[linux-2.6-block.git] / drivers / usb / serial / ssu100.c

/*
 * usb-serial driver for Quatech SSU-100
 *
 * based on ftdi_sio.c and the original serqt_usb.c from Quatech
 *
 */

#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/serial.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/serial_reg.h>
#include <linux/uaccess.h>

#define QT_OPEN_CLOSE_CHANNEL       0xca
#define QT_SET_GET_DEVICE           0xc2
#define QT_SET_GET_REGISTER         0xc0
#define QT_GET_SET_PREBUF_TRIG_LVL  0xcc
#define QT_SET_ATF                  0xcd
#define QT_GET_SET_UART             0xc1
#define QT_TRANSFER_IN              0xc0
#define QT_HW_FLOW_CONTROL_MASK     0xc5
#define QT_SW_FLOW_CONTROL_MASK     0xc6

#define  SERIAL_MSR_MASK            0xf0

#define  SERIAL_CRTSCTS ((UART_MCR_RTS << 8) | UART_MSR_CTS)

#define  SERIAL_EVEN_PARITY         (UART_LCR_PARITY | UART_LCR_EPAR)

#define  MAX_BAUD_RATE              460800

#define ATC_DISABLED                0x00
#define DUPMODE_BITS        0xc0
#define RR_BITS             0x03
#define LOOPMODE_BITS       0x41
#define RS232_MODE          0x00
#define RTSCTS_TO_CONNECTOR 0x40
#define CLKS_X4             0x02
#define FULLPWRBIT          0x00000080
#define NEXT_BOARD_POWER_BIT        0x00000004

#define DRIVER_DESC "Quatech SSU-100 USB to Serial Driver"

#define	USB_VENDOR_ID_QUATECH	0x061d	/* Quatech VID */
#define QUATECH_SSU100	0xC020	/* SSU100 */

static const struct usb_device_id id_table[] = {
	{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)},
	{}			/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);

struct ssu100_port_private {
	spinlock_t status_lock;
	u8 shadowLSR;
	u8 shadowMSR;
	wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
	struct async_icount icount;
};

static inline int ssu100_control_msg(struct usb_device *dev,
				     u8 request, u16 data, u16 index)
{
	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			       request, 0x40, data, index,
			       NULL, 0, 300);
}

static inline int ssu100_setdevice(struct usb_device *dev, u8 *data)
{
	u16 x = ((u16)(data[1] << 8) | (u16)(data[0]));

	return ssu100_control_msg(dev, QT_SET_GET_DEVICE, x, 0);
}


static inline int ssu100_getdevice(struct usb_device *dev, u8 *data)
{
	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
			       QT_SET_GET_DEVICE, 0xc0, 0, 0,
			       data, 3, 300);
}

static inline int ssu100_getregister(struct usb_device *dev,
				     unsigned short uart,
				     unsigned short reg,
				     u8 *data)
{
	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
			       QT_SET_GET_REGISTER, 0xc0, reg,
			       uart, data, sizeof(*data), 300);

}


static inline int ssu100_setregister(struct usb_device *dev,
				     unsigned short uart,
				     unsigned short reg,
				     u16 data)
{
	u16 value = (data << 8) | reg;

	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			       QT_SET_GET_REGISTER, 0x40, value, uart,
			       NULL, 0, 300);

}

#define set_mctrl(dev, set)		update_mctrl((dev), (set), 0)
#define clear_mctrl(dev, clear)	update_mctrl((dev), 0, (clear))

/* these do not deal with device that have more than 1 port */
static inline int update_mctrl(struct usb_device *dev, unsigned int set,
			       unsigned int clear)
{
	unsigned urb_value;
	int result;

	if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
		dev_dbg(&dev->dev, "%s - DTR|RTS not being set|cleared\n", __func__);
		return 0;	/* no change */
	}

	clear &= ~set;	/* 'set' takes precedence over 'clear' */
	urb_value = 0;
	if (set & TIOCM_DTR)
		urb_value |= UART_MCR_DTR;
	if (set & TIOCM_RTS)
		urb_value |= UART_MCR_RTS;

	result = ssu100_setregister(dev, 0, UART_MCR, urb_value);
	if (result < 0)
		dev_dbg(&dev->dev, "%s Error from MODEM_CTRL urb\n", __func__);

	return result;
}

static int ssu100_initdevice(struct usb_device *dev)
{
	u8 *data;
	int result = 0;

	data = kzalloc(3, GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	result = ssu100_getdevice(dev, data);
	if (result < 0) {
		dev_dbg(&dev->dev, "%s - get_device failed %i\n", __func__, result);
		goto out;
	}

	data[1] &= ~FULLPWRBIT;

	result = ssu100_setdevice(dev, data);
	if (result < 0) {
		dev_dbg(&dev->dev, "%s - setdevice failed %i\n", __func__, result);
		goto out;
	}

	result = ssu100_control_msg(dev, QT_GET_SET_PREBUF_TRIG_LVL, 128, 0);
	if (result < 0) {
		dev_dbg(&dev->dev, "%s - set prebuffer level failed %i\n", __func__, result);
		goto out;
	}

	result = ssu100_control_msg(dev, QT_SET_ATF, ATC_DISABLED, 0);
	if (result < 0) {
		dev_dbg(&dev->dev, "%s - set ATFprebuffer level failed %i\n", __func__, result);
		goto out;
	}

	result = ssu100_getdevice(dev, data);
	if (result < 0) {
		dev_dbg(&dev->dev, "%s - get_device failed %i\n", __func__, result);
		goto out;
	}

	data[0] &= ~(RR_BITS | DUPMODE_BITS);
	data[0] |= CLKS_X4;
	data[1] &= ~(LOOPMODE_BITS);
	data[1] |= RS232_MODE;

	result = ssu100_setdevice(dev, data);
	if (result < 0) {
		dev_dbg(&dev->dev, "%s - setdevice failed %i\n", __func__, result);
		goto out;
	}

out:	kfree(data);
	return result;

