RegAndByte;
+
+
+    RegAndByte = Value;
+    RegAndByte = RegAndByte << 8;
+    RegAndByte = RegAndByte + Register_Num;
+
+//    result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_GET_SET_REGISTER,
+//                           0xC0, Register_Num, Uart_Number, NULL, 0, 300);
+
+
+    result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_GET_SET_REGISTER,
+                               0x40, RegAndByte, Uart_Number, NULL,0, 300);
+
+
+    return result;
+}
+
+
+
+/**
+ * box_get_device
+ *   Issue a GET_DEVICE vendor-specific request on the default control pipe If
+ *   successful, fills in the qt_get_device_data structure pointed to by
+ *   device_data, otherwise return a negative error number of the problem.
+ */
+static int box_get_device(struct usb_serial *serial,
+			  struct qt_get_device_data *device_data)
+{
+	int result;
+	__u16 current_length;
+	unsigned char *transfer_buffer;
+
+	current_length = sizeof(struct qt_get_device_data);
+	transfer_buffer = kmalloc(current_length, GFP_KERNEL);
+	if (!transfer_buffer)
+		return -ENOMEM;
+
+	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+				 QT_SET_GET_DEVICE, 0xc0, 0, 0,
+				 transfer_buffer, current_length, 300);
+	if (result > 0)
+		memcpy(device_data, transfer_buffer, current_length);
+	kfree(transfer_buffer);
+
+	return result;
+}
+
+/**
+ * box_set_device
+ *   Issue a SET_DEVICE vendor-specific request on the default control pipe If
+ *   successful returns the number of bytes written, otherwise it returns a
+ *   negative error number of the problem.
+ */
+static int box_set_device(struct usb_serial *serial, struct qt_get_device_data *device_data)
+{
+	int result;
+	__u16 length;
+	__u16 PortSettings;
+
+	PortSettings = ((__u16)(device_data->portb));
+	PortSettings = (PortSettings << 8);
+	PortSettings += ((__u16)(device_data->porta));
+
+	length = sizeof(struct qt_get_device_data);
+	mydbg("%s - PortSettings = 0x%x\n", __FUNCTION__, PortSettings);
+
+	result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+				 QT_SET_GET_DEVICE, 0x40, PortSettings,
+				 0, NULL, 0, 300);
+	return result;
+}
+
+/****************************************************************************
+ * BoxOPenCloseChannel
+ * This funciotn notifies the device that the device driver wishes to open a particular UART channel. its
+ * purpose is to allow the device driver and the device to synchronize state information.
+ * OpenClose = 1 for open , 0 for close
+  ****************************************************************************/
+static int BoxOPenCloseChannel(struct usb_serial *serial, __u16 Uart_Number, __u16 OpenClose, struct qt_open_channel_data *pDeviceData)
+{
+    int result;
+    __u16 length;
+    __u8  Direcion;
+    unsigned int pipe;
+    length = sizeof(struct qt_open_channel_data);
+
+    if (OpenClose == 1)   //IF OPENING
+    {
+       Direcion = USBD_TRANSFER_DIRECTION_IN;
+       pipe = usb_rcvctrlpipe(serial->dev, 0);
+       result = usb_control_msg (serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL,
+                          Direcion, OpenClose, Uart_Number, pDeviceData, length, 300);
+
+
+    }
+    else
+    {
+       Direcion = USBD_TRANSFER_DIRECTION_OUT;
+       pipe = usb_sndctrlpipe(serial->dev, 0);
+       result = usb_control_msg (serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL,
+                          Direcion, OpenClose, Uart_Number, NULL, 0, 300);
+
+    }
+
+
+
+    return result;
+}
+
+/****************************************************************************
+ *  BoxSetPrebufferLevel
+   TELLS BOX WHEN TO ASSERT FLOW CONTROL
+ ****************************************************************************/
