[mirror_ubuntu-bionic-kernel.git] / drivers / usb / serial / sierra.c

/*
  USB Driver for Sierra Wireless

  Copyright (C) 2006  Kevin Lloyd <linux@sierrawireless.com>

  IMPORTANT DISCLAIMER: This driver is not commercially supported by
  Sierra Wireless. Use at your own risk.

  This driver is free software; you can redistribute it and/or modify
  it under the terms of Version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
  Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>

  History:
*/

#define DRIVER_VERSION "v.1.0.5"
#define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"

#include <linux/kernel.h>
#include <linux/jiffies.h>
#include <linux/errno.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>


static struct usb_device_id id_table [] = {
	{ USB_DEVICE(0x1199, 0x0018) },	/* Sierra Wireless MC5720 */
	{ USB_DEVICE(0x1199, 0x0020) },	/* Sierra Wireless MC5725 */
	{ USB_DEVICE(0x1199, 0x0017) },	/* Sierra Wireless EM5625 */
	{ USB_DEVICE(0x1199, 0x0019) },	/* Sierra Wireless AirCard 595 */
	{ USB_DEVICE(0x1199, 0x0218) },	/* Sierra Wireless MC5720 */
	{ USB_DEVICE(0x1199, 0x6802) },	/* Sierra Wireless MC8755 */
	{ USB_DEVICE(0x1199, 0x6803) },	/* Sierra Wireless MC8765 */
	{ USB_DEVICE(0x1199, 0x6804) },	/* Sierra Wireless MC8755 for Europe */
	{ USB_DEVICE(0x1199, 0x6812) },	/* Sierra Wireless MC8775 */
	{ USB_DEVICE(0x1199, 0x6820) },	/* Sierra Wireless AirCard 875 */

	{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
	{ USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
	{ }
};
MODULE_DEVICE_TABLE(usb, id_table);

static struct usb_device_id id_table_1port [] = {
	{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
	{ USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
	{ }
};

static struct usb_device_id id_table_3port [] = {
	{ USB_DEVICE(0x1199, 0x0018) },	/* Sierra Wireless MC5720 */
	{ USB_DEVICE(0x1199, 0x0020) },	/* Sierra Wireless MC5725 */
	{ USB_DEVICE(0x1199, 0x0017) },	/* Sierra Wireless EM5625 */
	{ USB_DEVICE(0x1199, 0x0019) },	/* Sierra Wireless AirCard 595 */
	{ USB_DEVICE(0x1199, 0x0218) },	/* Sierra Wireless MC5720 */
	{ USB_DEVICE(0x1199, 0x6802) },	/* Sierra Wireless MC8755 */
	{ USB_DEVICE(0x1199, 0x6803) },	/* Sierra Wireless MC8765 */
	{ USB_DEVICE(0x1199, 0x6804) },	/* Sierra Wireless MC8755 for Europe */
	{ USB_DEVICE(0x1199, 0x6812) },	/* Sierra Wireless MC8775 */
	{ USB_DEVICE(0x1199, 0x6820) },	/* Sierra Wireless AirCard 875 */
	{ }
};

static struct usb_driver sierra_driver = {
	.name       = "sierra",
	.probe      = usb_serial_probe,
	.disconnect = usb_serial_disconnect,
	.id_table   = id_table,
	.no_dynamic_id = 	1,
};


static int debug;

/* per port private data */
#define N_IN_URB	4
#define N_OUT_URB	1
#define IN_BUFLEN	4096
#define OUT_BUFLEN	128

struct sierra_port_private {
	/* Input endpoints and buffer for this port */
	struct urb *in_urbs[N_IN_URB];
	char in_buffer[N_IN_URB][IN_BUFLEN];
	/* Output endpoints and buffer for this port */
	struct urb *out_urbs[N_OUT_URB];
	char out_buffer[N_OUT_URB][OUT_BUFLEN];