}


static void ssu100_set_termios(struct tty_struct *tty,
			       struct usb_serial_port *port,
			       struct ktermios *old_termios)
{
	struct usb_device *dev = port->serial->dev;
	struct ktermios *termios = &tty->termios;
	u16 baud, divisor, remainder;
	unsigned int cflag = termios->c_cflag;
	u16 urb_value = 0; /* will hold the new flags */
	int result;

	if (cflag & PARENB) {
		if (cflag & PARODD)
			urb_value |= UART_LCR_PARITY;
		else
			urb_value |= SERIAL_EVEN_PARITY;
	}

	switch (cflag & CSIZE) {
	case CS5:
		urb_value |= UART_LCR_WLEN5;
		break;
	case CS6:
		urb_value |= UART_LCR_WLEN6;
		break;
	case CS7:
		urb_value |= UART_LCR_WLEN7;
		break;
	default:
	case CS8:
		urb_value |= UART_LCR_WLEN8;
		break;
	}

	baud = tty_get_baud_rate(tty);
	if (!baud)
		baud = 9600;

	dev_dbg(&port->dev, "%s - got baud = %d\n", __func__, baud);


	divisor = MAX_BAUD_RATE / baud;
	remainder = MAX_BAUD_RATE % baud;
	if (((remainder * 2) >= baud) && (baud != 110))
		divisor++;

	urb_value = urb_value << 8;

	result = ssu100_control_msg(dev, QT_GET_SET_UART, divisor, urb_value);
	if (result < 0)
		dev_dbg(&port->dev, "%s - set uart failed\n", __func__);

	if (cflag & CRTSCTS)
		result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
					    SERIAL_CRTSCTS, 0);
	else
		result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
					    0, 0);
	if (result < 0)
		dev_dbg(&port->dev, "%s - set HW flow control failed\n", __func__);

	if (I_IXOFF(tty) || I_IXON(tty)) {
		u16 x = ((u16)(START_CHAR(tty) << 8) | (u16)(STOP_CHAR(tty)));

		result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
					    x, 0);
	} else
		result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
					    0, 0);

	if (result < 0)
		dev_dbg(&port->dev, "%s - set SW flow control failed\n", __func__);

}


static int ssu100_open(struct tty_struct *tty, struct usb_serial_port *port)
{
	struct usb_device *dev = port->serial->dev;
	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	u8 *data;
	int result;
	unsigned long flags;

	data = kzalloc(2, GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
				 QT_OPEN_CLOSE_CHANNEL,
				 QT_TRANSFER_IN, 0x01,
				 0, data, 2, 300);
	if (result < 0) {
		dev_dbg(&port->dev, "%s - open failed %i\n", __func__, result);
		kfree(data);
		return result;
	}

	spin_lock_irqsave(&priv->status_lock, flags);
	priv->shadowLSR = data[0];
	priv->shadowMSR = data[1];
	spin_unlock_irqrestore(&priv->status_lock, flags);

	kfree(data);

/* set to 9600 */
	result = ssu100_control_msg(dev, QT_GET_SET_UART, 0x30, 0x0300);
	if (result < 0)
		dev_dbg(&port->dev, "%s - set uart failed\n", __func__);

	if (tty)
		ssu100_set_termios(tty, port, &tty->termios);

	return usb_serial_generic_open(tty, port);
}

static void ssu100_close(struct usb_serial_port *port)
{
	usb_serial_generic_close(port);
}

static int get_serial_info(struct usb_serial_port *port,
			   struct serial_struct __user *retinfo)
{
	struct serial_struct tmp;

	if (!retinfo)
		return -EFAULT;

	memset(&tmp, 0, sizeof(tmp));
	tmp.line		= port->serial->minor;
	tmp.port		= 0;
	tmp.irq			= 0;
	tmp.flags		= ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
	tmp.xmit_fifo_size	= port->bulk_out_size;
	tmp.baud_base		= 9600;
	tmp.close_delay		= 5*HZ;
	tmp.closing_wait	= 30*HZ;

	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
		return -EFAULT;
	return 0;
}

static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
{
	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	struct async_icount prev, cur;
	unsigned long flags;

	spin_lock_irqsave(&priv->status_lock, flags);
	prev = priv->icount;
	spin_unlock_irqrestore(&priv->status_lock, flags);

	while (1) {
		wait_event_interruptible(priv->delta_msr_wait,
					 ((priv->icount.rng != prev.rng) ||
					  (priv->icount.dsr != prev.dsr) ||
					  (priv->icount.dcd != prev.dcd) ||
					  (priv->icount.cts != prev.cts)));

		if (signal_pending(current))
			return -ERESTARTSYS;

		spin_lock_irqsave(&priv->status_lock, flags);
		cur = priv->icount;
		spin_unlock_irqrestore(&priv->status_lock, flags);

		if ((prev.rng == cur.rng) &&
		    (prev.dsr == cur.dsr) &&
		    (prev.dcd == cur.dcd) &&
		    (prev.cts == cur.cts))
			return -EIO;

		if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) ||
		    (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) ||
		    (arg & TIOCM_CD  && (prev.dcd != cur.dcd)) ||
		    (arg & TIOCM_CTS && (prev.cts != cur.cts)))
			return 0;
	}
	return 0;
}

static int ssu100_get_icount(struct tty_struct *tty,
			struct serial_icounter_struct *icount)
{
	struct usb_serial_port *port = tty->driver_data;
	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	struct async_icount cnow = priv->icount;

	icount->cts = cnow.cts;
	icount->dsr = cnow.dsr;
	icount->rng = cnow.rng;
	icount->dcd = cnow.dcd;
	icount->rx = cnow.rx;
	icount->tx = cnow.tx;
	icount->frame = cnow.frame;
	icount->overrun = cnow.overrun;
	icount->parity = cnow.parity;
	icount->brk = cnow.brk;
	icount->buf_overrun = cnow.buf_overrun;