+static int BoxSetPrebufferLevel(struct usb_serial *serial)
+{
+	int result;
+	__u16 buffer_length;
+
+	buffer_length = PREFUFF_LEVEL_CONSERVATIVE;
+	result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+				 QT_GET_SET_PREBUF_TRIG_LVL, 0x40,
+				 buffer_length, 0, NULL, 0, 300);
+	return result;
+}
+
+
+
+/****************************************************************************
+ *  BoxSetATC
+   TELLS BOX WHEN TO ASSERT automatic transmitter control
+   ****************************************************************************/
+static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode)
+{
+    int result;
+    __u16 buffer_length;
+
+
+    buffer_length = PREFUFF_LEVEL_CONSERVATIVE;
+
+    result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_SET_ATF,
+                              0x40, n_Mode, 0, NULL, 0, 300);
+
+    return result;
+}
+
+/****************************************************************************
+* BoxSetUart
+*	issuse a SET_UART vendor-spcific request on the default control pipe
+*	If successful sets baud rate divisor and LCR value
+****************************************************************************/
+static int BoxSetUart(struct usb_serial *serial,  unsigned short Uart_Number,
+                                  unsigned short default_divisor, unsigned char default_LCR )
+{
+    int result;
+    unsigned short UartNumandLCR;
+
+    UartNumandLCR = (default_LCR << 8) + Uart_Number;
+
+   result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_GET_SET_UART,
+                                      0x40, default_divisor, UartNumandLCR, NULL, 0, 300);
+
+   return result;
+}
+
+
+static int BoxSetHW_FlowCtrl(struct usb_serial *serial,  unsigned int UartNumber, int bSet)
+{
+    __u8 MCR_Value = 0;
+    __u8 MSR_Value = 0, MOUT_Value = 0;
+    struct usb_serial_port *port;
+    unsigned int status;
+
+    port = serial->port;
+
+    if (bSet == 1)
+    {
+         MCR_Value =  SERIAL_MCR_RTS;   //flow control, box will clear RTS line to prevent remote
+    }                                   //device from xmitting more chars
+    else
+    {                                   //no flow control to remote device
+        MCR_Value =  0;
+
+    }
+    MOUT_Value = MCR_Value << 8;
+
+
+    if(bSet == 1)
+    {
+         MSR_Value = SERIAL_MSR_CTS;   //flow control, box will inhibit xmit data if CTS line is asserted
+    }
+    else
+    {
+        MSR_Value = 0;                //Box will not inhimbe xmit data due to CTS line
+    }
+    MOUT_Value |= MSR_Value;
+
+
+   status = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_HW_FLOW_CONTROL_MASK,
+                           0x40, MOUT_Value, UartNumber, NULL, 0, 300);
+   return status;
+
+}
+
+static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber,  unsigned char stop_char,  unsigned char start_char)
+{
+    __u16 nSWflowout;
+    int result;
+
+    nSWflowout = start_char << 8;
+    nSWflowout = (unsigned short)stop_char;
+
+    result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_SW_FLOW_CONTROL_MASK,
+                        0x40, nSWflowout, UartNumber, NULL, 0, 300);
+    return result;
+
+}
+static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber)
+{
+    int result;
+
+
+    result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_SW_FLOW_CONTROL_DISABLE,
+                        0x40, 0, UartNumber, NULL, 0, 300);
+    return result;
+
+}
+
+
+/*****************************************************************************
+ * SerialThrottle
+ *	this function is called by the tty driver when it wants to stop the data
+ *	being read from the port.
