dirty fix to merging

1 files changed, 676 insertions, 0 deletions

diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c
new file mode 100644
index 00000000..f06c9a8f
--- /dev/null
+++ b/drivers/usb/serial/spcp8x5.c
@@ -0,0 +1,676 @@
+/*
+ * spcp8x5 USB to serial adaptor driver
+ *
+ * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com)
+ * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
+ * Copyright (C) 2006 S1 Corp.
+ *
+ * Original driver for 2.6.10 pl2303 driver by
+ *   Greg Kroah-Hartman (greg@kroah.com)
+ * Changes for 2.6.20 by Harald Klein <hari@vt100.at>
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+
+/* Version Information */
+#define DRIVER_VERSION	"v0.10"
+#define DRIVER_DESC 	"SPCP8x5 USB to serial adaptor driver"
+
+static bool debug;
+
+#define SPCP8x5_007_VID		0x04FC
+#define SPCP8x5_007_PID		0x0201
+#define SPCP8x5_008_VID		0x04fc
+#define SPCP8x5_008_PID		0x0235
+#define SPCP8x5_PHILIPS_VID	0x0471
+#define SPCP8x5_PHILIPS_PID	0x081e
+#define SPCP8x5_INTERMATIC_VID	0x04FC
+#define SPCP8x5_INTERMATIC_PID	0x0204
+#define SPCP8x5_835_VID		0x04fc
+#define SPCP8x5_835_PID		0x0231
+
+static const struct usb_device_id id_table[] = {
+	{ USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
+	{ USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
+	{ USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
+	{ USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
+	{ USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID)},
+	{ }					/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+struct spcp8x5_usb_ctrl_arg {
+	u8 	type;
+	u8	cmd;
+	u8	cmd_type;
+	u16	value;
+	u16	index;
+	u16	length;
+};
+
+
+/* spcp8x5 spec register define */
+#define MCR_CONTROL_LINE_RTS		0x02
+#define MCR_CONTROL_LINE_DTR		0x01
+#define MCR_DTR				0x01
+#define MCR_RTS				0x02
+
+#define MSR_STATUS_LINE_DCD		0x80
+#define MSR_STATUS_LINE_RI		0x40
+#define MSR_STATUS_LINE_DSR		0x20
+#define MSR_STATUS_LINE_CTS		0x10
+
+/* verdor command here , we should define myself */
+#define SET_DEFAULT			0x40
+#define SET_DEFAULT_TYPE		0x20
+
+#define SET_UART_FORMAT			0x40
+#define SET_UART_FORMAT_TYPE		0x21
+#define SET_UART_FORMAT_SIZE_5		0x00
+#define SET_UART_FORMAT_SIZE_6		0x01
+#define SET_UART_FORMAT_SIZE_7		0x02
+#define SET_UART_FORMAT_SIZE_8		0x03
+#define SET_UART_FORMAT_STOP_1		0x00
+#define SET_UART_FORMAT_STOP_2		0x04
+#define SET_UART_FORMAT_PAR_NONE	0x00
+#define SET_UART_FORMAT_PAR_ODD		0x10
+#define SET_UART_FORMAT_PAR_EVEN	0x30
+#define SET_UART_FORMAT_PAR_MASK	0xD0
+#define SET_UART_FORMAT_PAR_SPACE	0x90
+
+#define GET_UART_STATUS_TYPE		0xc0
+#define GET_UART_STATUS			0x22
+#define GET_UART_STATUS_MSR		0x06
+
+#define SET_UART_STATUS			0x40
+#define SET_UART_STATUS_TYPE		0x23
+#define SET_UART_STATUS_MCR		0x0004
+#define SET_UART_STATUS_MCR_DTR		0x01
+#define SET_UART_STATUS_MCR_RTS		0x02
+#define SET_UART_STATUS_MCR_LOOP	0x10
+
+#define SET_WORKING_MODE		0x40