	return 0;
}


static int ssu100_ioctl(struct tty_struct *tty,
		    unsigned int cmd, unsigned long arg)
{
	struct usb_serial_port *port = tty->driver_data;

	dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd);

	switch (cmd) {
	case TIOCGSERIAL:
		return get_serial_info(port,
				       (struct serial_struct __user *) arg);

	case TIOCMIWAIT:
		return wait_modem_info(port, arg);

	default:
		break;
	}

	dev_dbg(&port->dev, "%s arg not supported\n", __func__);

	return -ENOIOCTLCMD;
}

static int ssu100_attach(struct usb_serial *serial)
{
	return ssu100_initdevice(serial->dev);
}

static int ssu100_port_probe(struct usb_serial_port *port)
{
	struct ssu100_port_private *priv;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	spin_lock_init(&priv->status_lock);
	init_waitqueue_head(&priv->delta_msr_wait);

	usb_set_serial_port_data(port, priv);

	return 0;
}

static int ssu100_port_remove(struct usb_serial_port *port)
{
	struct ssu100_port_private *priv;

	priv = usb_get_serial_port_data(port);
	kfree(priv);

	return 0;
}

static int ssu100_tiocmget(struct tty_struct *tty)
{
	struct usb_serial_port *port = tty->driver_data;
	struct usb_device *dev = port->serial->dev;
	u8 *d;
	int r;

	d = kzalloc(2, GFP_KERNEL);
	if (!d)
		return -ENOMEM;

	r = ssu100_getregister(dev, 0, UART_MCR, d);
	if (r < 0)
		goto mget_out;

	r = ssu100_getregister(dev, 0, UART_MSR, d+1);
	if (r < 0)
		goto mget_out;

	r = (d[0] & UART_MCR_DTR ? TIOCM_DTR : 0) |
		(d[0] & UART_MCR_RTS ? TIOCM_RTS : 0) |
		(d[1] & UART_MSR_CTS ? TIOCM_CTS : 0) |
		(d[1] & UART_MSR_DCD ? TIOCM_CAR : 0) |
		(d[1] & UART_MSR_RI ? TIOCM_RI : 0) |
		(d[1] & UART_MSR_DSR ? TIOCM_DSR : 0);

mget_out:
	kfree(d);
	return r;
}

static int ssu100_tiocmset(struct tty_struct *tty,
			   unsigned int set, unsigned int clear)
{
	struct usb_serial_port *port = tty->driver_data;
	struct usb_device *dev = port->serial->dev;

	return update_mctrl(dev, set, clear);
}

static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
{
	struct usb_device *dev = port->serial->dev;

	mutex_lock(&port->serial->disc_mutex);
	if (!port->serial->disconnected) {
		/* Disable flow control */
		if (!on &&
		    ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
			dev_err(&port->dev, "error from flowcontrol urb\n");
		/* drop RTS and DTR */
		if (on)
			set_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
		else
			clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
	}
	mutex_unlock(&port->serial->disc_mutex);
}

static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
{
	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;

	spin_lock_irqsave(&priv->status_lock, flags);
	priv->shadowMSR = msr;
	spin_unlock_irqrestore(&priv->status_lock, flags);

	if (msr & UART_MSR_ANY_DELTA) {
		/* update input line counters */
		if (msr & UART_MSR_DCTS)
			priv->icount.cts++;
		if (msr & UART_MSR_DDSR)
			priv->icount.dsr++;
		if (msr & UART_MSR_DDCD)
			priv->icount.dcd++;
		if (msr & UART_MSR_TERI)
			priv->icount.rng++;
		wake_up_interruptible(&priv->delta_msr_wait);
	}
}

static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
			      char *tty_flag)
{
	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;

	spin_lock_irqsave(&priv->status_lock, flags);
	priv->shadowLSR = lsr;
	spin_unlock_irqrestore(&priv->status_lock, flags);

	*tty_flag = TTY_NORMAL;
	if (lsr & UART_LSR_BRK_ERROR_BITS) {
		/* we always want to update icount, but we only want to
		 * update tty_flag for one case */
		if (lsr & UART_LSR_BI) {
			priv->icount.brk++;
			*tty_flag = TTY_BREAK;
			usb_serial_handle_break(port);
		}
		if (lsr & UART_LSR_PE) {
			priv->icount.parity++;
			if (*tty_flag == TTY_NORMAL)
				*tty_flag = TTY_PARITY;
		}
		if (lsr & UART_LSR_FE) {
			priv->icount.frame++;
			if (*tty_flag == TTY_NORMAL)
				*tty_flag = TTY_FRAME;
		}
		if (lsr & UART_LSR_OE){
			priv->icount.overrun++;
			if (*tty_flag == TTY_NORMAL)
				*tty_flag = TTY_OVERRUN;
		}
	}