+ *****************************************************************************/
+
+
+static void serial_throttle (struct tty_struct * tty)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+   	mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+	if (!serial)
+		return;
+
+	down (&port->sem);
+
+
+	if (!port->open_count) {
+		mydbg ("%s - port not open\n", __FUNCTION__);
+		goto exit;
+	}
+    //shut down any bulk reads that may be going on
+//    usb_unlink_urb (port->read_urb);
+	/* pass on to the driver specific version of this function */
+    port->RxHolding = 1;
+    mydbg("%s - port->RxHolding = 1\n", __FUNCTION__);
+
+
+exit:
+	up (&port->sem);
+    return;
+}
+
+static void serial_unthrottle (struct tty_struct * tty)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    unsigned int result;
+
+	if (!serial)
+		return;
+	down (&port->sem);
+
+	mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+	if (!port->open_count) {
+		mydbg ("%s - port not open\n", __FUNCTION__);
+		goto exit;
+	}
+
+    if(port->RxHolding == 1)
+    {
+        mydbg ("%s -port->RxHolding == 1\n", __FUNCTION__);
+
+        port->RxHolding = 0;
+        mydbg ("%s - port->RxHolding = 0\n", __FUNCTION__);
+
+        /* if we have a bulk endpoint, start it up */
+        if ((serial->num_bulk_in) && (port->ReadBulkStopped == 1))
+        {
+            /* Start reading from the device */
+            usb_fill_bulk_urb (port->read_urb, serial->dev,
+                               usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+                               port->read_urb->transfer_buffer,
+                               port->read_urb->transfer_buffer_length,
+                               qt_read_bulk_callback,
+                               port);
+            result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+            if (result)
+                err("%s - failed restarting read urb, error %d", __FUNCTION__, result);
+        }
+    }
+  exit:
+    up (&port->sem);
+    return;
+
+
+
+}
+
+
+static int serial_break (struct tty_struct *tty, int break_state)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+    __u16 UartNumber, Break_Value;
+    unsigned int result;
+
+    UartNumber = port->tty->index - serial->minor;
+	if (!serial)
+		return -ENODEV;
+
+    if(break_state == -1)
+        Break_Value = 1;
+    else
+        Break_Value = 0;
+
+	down (&port->sem);
+
+	mydbg("%s - port %d\n", __FUNCTION__, port->number);
+
+	if (!port->open_count) {
+		mydbg("%s - port not open\n", __FUNCTION__);
+		goto exit;
+	}
+
+    result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_BREAK_CONTROL,
+                            0x40, Break_Value, UartNumber, NULL, 0, 300);
+
+exit:
+	up (&port->sem);
+	return 0;
+}
+
+
+
+
+static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+	struct usb_serial *serial;
+	int length = 0;
+	int i;
+	off_t begin = 0;
+
+	mydbg("%s\n", __FUNCTION__);
+	length += sprintf (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION);
+	for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) {
+		serial = get_serial_by_minor(i);
+		if (serial == NULL)
+			continue;
+
+		length += sprintf (page+length, "%d:\n", i);
+		length += sprintf (page+length, " vendor:%04x product:%04x\n", serial->vendor, serial->product);
+		length += sprintf (page+length, " num_ports:%d\n", serial->num_ports);
+		length += sprintf (page+length, " port:%d\n", i - serial->minor + 1);
+
+//		usb_make_path(serial->dev, tmp, sizeof(tmp));
+//		length += sprintf (page+length, " path:%s", tmp);
+
+		length += sprintf (page+length, "\n");
+		if ((length + begin) > (off + count))
+			goto done;
+		if ((length + begin) < off) {
+			begin += length;
+			length = 0;
+		}
+	}
+	*eof = 1;
+done:
+	if (off >= (length + begin))
+		return 0;
+	*start = page + (off-begin);
+	return ((count < begin+length-off) ? count : begin+length-off);
+}
+
+
+
+int ioctl_serial_usb (struct inode *innod, struct file *filp, unsigned int cmd,
+                      unsigned long arg)
+{
+
+    unsigned    err;
+    unsigned    ucOPR_NewValue, uc_Value;
+    int *p_Num_of_adapters, counts, index, *p_QMCR_Value;
+    struct identity *p_Identity_of;
+    struct identity  Identity_of;
+    struct usb_serial    *lastserial, *serial;
+
+    mydbg(KERN_DEBUG"ioctl_serial_usb  cmd =\n");
+     if (_IOC_TYPE(cmd) != SERIALQT_PCI_IOC_MAGIC)
+        return -ENOTTY;
+    if (_IOC_NR(cmd) > SERIALQT_IOC_MAXNR)
+        return -ENOTTY;
+    mydbg(KERN_DEBUG"ioctl_serial_usb  cmd = 0x%x\n", cmd);
+        err = 0;
+    switch (cmd)
+    {
+
+
+    case SERIALQT_WRITE_QMCR:
+        err = -ENOTTY; //initialize as error so if we don't find this one we give//an error.