+#define SET_WORKING_MODE_TYPE		0x24
+#define SET_WORKING_MODE_U2C		0x00
+#define SET_WORKING_MODE_RS485		0x01
+#define SET_WORKING_MODE_PDMA		0x02
+#define SET_WORKING_MODE_SPP		0x03
+
+#define SET_FLOWCTL_CHAR		0x40
+#define SET_FLOWCTL_CHAR_TYPE		0x25
+
+#define GET_VERSION			0xc0
+#define GET_VERSION_TYPE		0x26
+
+#define SET_REGISTER			0x40
+#define SET_REGISTER_TYPE		0x27
+
+#define	GET_REGISTER			0xc0
+#define GET_REGISTER_TYPE		0x28
+
+#define SET_RAM				0x40
+#define SET_RAM_TYPE			0x31
+
+#define GET_RAM				0xc0
+#define GET_RAM_TYPE			0x32
+
+/* how come ??? */
+#define UART_STATE			0x08
+#define UART_STATE_TRANSIENT_MASK	0x75
+#define UART_DCD			0x01
+#define UART_DSR			0x02
+#define UART_BREAK_ERROR		0x04
+#define UART_RING			0x08
+#define UART_FRAME_ERROR		0x10
+#define UART_PARITY_ERROR		0x20
+#define UART_OVERRUN_ERROR		0x40
+#define UART_CTS			0x80
+
+enum spcp8x5_type {
+	SPCP825_007_TYPE,
+	SPCP825_008_TYPE,
+	SPCP825_PHILIP_TYPE,
+	SPCP825_INTERMATIC_TYPE,
+	SPCP835_TYPE,
+};
+
+static struct usb_driver spcp8x5_driver = {
+	.name =			"spcp8x5",
+	.probe =		usb_serial_probe,
+	.disconnect =		usb_serial_disconnect,
+	.id_table =		id_table,
+};
+
+
+struct spcp8x5_private {
+	spinlock_t 	lock;
+	enum spcp8x5_type	type;
+	wait_queue_head_t	delta_msr_wait;
+	u8 			line_control;
+	u8 			line_status;
+};
+
+/* desc : when device plug in,this function would be called.
+ * thanks to usb_serial subsystem,then do almost every things for us. And what
+ * we should do just alloc the buffer */
+static int spcp8x5_startup(struct usb_serial *serial)
+{
+	struct spcp8x5_private *priv;
+	int i;
+	enum spcp8x5_type type = SPCP825_007_TYPE;
+	u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
+
+	if (product == 0x0201)
+		type = SPCP825_007_TYPE;
+	else if (product == 0x0231)
+		type = SPCP835_TYPE;
+	else if (product == 0x0235)
+		type = SPCP825_008_TYPE;
+	else if (product == 0x0204)
+		type = SPCP825_INTERMATIC_TYPE;
+	else if (product == 0x0471 &&
+		 serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
+		type = SPCP825_PHILIP_TYPE;
+	dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
+
+	for (i = 0; i < serial->num_ports; ++i) {
+		priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL);
+		if (!priv)
+			goto cleanup;
+
+		spin_lock_init(&priv->lock);
+		init_waitqueue_head(&priv->delta_msr_wait);
+		priv->type = type;
+		usb_set_serial_port_data(serial->port[i] , priv);
+	}
+
+	return 0;
+cleanup:
+	for (--i; i >= 0; --i) {
+		priv = usb_get_serial_port_data(serial->port[i]);
+		kfree(priv);
+		usb_set_serial_port_data(serial->port[i] , NULL);
+	}
+	return -ENOMEM;
+}
+
+/* call when the device plug out. free all the memory alloced by probe */
+static void spcp8x5_release(struct usb_serial *serial)
+{
+	int i;
+
+	for (i = 0; i < serial->num_ports; i++)
+		kfree(usb_get_serial_port_data(serial->port[i]));
+}
+
+/* set the modem control line of the device.