}

static int ssu100_process_packet(struct urb *urb,
				 struct tty_struct *tty)
{
	struct usb_serial_port *port = urb->context;
	char *packet = (char *)urb->transfer_buffer;
	char flag = TTY_NORMAL;
	u32 len = urb->actual_length;
	int i;
	char *ch;

	if ((len >= 4) &&
	    (packet[0] == 0x1b) && (packet[1] == 0x1b) &&
	    ((packet[2] == 0x00) || (packet[2] == 0x01))) {
		if (packet[2] == 0x00) {
			ssu100_update_lsr(port, packet[3], &flag);
			if (flag == TTY_OVERRUN)
				tty_insert_flip_char(tty, 0, TTY_OVERRUN);
		}
		if (packet[2] == 0x01)
			ssu100_update_msr(port, packet[3]);

		len -= 4;
		ch = packet + 4;
	} else
		ch = packet;

	if (!len)
		return 0;	/* status only */

	if (port->port.console && port->sysrq) {
		for (i = 0; i < len; i++, ch++) {
			if (!usb_serial_handle_sysrq_char(port, *ch))
				tty_insert_flip_char(tty, *ch, flag);
		}
	} else
		tty_insert_flip_string_fixed_flag(&port->port, ch, flag, len);

	return len;
}

static void ssu100_process_read_urb(struct urb *urb)
{
	struct usb_serial_port *port = urb->context;
	struct tty_struct *tty;
	int count;

	tty = tty_port_tty_get(&port->port);
	if (!tty)
		return;

	count = ssu100_process_packet(urb, tty);

	if (count)
		tty_flip_buffer_push(tty);
	tty_kref_put(tty);
}

static struct usb_serial_driver ssu100_device = {
	.driver = {
		.owner = THIS_MODULE,
		.name = "ssu100",
	},
	.description	     = DRIVER_DESC,
	.id_table	     = id_table,
	.num_ports	     = 1,
	.open		     = ssu100_open,
	.close		     = ssu100_close,
	.attach              = ssu100_attach,
	.port_probe          = ssu100_port_probe,
	.port_remove         = ssu100_port_remove,
	.dtr_rts             = ssu100_dtr_rts,
	.process_read_urb    = ssu100_process_read_urb,
	.tiocmget            = ssu100_tiocmget,
	.tiocmset            = ssu100_tiocmset,
	.get_icount	     = ssu100_get_icount,
	.ioctl               = ssu100_ioctl,
	.set_termios         = ssu100_set_termios,
	.disconnect          = usb_serial_generic_disconnect,
};

static struct usb_serial_driver * const serial_drivers[] = {
	&ssu100_device, NULL
};