+        index = arg >> 16;
+        counts = 0;
+
+        ucOPR_NewValue = arg;
+
+
+        err =  EmulateWriteQMCR_Reg(index,  ucOPR_NewValue);
+        break;
+
+    case SERIALQT_READ_QMCR:
+        err = -ENOTTY; //initialize as error so if we don't find this one we give
+        //an error.
+        p_QMCR_Value =  (int *)arg;
+        index = arg >> 16;
+        counts = 0;
+
+
+
+        err =  EmulateReadQMCR_Reg(index, &uc_Value);
+        if (err == 0)
+        {
+            err = put_user(uc_Value, p_QMCR_Value);
+        }
+        break;
+
+    case SERIALQT_GET_NUMOF_UNITS:
+        p_Num_of_adapters = (int *)arg;
+        counts = 0; //Initialize counts to zero
+        //struct usb_serial    *lastserial = serial_table[0], *serial;
+        lastserial = serial_table[0];
+
+        mydbg(KERN_DEBUG"SERIALQT_GET_NUMOF_UNITS \n");
+        //if first pointer is nonull, we at least have one box
+        if(lastserial)
+            counts = 1;  //we at least have one box
+
+        for (index = 1; index < SERIAL_TTY_MINORS ; index++)
+        {
+                serial = serial_table[index];
+                if(serial)
+                {
+                     if(serial != lastserial)
+                     {
+                         //we had a change in the array, hence another box is there
+                         lastserial = serial;
+                         counts++;
+                     }
+                }
+                else
+                    break;
+        }
+
+        mydbg(KERN_DEBUG"ioctl_serial_usb writting counts = %d", counts);
+
+        err = put_user(counts, p_Num_of_adapters);
+
+
+        break;
+    case SERIALQT_GET_THIS_UNIT:
+        counts = 0;
+         p_Identity_of = (struct identity *)arg;
+         //copy user structure to local variable
+        get_user(Identity_of.index, &p_Identity_of->index);
+        mydbg(KERN_DEBUG"SERIALQT_GET_THIS_UNIT Identity_of.index\n");
+        mydbg(KERN_DEBUG"SERIALQT_GET_THIS_UNIT Identity_of.index= 0x%x\n", Identity_of.index);
+
+        err = -ENOTTY; //initialize as error so if we don't find this one we give
+                       //an error.
+        serial = find_the_box(Identity_of.index);
+        if(serial)
+        {
+            err = put_user(serial->product, &p_Identity_of->n_identity);
+
+        }
+        break;
+
+    case SERIALQT_IS422_EXTENDED:
+        err = -ENOTTY; //initialize as error so if we don't find this one we give
+        mydbg(KERN_DEBUG"SERIALQT_IS422_EXTENDED \n");
+        //an error.