+ * NOTE spcp825-007 not supported this */
+static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
+				enum spcp8x5_type type)
+{
+	int retval;
+	u8 mcr = 0 ;
+
+	if (type == SPCP825_007_TYPE)
+		return -EPERM;
+
+	mcr = (unsigned short)value;
+	retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+				 SET_UART_STATUS_TYPE, SET_UART_STATUS,
+				 mcr, 0x04, NULL, 0, 100);
+	if (retval != 0)
+		dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
+	return retval;
+}
+
+/* get the modem status register of the device
+ * NOTE spcp825-007 not supported this */
+static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
+			   enum spcp8x5_type type)
+{
+	u8 *status_buffer;
+	int ret;
+
+	/* I return Permited not support here but seem inval device
+	 * is more fix */
+	if (type == SPCP825_007_TYPE)
+		return -EPERM;
+	if (status == NULL)
+		return -EINVAL;
+
+	status_buffer = kmalloc(1, GFP_KERNEL);
+	if (!status_buffer)
+		return -ENOMEM;
+	status_buffer[0] = status[0];
+
+	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+			      GET_UART_STATUS, GET_UART_STATUS_TYPE,
+			      0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
+	if (ret < 0)
+		dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
+			status_buffer, ret);
+
+	dev_dbg(&dev->dev, "0xc0:0x22:0:6  %d - 0x%p ", ret, status_buffer);
+	status[0] = status_buffer[0];
+	kfree(status_buffer);
+
+	return ret;
+}
+
+/* select the work mode.
+ * NOTE this function not supported by spcp825-007 */
+static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
+				 u16 index, enum spcp8x5_type type)
+{
+	int ret;
+
+	/* I return Permited not support here but seem inval device
+	 * is more fix */
+	if (type == SPCP825_007_TYPE)
+		return;
+
+	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+			      SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
+			      value, index, NULL, 0, 100);
+	dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
+	if (ret < 0)
+		dev_dbg(&dev->dev,
+			"RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
+}
+
+static int spcp8x5_carrier_raised(struct usb_serial_port *port)
+{
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	if (priv->line_status & MSR_STATUS_LINE_DCD)
+		return 1;
+	return 0;
+}
+
+static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
+{
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	u8 control;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (on)
+		priv->line_control = MCR_CONTROL_LINE_DTR
+						| MCR_CONTROL_LINE_RTS;
+	else
+		priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
+						| MCR_CONTROL_LINE_RTS);
+	control = priv->line_control;
+	spin_unlock_irqrestore(&priv->lock, flags);
+	spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
+}
+
+static void spcp8x5_init_termios(struct tty_struct *tty)
+{
+	/* for the 1st time call this function */
+	*(tty->termios) = tty_std_termios;
+	tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
+	tty->termios->c_ispeed = 115200;
+	tty->termios->c_ospeed = 115200;
+}
+
+/* set the serial param for transfer. we should check if we really need to
+ * transfer. if we set flow control we should do this too. */
+static void spcp8x5_set_termios(struct tty_struct *tty,
+		struct usb_serial_port *port, struct ktermios *old_termios)
+{
+	struct usb_serial *serial = port->serial;
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	unsigned int cflag = tty->termios->c_cflag;
+	unsigned int old_cflag = old_termios->c_cflag;
+	unsigned short uartdata;
+	unsigned char buf[2] = {0, 0};
+	int baud;
+	int i;
+	u8 control;
+
+
+	/* check that they really want us to change something */
+	if (!tty_termios_hw_change(tty->termios, old_termios))
+		return;
+
+	/* set DTR/RTS active */
+	spin_lock_irqsave(&priv->lock, flags);
+	control = priv->line_control;
+	if ((old_cflag & CBAUD) == B0) {
+		priv->line_control |= MCR_DTR;
+		if (!(old_cflag & CRTSCTS))
+			priv->line_control |= MCR_RTS;
+	}
+	if (control != priv->line_control) {
+		control = priv->line_control;
+		spin_unlock_irqrestore(&priv->lock, flags);
+		spcp8x5_set_ctrlLine(serial->dev, control , priv->type);