module_usb_serial_driver(serial_drivers, id_table);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
Commit	Line	Data
52af9545 BP	1	/*
	2	* usb-serial driver for Quatech SSU-100
	3	*
	4	* based on ftdi_sio.c and the original serqt_usb.c from Quatech
	5	*
	6	*/
	7
	8	#include <linux/errno.h>
	9	#include <linux/init.h>
	10	#include <linux/slab.h>
	11	#include <linux/tty.h>
	12	#include <linux/tty_driver.h>
	13	#include <linux/tty_flip.h>
	14	#include <linux/module.h>
	15	#include <linux/serial.h>
	16	#include <linux/usb.h>
	17	#include <linux/usb/serial.h>
79f203a2	18	#include <linux/serial_reg.h>
52af9545 BP	19	#include <linux/uaccess.h>
	20
	21	#define QT_OPEN_CLOSE_CHANNEL 0xca
	22	#define QT_SET_GET_DEVICE 0xc2
	23	#define QT_SET_GET_REGISTER 0xc0
	24	#define QT_GET_SET_PREBUF_TRIG_LVL 0xcc
	25	#define QT_SET_ATF 0xcd
	26	#define QT_GET_SET_UART 0xc1
	27	#define QT_TRANSFER_IN 0xc0
	28	#define QT_HW_FLOW_CONTROL_MASK 0xc5
	29	#define QT_SW_FLOW_CONTROL_MASK 0xc6
	30
52af9545 BP	31	#define SERIAL_MSR_MASK 0xf0
52af9545 BP	32
79f203a2	33	#define SERIAL_CRTSCTS ((UART_MCR_RTS << 8) \| UART_MSR_CTS)
52af9545	34
79f203a2	35	#define SERIAL_EVEN_PARITY (UART_LCR_PARITY \| UART_LCR_EPAR)
52af9545 BP	36
	37	#define MAX_BAUD_RATE 460800
	38
	39	#define ATC_DISABLED 0x00
	40	#define DUPMODE_BITS 0xc0
	41	#define RR_BITS 0x03
	42	#define LOOPMODE_BITS 0x41
	43	#define RS232_MODE 0x00
	44	#define RTSCTS_TO_CONNECTOR 0x40
	45	#define CLKS_X4 0x02
	46	#define FULLPWRBIT 0x00000080
	47	#define NEXT_BOARD_POWER_BIT 0x00000004
	48
52af9545 BP	49	#define DRIVER_DESC "Quatech SSU-100 USB to Serial Driver"
	50
	51	#define USB_VENDOR_ID_QUATECH 0x061d /* Quatech VID */
	52	#define QUATECH_SSU100 0xC020 /* SSU100 */
	53
	54	static const struct usb_device_id id_table[] = {
	55	{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)},
	56	{} /* Terminating entry */
	57	};
52af9545 BP	58	MODULE_DEVICE_TABLE(usb, id_table);
52af9545 BP	59
52af9545	60	struct ssu100_port_private {
17523058	61	spinlock_t status_lock;
52af9545 BP	62	u8 shadowLSR;
	63	u8 shadowMSR;
	64	wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
f81c83db	65	struct async_icount icount;
52af9545 BP	66	};
52af9545 BP	67
52af9545 BP	68	static inline int ssu100_control_msg(struct usb_device *dev,
	69	u8 request, u16 data, u16 index)
	70	{
	71	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	72	request, 0x40, data, index,
	73	NULL, 0, 300);
	74	}
	75
	76	static inline int ssu100_setdevice(struct usb_device dev, u8 data)
	77	{
	78	u16 x = ((u16)(data[1] << 8) \| (u16)(data[0]));
	79
	80	return ssu100_control_msg(dev, QT_SET_GET_DEVICE, x, 0);
	81	}
	82
	83
	84	static inline int ssu100_getdevice(struct usb_device dev, u8 data)
	85	{
	86	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	87	QT_SET_GET_DEVICE, 0xc0, 0, 0,
	88	data, 3, 300);
	89	}
	90
	91	static inline int ssu100_getregister(struct usb_device *dev,
	92	unsigned short uart,
	93	unsigned short reg,
	94	u8 *data)
	95	{
	96	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	97	QT_SET_GET_REGISTER, 0xc0, reg,
	98	uart, data, sizeof(*data), 300);
	99
	100	}
	101
	102
	103	static inline int ssu100_setregister(struct usb_device *dev,
	104	unsigned short uart,
556f1a0e	105	unsigned short reg,
52af9545 BP	106	u16 data)
52af9545 BP	107	{
556f1a0e	108	u16 value = (data << 8) \| reg;
52af9545 BP	109
	110	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	111	QT_SET_GET_REGISTER, 0x40, value, uart,
	112	NULL, 0, 300);
	113
	114	}
	115
	116	#define set_mctrl(dev, set) update_mctrl((dev), (set), 0)
	117	#define clear_mctrl(dev, clear) update_mctrl((dev), 0, (clear))
	118
	119	/* these do not deal with device that have more than 1 port */
	120	static inline int update_mctrl(struct usb_device *dev, unsigned int set,
	121	unsigned int clear)
	122	{
	123	unsigned urb_value;
	124	int result;
	125
	126	if (((set \| clear) & (TIOCM_DTR \| TIOCM_RTS)) == 0) {
4f0c6412	127	dev_dbg(&dev->dev, "%s - DTR\|RTS not being set\|cleared\n", __func__);
52af9545 BP	128	return 0; /* no change */
	129	}
	130
	131	clear &= ~set; /* 'set' takes precedence over 'clear' */
	132	urb_value = 0;
	133	if (set & TIOCM_DTR)
79f203a2	134	urb_value \|= UART_MCR_DTR;
52af9545	135	if (set & TIOCM_RTS)
79f203a2	136	urb_value \|= UART_MCR_RTS;
52af9545	137
556f1a0e	138	result = ssu100_setregister(dev, 0, UART_MCR, urb_value);
52af9545	139	if (result < 0)
4f0c6412	140	dev_dbg(&dev->dev, "%s Error from MODEM_CTRL urb\n", __func__);
52af9545 BP	141
	142	return result;
	143	}
	144
	145	static int ssu100_initdevice(struct usb_device *dev)
	146	{
	147	u8 *data;
	148	int result = 0;
	149
52af9545 BP	150	data = kzalloc(3, GFP_KERNEL);
	151	if (!data)
	152	return -ENOMEM;
	153
	154	result = ssu100_getdevice(dev, data);
	155	if (result < 0) {
4f0c6412	156	dev_dbg(&dev->dev, "%s - get_device failed %i\n", __func__, result);
52af9545 BP	157	goto out;
	158	}
	159
	160	data[1] &= ~FULLPWRBIT;
	161
	162	result = ssu100_setdevice(dev, data);
	163	if (result < 0) {
4f0c6412	164	dev_dbg(&dev->dev, "%s - setdevice failed %i\n", __func__, result);