+        index = arg >> 16;
+
+
+        counts = 0;
+
+        mydbg(KERN_DEBUG"SERIALQT_IS422_EXTENDED, looking Identity_of.indext = 0x%x\n",index);
+         serial = find_the_box(index);
+        if(serial)
+        {
+            mydbg("%s index = 0x%x, serial = 0x%p\n", __FUNCTION__, index, serial);
+            for (counts = 0; serqt_422_table[counts] != 0; counts++)
+            {
+
+                mydbg("%s serial->product = = 0x%x, serqt_422_table[counts] = 0x%x\n", __FUNCTION__, serial->product,  serqt_422_table[counts]);
+                if(serial->product == serqt_422_table[counts])
+                {
+                    err = 0;
+
+                    mydbg("%s found match for 422extended\n", __FUNCTION__);
+                    break;
+                }
+            }
+        }
+        break;
+
+
+
+
+    default:
+        err = -ENOTTY;
+
+
+
+
+    } //End switch
+
+    mydbg("%s returning err = 0x%x\n", __FUNCTION__, err);
+    return err;
+}
+
+
+
+static struct usb_serial *find_the_box(unsigned int index)
+{
+    struct usb_serial *lastserial, *foundserial, *serial;
+    int counts = 0, index2;
+    lastserial = serial_table[0];
+    foundserial = NULL;
+    for (index2 = 0; index2 < SERIAL_TTY_MINORS ; index2++)
+    {
+            serial = serial_table[index2];
+
+            mydbg("%s index = 0x%x, index2 = 0x%x, serial = 0x%p\n", __FUNCTION__, index, index2, serial);
+
+            if(serial)
+            {
+                //first see if this is the unit we'er looking for
+                mydbg("%s inside if(serial) counts = 0x%x , index = 0x%x\n", __FUNCTION__, counts, index);
+                if(counts == index)
+                {
+                    //we found the one we're looking for, copythe product Id to user
+
+                    mydbg("%s we found the one we're looking for serial = 0x%p\n", __FUNCTION__, serial);
+                    foundserial = serial;
+                    break;
+                }
+
+                if(serial != lastserial)
+                {
+                     //when we have a change in the pointer
+                     lastserial = serial;
+                     counts++;
+                }
+            }
+            else
+                break;  // no matches
+    }
+
+    mydbg("%s returning foundserial = 0x%p\n", __FUNCTION__, foundserial);
+    return foundserial;
+}
+
+
+
+ static int EmulateWriteQMCR_Reg(int index, unsigned uc_value)
+ {
+
+     __u16 ATC_Mode = 0;
+     struct usb_serial *serial;
+     int status;
+     struct qt_get_device_data DeviceData;
+     unsigned uc_temp = 0;
+     mydbg("Inside %s, uc_value = 0x%x\n", __FUNCTION__, uc_value);
+
+     DeviceData.porta = 0;
+     DeviceData.portb = 0;
+     serial = find_the_box(index);
+     //Determine Duplex mode
+     if(!(serial))
+         return -ENOTTY;
+     status = box_get_device(serial, &DeviceData);
+     if (status < 0)
+     {
+       mydbg(__FILE__"box_set_device failed\n");
+       return status;
+     }
+
+     uc_temp = uc_value & QMCR_HALF_DUPLEX_MASK;
+     switch (uc_temp)
+     {
+     case QMCR_FULL_DUPLEX:
+         DeviceData.porta &= ~DUPMODE_BITS;
+         DeviceData.porta |= FULL_DUPLEX;
+         ATC_Mode = ATC_DISABLED;
+         break;
+     case QMCR_HALF_DUPLEX_RTS:
+         DeviceData.porta &= ~DUPMODE_BITS;
+         DeviceData.porta |= HALF_DUPLEX_RTS;
+         ATC_Mode = ATC_RTS_ENABLED;
+         break;
+     case QMCR_HALF_DUPLEX_DTR:
+         DeviceData.porta &= ~DUPMODE_BITS;
+         DeviceData.porta |= HALF_DUPLEX_DTR;
+         ATC_Mode = ATC_DTR_ENABLED;
+         break;
+     default:
+         break;
+     }
+
+     uc_temp = uc_value & QMCR_CONNECTOR_MASK;
+     switch (uc_temp)
+     {
+     case QMCR_MODEM_CONTROL:
+         DeviceData.portb &= ~LOOPMODE_BITS; //reset connection bits
+         DeviceData.portb |= MODEM_CTRL;