+	} else {
+		spin_unlock_irqrestore(&priv->lock, flags);
+	}
+
+	/* Set Baud Rate */
+	baud = tty_get_baud_rate(tty);
+	switch (baud) {
+	case 300:	buf[0] = 0x00;	break;
+	case 600:	buf[0] = 0x01;	break;
+	case 1200:	buf[0] = 0x02;	break;
+	case 2400:	buf[0] = 0x03;	break;
+	case 4800:	buf[0] = 0x04;	break;
+	case 9600:	buf[0] = 0x05;	break;
+	case 19200:	buf[0] = 0x07;	break;
+	case 38400:	buf[0] = 0x09;	break;
+	case 57600:	buf[0] = 0x0a;	break;
+	case 115200:	buf[0] = 0x0b;	break;
+	case 230400:	buf[0] = 0x0c;	break;
+	case 460800:	buf[0] = 0x0d;	break;
+	case 921600:	buf[0] = 0x0e;	break;
+/*	case 1200000:	buf[0] = 0x0f;	break; */
+/*	case 2400000:	buf[0] = 0x10;	break; */
+	case 3000000:	buf[0] = 0x11;	break;
+/*	case 6000000:	buf[0] = 0x12;	break; */
+	case 0:
+	case 1000000:
+			buf[0] = 0x0b;	break;
+	default:
+		dev_err(&port->dev, "spcp825 driver does not support the "
+			"baudrate requested, using default of 9600.\n");
+	}
+
+	/* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
+	if (cflag & CSIZE) {
+		switch (cflag & CSIZE) {
+		case CS5:
+			buf[1] |= SET_UART_FORMAT_SIZE_5;
+			break;
+		case CS6:
+			buf[1] |= SET_UART_FORMAT_SIZE_6;
+			break;
+		case CS7:
+			buf[1] |= SET_UART_FORMAT_SIZE_7;
+			break;
+		default:
+		case CS8:
+			buf[1] |= SET_UART_FORMAT_SIZE_8;
+			break;
+		}
+	}
+
+	/* Set Stop bit2 : 0:1bit 1:2bit */
+	buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
+				     SET_UART_FORMAT_STOP_1;
+
+	/* Set Parity bit3-4 01:Odd 11:Even */
+	if (cflag & PARENB) {
+		buf[1] |= (cflag & PARODD) ?
+		SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
+	} else
+		buf[1] |= SET_UART_FORMAT_PAR_NONE;
+
+	uartdata = buf[0] | buf[1]<<8;
+
+	i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+			    SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
+			    uartdata, 0, NULL, 0, 100);
+	if (i < 0)
+		dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
+			uartdata, i);
+	dbg("0x21:0x40:0:0  %d", i);
+
+	if (cflag & CRTSCTS) {
+		/* enable hardware flow control */
+		spcp8x5_set_workMode(serial->dev, 0x000a,
+				     SET_WORKING_MODE_U2C, priv->type);
+	}
+}
+
+/* open the serial port. do some usb system call. set termios and get the line
+ * status of the device. */
+static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+	struct ktermios tmp_termios;
+	struct usb_serial *serial = port->serial;
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	int ret;
+	unsigned long flags;
+	u8 status = 0x30;
+	/* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
+
+	dbg("%s -  port %d", __func__, port->number);
+
+	usb_clear_halt(serial->dev, port->write_urb->pipe);
+	usb_clear_halt(serial->dev, port->read_urb->pipe);
+
+	ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+			      0x09, 0x00,
+			      0x01, 0x00, NULL, 0x00, 100);
+	if (ret)
+		return ret;
+
+	spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
+
+	/* Setup termios */
+	if (tty)
+		spcp8x5_set_termios(tty, port, &tmp_termios);
+
+	spcp8x5_get_msr(serial->dev, &status, priv->type);
+
+	/* may be we should update uart status here but now we did not do */
+	spin_lock_irqsave(&priv->lock, flags);
+	priv->line_status = status & 0xf0 ;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	port->port.drain_delay = 256;
+
+	return usb_serial_generic_open(tty, port);
+}
+
+static void spcp8x5_process_read_urb(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	struct tty_struct *tty;
+	unsigned char *data = urb->transfer_buffer;
+	unsigned long flags;
+	u8 status;
+	char tty_flag;
+
+	/* get tty_flag from status */
+	tty_flag = TTY_NORMAL;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	status = priv->line_status;
+	priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
+	spin_unlock_irqrestore(&priv->lock, flags);
+	/* wake up the wait for termios */
+	wake_up_interruptible(&priv->delta_msr_wait);
+
+	if (!urb->actual_length)
+		return;
+
+	tty = tty_port_tty_get(&port->port);
+	if (!tty)
+		return;
+
+	if (status & UART_STATE_TRANSIENT_MASK) {
+		/* break takes precedence over parity, which takes precedence