52af9545 BP	165	goto out;
	166	}
	167
	168	result = ssu100_control_msg(dev, QT_GET_SET_PREBUF_TRIG_LVL, 128, 0);
	169	if (result < 0) {
4f0c6412	170	dev_dbg(&dev->dev, "%s - set prebuffer level failed %i\n", __func__, result);
52af9545 BP	171	goto out;
	172	}
	173
	174	result = ssu100_control_msg(dev, QT_SET_ATF, ATC_DISABLED, 0);
	175	if (result < 0) {
4f0c6412	176	dev_dbg(&dev->dev, "%s - set ATFprebuffer level failed %i\n", __func__, result);
52af9545 BP	177	goto out;
	178	}
	179
	180	result = ssu100_getdevice(dev, data);
	181	if (result < 0) {
4f0c6412	182	dev_dbg(&dev->dev, "%s - get_device failed %i\n", __func__, result);
52af9545 BP	183	goto out;
	184	}
	185
	186	data[0] &= ~(RR_BITS \| DUPMODE_BITS);
	187	data[0] \|= CLKS_X4;
	188	data[1] &= ~(LOOPMODE_BITS);
	189	data[1] \|= RS232_MODE;
	190
	191	result = ssu100_setdevice(dev, data);
	192	if (result < 0) {
4f0c6412	193	dev_dbg(&dev->dev, "%s - setdevice failed %i\n", __func__, result);
52af9545 BP	194	goto out;
	195	}
	196
	197	out: kfree(data);
	198	return result;
	199
	200	}
	201
	202
	203	static void ssu100_set_termios(struct tty_struct *tty,
	204	struct usb_serial_port *port,
	205	struct ktermios *old_termios)
	206	{
	207	struct usb_device *dev = port->serial->dev;
adc8d746	208	struct ktermios *termios = &tty->termios;
52af9545 BP	209	u16 baud, divisor, remainder;
	210	unsigned int cflag = termios->c_cflag;
	211	u16 urb_value = 0; /* will hold the new flags */
	212	int result;
	213
52af9545 BP	214	if (cflag & PARENB) {
52af9545 BP	215	if (cflag & PARODD)
79f203a2	216	urb_value \|= UART_LCR_PARITY;
52af9545 BP	217	else
	218	urb_value \|= SERIAL_EVEN_PARITY;
	219	}
	220
	221	switch (cflag & CSIZE) {
	222	case CS5:
79f203a2	223	urb_value \|= UART_LCR_WLEN5;
52af9545 BP	224	break;
52af9545 BP	225	case CS6:
79f203a2	226	urb_value \|= UART_LCR_WLEN6;
52af9545 BP	227	break;
52af9545 BP	228	case CS7:
79f203a2	229	urb_value \|= UART_LCR_WLEN7;
52af9545 BP	230	break;
	231	default:
	232	case CS8:
79f203a2	233	urb_value \|= UART_LCR_WLEN8;
52af9545 BP	234	break;
	235	}
	236
	237	baud = tty_get_baud_rate(tty);
	238	if (!baud)
	239	baud = 9600;
	240
4f0c6412	241	dev_dbg(&port->dev, "%s - got baud = %d\n", __func__, baud);
52af9545 BP	242
	243
	244	divisor = MAX_BAUD_RATE / baud;
	245	remainder = MAX_BAUD_RATE % baud;
	246	if (((remainder * 2) >= baud) && (baud != 110))
	247	divisor++;
	248
	249	urb_value = urb_value << 8;
	250
	251	result = ssu100_control_msg(dev, QT_GET_SET_UART, divisor, urb_value);
	252	if (result < 0)
4f0c6412	253	dev_dbg(&port->dev, "%s - set uart failed\n", __func__);
52af9545 BP	254
	255	if (cflag & CRTSCTS)
	256	result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
	257	SERIAL_CRTSCTS, 0);
	258	else
	259	result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
	260	0, 0);
	261	if (result < 0)
4f0c6412	262	dev_dbg(&port->dev, "%s - set HW flow control failed\n", __func__);
52af9545 BP	263
	264	if (I_IXOFF(tty) \|\| I_IXON(tty)) {
	265	u16 x = ((u16)(START_CHAR(tty) << 8) \| (u16)(STOP_CHAR(tty)));
	266
	267	result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
	268	x, 0);
	269	} else
	270	result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
	271	0, 0);
	272
	273	if (result < 0)
4f0c6412	274	dev_dbg(&port->dev, "%s - set SW flow control failed\n", __func__);
52af9545 BP	275
	276	}
	277
	278
	279	static int ssu100_open(struct tty_struct tty, struct usb_serial_port port)
	280	{
	281	struct usb_device *dev = port->serial->dev;
	282	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	283	u8 *data;
	284	int result;
17523058	285	unsigned long flags;
52af9545	286
52af9545 BP	287	data = kzalloc(2, GFP_KERNEL);
	288	if (!data)
	289	return -ENOMEM;
	290
	291	result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	292	QT_OPEN_CLOSE_CHANNEL,
	293	QT_TRANSFER_IN, 0x01,
	294	0, data, 2, 300);
	295	if (result < 0) {
4f0c6412	296	dev_dbg(&port->dev, "%s - open failed %i\n", __func__, result);
52af9545 BP	297	kfree(data);
	298	return result;
	299	}
	300
17523058	301	spin_lock_irqsave(&priv->status_lock, flags);
f81c83db BP	302	priv->shadowLSR = data[0];
f81c83db BP	303	priv->shadowMSR = data[1];
17523058	304	spin_unlock_irqrestore(&priv->status_lock, flags);
52af9545 BP	305
	306	kfree(data);
	307
	308	/* set to 9600 */
	309	result = ssu100_control_msg(dev, QT_GET_SET_UART, 0x30, 0x0300);
	310	if (result < 0)
4f0c6412	311	dev_dbg(&port->dev, "%s - set uart failed\n", __func__);
52af9545 BP	312
52af9545 BP	313	if (tty)
adc8d746	314	ssu100_set_termios(tty, port, &tty->termios);
52af9545 BP	315
	316	return usb_serial_generic_open(tty, port);
	317	}
	318
	319	static void ssu100_close(struct usb_serial_port *port)
	320	{
52af9545 BP	321	usb_serial_generic_close(port);
	322	}
	323
	324	static int get_serial_info(struct usb_serial_port *port,
	325	struct serial_struct __user *retinfo)
	326	{
	327	struct serial_struct tmp;
	328
	329	if (!retinfo)
	330	return -EFAULT;
	331
	332	memset(&tmp, 0, sizeof(tmp));
	333	tmp.line = port->serial->minor;
	334	tmp.port = 0;
	335	tmp.irq = 0;