+         break;
+     case QMCR_ALL_LOOPBACK:
+         DeviceData.portb &= ~LOOPMODE_BITS; //reset connection bits
+         DeviceData.portb |= ALL_LOOPBACK;
+         break;
+     }
+
+     mydbg(__FILE__"Calling box_set_device with failed\n");
+     status = box_set_device(serial, &DeviceData);
+     if (status < 0)
+     {
+         mydbg(__FILE__"box_set_device failed\n");
+         return status;
+     }
+
+     if(uc_value & QMCR_RX_EN_MASK) //This bit (otherwise unused) i'll used  to detect whether ATC is selected
+     {
+
+         mydbg(__FILE__"calling BoxsetATC with DeviceData.porta = 0x%x and DeviceData.portb = 0x%x\n", DeviceData.porta, DeviceData.portb);
+         status = BoxSetATC(serial, ATC_Mode);
+         if (status < 0)
+         {
+             mydbg(__FILE__"BoxSetATC failed\n");
+             return status;
+         }
+     }
+     else
+     {
+
+         mydbg(__FILE__"calling BoxsetATC with DeviceData.porta = 0x%x and DeviceData.portb = 0x%x\n", DeviceData.porta, DeviceData.portb);
+         status = BoxSetATC(serial, ATC_DISABLED);
+         if (status < 0)
+         {
+             mydbg(__FILE__"BoxSetATC failed\n");
+             return status;
+         }
+     }
+
+
+     return 0;
+
+ }
+
+
+static int EmulateReadQMCR_Reg(int index, unsigned *uc_value)
+{
+     struct usb_serial *serial;
+     int status;
+     struct qt_get_device_data DeviceData;
+     __u8 uc_temp;
+
+     *uc_value = 0;
+
+     serial = find_the_box(index);
+     if(!(serial))
+         return -ENOTTY;
+
+     status = box_get_device(serial, &DeviceData);
+     if (status < 0)
+     {
+         mydbg(__FILE__"box_get_device failed\n");
+         return status;
+     }
+     uc_temp = DeviceData.porta & DUPMODE_BITS;
+     switch (uc_temp)
+     {
+        case FULL_DUPLEX:
+            *uc_value |= QMCR_FULL_DUPLEX;
+            break;
+          case HALF_DUPLEX_RTS:
+            *uc_value |= QMCR_HALF_DUPLEX_RTS;
+            break;
+          case HALF_DUPLEX_DTR:
+              *uc_value |= QMCR_HALF_DUPLEX_DTR;
+            break;
+     default:
+            break;
+     }
+
+     uc_temp = DeviceData.portb & LOOPMODE_BITS; //I use this for ATC control se
+
+     switch (uc_temp)
+     {
+     case ALL_LOOPBACK:
+         *uc_value |= QMCR_ALL_LOOPBACK;
+         break;
+     case MODEM_CTRL:
+         *uc_value |= QMCR_MODEM_CONTROL;
+         break;
+     default:
+         break;
+
+     }
+     return 0;
+
+
+ }
+
+static int __init serqt_usb_init(void)
+{
+	int i, result;
+	int status = 0;
+
+	mydbg("%s\n", __FUNCTION__);
+	tty_set_operations(&serial_tty_driver, &serial_ops);
+	result = tty_register_driver(&serial_tty_driver);
+	if (result) {
+		mydbg("tty_register_driver failed error = 0x%x", result);
+		return result;
+	}
+
+	/* Initalize our global data */
+	for (i = 0; i < SERIAL_TTY_MINORS; ++i)
+		serial_table[i] = NULL;
+
+	/* register this driver with the USB subsystem */
+	result = usb_register(&serqt_usb_driver);
+	if (result < 0) {
+		err("usb_register failed for the "__FILE__" driver. Error number %d", result);
+		return result;
+	}
+	status = 0; // Dynamic assignment of major number
+	major_number = register_chrdev(status, "SerialQT_USB", &serialqt_usb_fops);
+	if (major_number < 0) {
+		mydbg(KERN_DEBUG"No devices found \n\n");
+		return -EBUSY;
+	} else
+		mydbg(KERN_DEBUG"SerQT_USB major number assignment = %d \n\n", major_number);
+
+	printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION);
+	return 0;
+}
+
+static void __exit serqt_usb_exit(void)
+{
+    /* deregister this driver with the USB subsystem */
+    usb_deregister(&serqt_usb_driver);
+    tty_unregister_driver(&serial_tty_driver);
+    unregister_chrdev(major_number, "SerialQT_USB");
+}
+
+module_init(serqt_usb_init);
+module_exit(serqt_usb_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");