+		 * over framing errors */
+		if (status & UART_BREAK_ERROR)
+			tty_flag = TTY_BREAK;
+		else if (status & UART_PARITY_ERROR)
+			tty_flag = TTY_PARITY;
+		else if (status & UART_FRAME_ERROR)
+			tty_flag = TTY_FRAME;
+		dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
+
+		/* overrun is special, not associated with a char */
+		if (status & UART_OVERRUN_ERROR)
+			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+
+		if (status & UART_DCD)
+			usb_serial_handle_dcd_change(port, tty,
+				   priv->line_status & MSR_STATUS_LINE_DCD);
+	}
+
+	tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
+							urb->actual_length);
+	tty_flip_buffer_push(tty);
+	tty_kref_put(tty);
+}
+
+static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
+				   unsigned int arg)
+{
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	unsigned int prevstatus;
+	unsigned int status;
+	unsigned int changed;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	prevstatus = priv->line_status;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	while (1) {
+		/* wake up in bulk read */
+		interruptible_sleep_on(&priv->delta_msr_wait);
+
+		/* see if a signal did it */
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+
+		spin_lock_irqsave(&priv->lock, flags);
+		status = priv->line_status;
+		spin_unlock_irqrestore(&priv->lock, flags);
+
+		changed = prevstatus^status;
+
+		if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
+		    ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
+		    ((arg & TIOCM_CD)  && (changed & MSR_STATUS_LINE_DCD)) ||
+		    ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
+			return 0;
+
+		prevstatus = status;
+	}
+	/* NOTREACHED */
+	return 0;
+}
+
+static int spcp8x5_ioctl(struct tty_struct *tty,
+			 unsigned int cmd, unsigned long arg)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
+
+	switch (cmd) {
+	case TIOCMIWAIT:
+		dbg("%s (%d) TIOCMIWAIT", __func__,  port->number);
+		return spcp8x5_wait_modem_info(port, arg);
+
+	default:
+		dbg("%s not supported = 0x%04x", __func__, cmd);
+		break;
+	}
+
+	return -ENOIOCTLCMD;
+}
+
+static int spcp8x5_tiocmset(struct tty_struct *tty,
+			    unsigned int set, unsigned int clear)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	u8 control;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (set & TIOCM_RTS)
+		priv->line_control |= MCR_RTS;
+	if (set & TIOCM_DTR)
+		priv->line_control |= MCR_DTR;
+	if (clear & TIOCM_RTS)
+		priv->line_control &= ~MCR_RTS;
+	if (clear & TIOCM_DTR)
+		priv->line_control &= ~MCR_DTR;
+	control = priv->line_control;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
+}
+
+static int spcp8x5_tiocmget(struct tty_struct *tty)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	unsigned int mcr;
+	unsigned int status;
+	unsigned int result;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	mcr = priv->line_control;
+	status = priv->line_status;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	result = ((mcr & MCR_DTR)			? TIOCM_DTR : 0)
+		  | ((mcr & MCR_RTS)			? TIOCM_RTS : 0)
+		  | ((status & MSR_STATUS_LINE_CTS)	? TIOCM_CTS : 0)
+		  | ((status & MSR_STATUS_LINE_DSR)	? TIOCM_DSR : 0)
+		  | ((status & MSR_STATUS_LINE_RI)	? TIOCM_RI  : 0)
+		  | ((status & MSR_STATUS_LINE_DCD)	? TIOCM_CD  : 0);
+
+	return result;
+}
+
+/* All of the device info needed for the spcp8x5 SIO serial converter */
+static struct usb_serial_driver spcp8x5_device = {
+	.driver = {
+		.owner =	THIS_MODULE,
+		.name =		"SPCP8x5",
+	},
+	.id_table		= id_table,
+	.num_ports		= 1,
+	.open 			= spcp8x5_open,
+	.dtr_rts		= spcp8x5_dtr_rts,
+	.carrier_raised		= spcp8x5_carrier_raised,
+	.set_termios 		= spcp8x5_set_termios,
+	.init_termios		= spcp8x5_init_termios,
+	.ioctl 			= spcp8x5_ioctl,
+	.tiocmget 		= spcp8x5_tiocmget,
+	.tiocmset 		= spcp8x5_tiocmset,
+	.attach 		= spcp8x5_startup,
+	.release 		= spcp8x5_release,
+	.process_read_urb	= spcp8x5_process_read_urb,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+	&spcp8x5_device, NULL
+};
+
+module_usb_serial_driver(spcp8x5_driver, serial_drivers);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");