	336	tmp.flags = ASYNC_SKIP_TEST \| ASYNC_AUTO_IRQ;
	337	tmp.xmit_fifo_size = port->bulk_out_size;
	338	tmp.baud_base = 9600;
	339	tmp.close_delay = 5*HZ;
	340	tmp.closing_wait = 30*HZ;
	341
	342	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
	343	return -EFAULT;
	344	return 0;
	345	}
	346
f81c83db BP	347	static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
	348	{
	349	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	350	struct async_icount prev, cur;
	351	unsigned long flags;
	352
	353	spin_lock_irqsave(&priv->status_lock, flags);
	354	prev = priv->icount;
	355	spin_unlock_irqrestore(&priv->status_lock, flags);
	356
	357	while (1) {
	358	wait_event_interruptible(priv->delta_msr_wait,
	359	((priv->icount.rng != prev.rng) \|\|
	360	(priv->icount.dsr != prev.dsr) \|\|
	361	(priv->icount.dcd != prev.dcd) \|\|
	362	(priv->icount.cts != prev.cts)));
	363
	364	if (signal_pending(current))
	365	return -ERESTARTSYS;
	366
	367	spin_lock_irqsave(&priv->status_lock, flags);
	368	cur = priv->icount;
	369	spin_unlock_irqrestore(&priv->status_lock, flags);
	370
	371	if ((prev.rng == cur.rng) &&
	372	(prev.dsr == cur.dsr) &&
	373	(prev.dcd == cur.dcd) &&
	374	(prev.cts == cur.cts))
	375	return -EIO;
	376
	377	if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) \|\|
	378	(arg & TIOCM_DSR && (prev.dsr != cur.dsr)) \|\|
	379	(arg & TIOCM_CD && (prev.dcd != cur.dcd)) \|\|
	380	(arg & TIOCM_CTS && (prev.cts != cur.cts)))
	381	return 0;
	382	}
	383	return 0;
	384	}
	385
0bca1b91 AC	386	static int ssu100_get_icount(struct tty_struct *tty,
	387	struct serial_icounter_struct *icount)
	388	{
	389	struct usb_serial_port *port = tty->driver_data;
	390	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	391	struct async_icount cnow = priv->icount;
	392
	393	icount->cts = cnow.cts;
	394	icount->dsr = cnow.dsr;
	395	icount->rng = cnow.rng;
	396	icount->dcd = cnow.dcd;
	397	icount->rx = cnow.rx;
	398	icount->tx = cnow.tx;
	399	icount->frame = cnow.frame;
	400	icount->overrun = cnow.overrun;
	401	icount->parity = cnow.parity;
	402	icount->brk = cnow.brk;
	403	icount->buf_overrun = cnow.buf_overrun;
	404
	405	return 0;
	406	}
	407
	408
	409
00a0d0d6	410	static int ssu100_ioctl(struct tty_struct *tty,
52af9545 BP	411	unsigned int cmd, unsigned long arg)
	412	{
	413	struct usb_serial_port *port = tty->driver_data;
52af9545	414
4f0c6412	415	dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd);
52af9545 BP	416
	417	switch (cmd) {
	418	case TIOCGSERIAL:
	419	return get_serial_info(port,
	420	(struct serial_struct __user *) arg);
	421
	422	case TIOCMIWAIT:
f81c83db BP	423	return wait_modem_info(port, arg);
f81c83db BP	424
52af9545 BP	425	default:
	426	break;
	427	}
	428
4f0c6412	429	dev_dbg(&port->dev, "%s arg not supported\n", __func__);
52af9545 BP	430
	431	return -ENOIOCTLCMD;
	432	}
	433
52af9545	434	static int ssu100_attach(struct usb_serial *serial)
638b9e15 JH	435	{
	436	return ssu100_initdevice(serial->dev);
	437	}
	438
	439	static int ssu100_port_probe(struct usb_serial_port *port)
52af9545 BP	440	{
52af9545 BP	441	struct ssu100_port_private *priv;
52af9545	442
52af9545	443	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
638b9e15	444	if (!priv)
52af9545	445	return -ENOMEM;
52af9545	446
17523058	447	spin_lock_init(&priv->status_lock);
52af9545	448	init_waitqueue_head(&priv->delta_msr_wait);
638b9e15	449
52af9545	450	usb_set_serial_port_data(port, priv);
52af9545	451
638b9e15 JH	452	return 0;
	453	}
	454
	455	static int ssu100_port_remove(struct usb_serial_port *port)
	456	{
	457	struct ssu100_port_private *priv;
	458
	459	priv = usb_get_serial_port_data(port);
	460	kfree(priv);
	461
	462	return 0;
52af9545 BP	463	}
52af9545 BP	464
60b33c13	465	static int ssu100_tiocmget(struct tty_struct *tty)
52af9545 BP	466	{
	467	struct usb_serial_port *port = tty->driver_data;
	468	struct usb_device *dev = port->serial->dev;
	469	u8 *d;
	470	int r;
	471
52af9545 BP	472	d = kzalloc(2, GFP_KERNEL);
	473	if (!d)
	474	return -ENOMEM;
	475
79f203a2	476	r = ssu100_getregister(dev, 0, UART_MCR, d);
52af9545 BP	477	if (r < 0)
	478	goto mget_out;
	479
79f203a2	480	r = ssu100_getregister(dev, 0, UART_MSR, d+1);
52af9545 BP	481	if (r < 0)
	482	goto mget_out;
	483
79f203a2 BP	484	r = (d[0] & UART_MCR_DTR ? TIOCM_DTR : 0) \|
	485	(d[0] & UART_MCR_RTS ? TIOCM_RTS : 0) \|
	486	(d[1] & UART_MSR_CTS ? TIOCM_CTS : 0) \|
	487	(d[1] & UART_MSR_DCD ? TIOCM_CAR : 0) \|
	488	(d[1] & UART_MSR_RI ? TIOCM_RI : 0) \|
	489	(d[1] & UART_MSR_DSR ? TIOCM_DSR : 0);
52af9545 BP	490
	491	mget_out:
	492	kfree(d);
	493	return r;
	494	}
	495
20b9d177	496	static int ssu100_tiocmset(struct tty_struct *tty,
52af9545 BP	497	unsigned int set, unsigned int clear)
	498	{
	499	struct usb_serial_port *port = tty->driver_data;
	500	struct usb_device *dev = port->serial->dev;
	501
52af9545 BP	502	return update_mctrl(dev, set, clear);
	503	}
	504
	505	static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
	506	{
	507	struct usb_device *dev = port->serial->dev;
	508
52af9545 BP	509	mutex_lock(&port->serial->disc_mutex);
	510	if (!port->serial->disconnected) {
	511	/* Disable flow control */
	512	if (!on &&
556f1a0e	513	ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
52af9545 BP	514	dev_err(&port->dev, "error from flowcontrol urb\n");
	515	/* drop RTS and DTR */
	516	if (on)
	517	set_mctrl(dev, TIOCM_DTR \| TIOCM_RTS);
	518	else
	519	clear_mctrl(dev, TIOCM_DTR \| TIOCM_RTS);
	520	}
	521	mutex_unlock(&port->serial->disc_mutex);
	522	}
	523
f81c83db BP	524	static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
	525	{
	526	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	527	unsigned long flags;
	528
	529	spin_lock_irqsave(&priv->status_lock, flags);
	530	priv->shadowMSR = msr;
	531	spin_unlock_irqrestore(&priv->status_lock, flags);
	532
	533	if (msr & UART_MSR_ANY_DELTA) {
	534	/* update input line counters */
	535	if (msr & UART_MSR_DCTS)
	536	priv->icount.cts++;
	537	if (msr & UART_MSR_DDSR)
	538	priv->icount.dsr++;
	539	if (msr & UART_MSR_DDCD)
	540	priv->icount.dcd++;
	541	if (msr & UART_MSR_TERI)
	542	priv->icount.rng++;
	543	wake_up_interruptible(&priv->delta_msr_wait);
	544	}
	545	}
	546
6b8f1ca5 BP	547	static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
6b8f1ca5 BP	548	char *tty_flag)
f81c83db BP	549	{
	550	struct ssu100_port_private *priv = usb_get_serial_port_data(port);
	551	unsigned long flags;
	552
	553	spin_lock_irqsave(&priv->status_lock, flags);
	554	priv->shadowLSR = lsr;
	555	spin_unlock_irqrestore(&priv->status_lock, flags);
	556
6b8f1ca5	557	*tty_flag = TTY_NORMAL;
f81c83db	558	if (lsr & UART_LSR_BRK_ERROR_BITS) {
6b8f1ca5 BP	559	/* we always want to update icount, but we only want to
	560	* update tty_flag for one case */
	561	if (lsr & UART_LSR_BI) {
f81c83db	562	priv->icount.brk++;
6b8f1ca5 BP	563	*tty_flag = TTY_BREAK;
	564	usb_serial_handle_break(port);
	565	}
	566	if (lsr & UART_LSR_PE) {
f81c83db	567	priv->icount.parity++;
6b8f1ca5 BP	568	if (*tty_flag == TTY_NORMAL)
	569	*tty_flag = TTY_PARITY;
	570	}
	571	if (lsr & UART_LSR_FE) {
	572	priv->icount.frame++;
	573	if (*tty_flag == TTY_NORMAL)
	574	*tty_flag = TTY_FRAME;
	575	}
	576	if (lsr & UART_LSR_OE){
f81c83db	577	priv->icount.overrun++;
6b8f1ca5 BP	578	if (*tty_flag == TTY_NORMAL)
	579	*tty_flag = TTY_OVERRUN;
	580	}
f81c83db	581	}
6b8f1ca5	582
f81c83db BP	583	}
f81c83db BP	584
f7043ecb BP	585	static int ssu100_process_packet(struct urb *urb,
f7043ecb BP	586	struct tty_struct *tty)
52af9545	587	{
f7043ecb BP	588	struct usb_serial_port *port = urb->context;
f7043ecb BP	589	char packet = (char )urb->transfer_buffer;
6b8f1ca5	590	char flag = TTY_NORMAL;
f7043ecb BP	591	u32 len = urb->actual_length;
f7043ecb BP	592	int i;
52af9545 BP	593	char *ch;
52af9545 BP	594
9b2cef31 BP	595	if ((len >= 4) &&
9b2cef31 BP	596	(packet[0] == 0x1b) && (packet[1] == 0x1b) &&
52af9545	597	((packet[2] == 0x00) \|\| (packet[2] == 0x01))) {
6b8f1ca5 BP	598	if (packet[2] == 0x00) {
	599	ssu100_update_lsr(port, packet[3], &flag);
	600	if (flag == TTY_OVERRUN)
	601	tty_insert_flip_char(tty, 0, TTY_OVERRUN);
	602	}
f81c83db BP	603	if (packet[2] == 0x01)
f81c83db BP	604	ssu100_update_msr(port, packet[3]);
52af9545 BP	605
	606	len -= 4;
	607	ch = packet + 4;
	608	} else
	609	ch = packet;
	610
	611	if (!len)
	612	return 0; /* status only */
	613
	614	if (port->port.console && port->sysrq) {
	615	for (i = 0; i < len; i++, ch++) {
6ee9f4b4	616	if (!usb_serial_handle_sysrq_char(port, *ch))
52af9545 BP	617	tty_insert_flip_char(tty, *ch, flag);
	618	}
	619	} else
2f693357	620	tty_insert_flip_string_fixed_flag(&port->port, ch, flag, len);
52af9545 BP	621
	622	return len;
	623	}
	624
	625	static void ssu100_process_read_urb(struct urb *urb)
	626	{
	627	struct usb_serial_port *port = urb->context;
52af9545	628	struct tty_struct *tty;
f7043ecb	629	int count;
52af9545	630
52af9545 BP	631	tty = tty_port_tty_get(&port->port);
	632	if (!tty)
	633	return;
	634
f7043ecb	635	count = ssu100_process_packet(urb, tty);
52af9545 BP	636
	637	if (count)
	638	tty_flip_buffer_push(tty);
	639	tty_kref_put(tty);
	640	}
	641
52af9545 BP	642	static struct usb_serial_driver ssu100_device = {
	643	.driver = {
	644	.owner = THIS_MODULE,
	645	.name = "ssu100",
	646	},
	647	.description = DRIVER_DESC,
	648	.id_table = id_table,
52af9545	649	.num_ports = 1,
52af9545 BP	650	.open = ssu100_open,
	651	.close = ssu100_close,
	652	.attach = ssu100_attach,
638b9e15 JH	653	.port_probe = ssu100_port_probe,
638b9e15 JH	654	.port_remove = ssu100_port_remove,
52af9545 BP	655	.dtr_rts = ssu100_dtr_rts,
	656	.process_read_urb = ssu100_process_read_urb,
	657	.tiocmget = ssu100_tiocmget,
	658	.tiocmset = ssu100_tiocmset,
0bca1b91	659	.get_icount = ssu100_get_icount,
52af9545 BP	660	.ioctl = ssu100_ioctl,
52af9545 BP	661	.set_termios = ssu100_set_termios,
85dee135	662	.disconnect = usb_serial_generic_disconnect,
52af9545 BP	663	};
52af9545 BP	664
d860322f AS	665	static struct usb_serial_driver * const serial_drivers[] = {
	666	&ssu100_device, NULL
	667	};
	668
68e24113	669	module_usb_serial_driver(serial_drivers, id_table);
52af9545 BP	670
	671	MODULE_DESCRIPTION(DRIVER_DESC);
	672	MODULE_LICENSE("GPL");