	/* Settings for the port */
	int rts_state;	/* Handshaking pins (outputs) */
	int dtr_state;
	int cts_state;	/* Handshaking pins (inputs) */
	int dsr_state;
	int dcd_state;
	int ri_state;

	unsigned long tx_start_time[N_OUT_URB];
};

static int sierra_send_setup(struct usb_serial_port *port)
{
	struct usb_serial *serial = port->serial;
	struct sierra_port_private *portdata;

	dbg("%s", __FUNCTION__);

	portdata = usb_get_serial_port_data(port);

	if (port->tty) {
		int val = 0;
		if (portdata->dtr_state)
			val |= 0x01;
		if (portdata->rts_state)
			val |= 0x02;

		return usb_control_msg(serial->dev,
				usb_rcvctrlpipe(serial->dev, 0),
				0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
	}

	return 0;
}

static void sierra_rx_throttle(struct usb_serial_port *port)
{
	dbg("%s", __FUNCTION__);
}

static void sierra_rx_unthrottle(struct usb_serial_port *port)
{
	dbg("%s", __FUNCTION__);
}

static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
{
	/* Unfortunately, I don't know how to send a break */
	dbg("%s", __FUNCTION__);
}

static void sierra_set_termios(struct usb_serial_port *port,
			struct ktermios *old_termios)
{
	dbg("%s", __FUNCTION__);

	sierra_send_setup(port);
}

static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
{
	unsigned int value;
	struct sierra_port_private *portdata;

	portdata = usb_get_serial_port_data(port);

	value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
		((portdata->dtr_state) ? TIOCM_DTR : 0) |
		((portdata->cts_state) ? TIOCM_CTS : 0) |
		((portdata->dsr_state) ? TIOCM_DSR : 0) |
		((portdata->dcd_state) ? TIOCM_CAR : 0) |
		((portdata->ri_state) ? TIOCM_RNG : 0);

	return value;
}

static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
			unsigned int set, unsigned int clear)
{
	struct sierra_port_private *portdata;

	portdata = usb_get_serial_port_data(port);

	if (set & TIOCM_RTS)
		portdata->rts_state = 1;
	if (set & TIOCM_DTR)
		portdata->dtr_state = 1;

	if (clear & TIOCM_RTS)
		portdata->rts_state = 0;
	if (clear & TIOCM_DTR)
		portdata->dtr_state = 0;
	return sierra_send_setup(port);
}

static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
			unsigned int cmd, unsigned long arg)
{
	return -ENOIOCTLCMD;
}

/* Write */
static int sierra_write(struct usb_serial_port *port,
			const unsigned char *buf, int count)
{
	struct sierra_port_private *portdata;
	int i;
	int left, todo;
	struct urb *this_urb = NULL; /* spurious */
	int err;

	portdata = usb_get_serial_port_data(port);

	dbg("%s: write (%d chars)", __FUNCTION__, count);

	i = 0;
	left = count;
	for (i=0; left > 0 && i < N_OUT_URB; i++) {
		todo = left;
		if (todo > OUT_BUFLEN)
			todo = OUT_BUFLEN;

		this_urb = portdata->out_urbs[i];
		if (this_urb->status == -EINPROGRESS) {
			if (time_before(jiffies,
					portdata->tx_start_time[i] + 10 * HZ))
				continue;
			usb_unlink_urb(this_urb);
			continue;
		}
		if (this_urb->status != 0)
			dbg("usb_write %p failed (err=%d)",
				this_urb, this_urb->status);

		dbg("%s: endpoint %d buf %d", __FUNCTION__,
			usb_pipeendpoint(this_urb->pipe), i);

		/* send the data */
		memcpy (this_urb->transfer_buffer, buf, todo);
		this_urb->transfer_buffer_length = todo;

		this_urb->dev = port->serial->dev;
		err = usb_submit_urb(this_urb, GFP_ATOMIC);
		if (err) {
			dbg("usb_submit_urb %p (write bulk) failed "
				"(%d, has %d)", this_urb,
				err, this_urb->status);
			continue;
		}
		portdata->tx_start_time[i] = jiffies;
		buf += todo;
		left -= todo;
	}

	count -= left;
	dbg("%s: wrote (did %d)", __FUNCTION__, count);
	return count;
}

static void sierra_indat_callback(struct urb *urb)
{
	int err;
	int endpoint;
	struct usb_serial_port *port;
	struct tty_struct *tty;
	unsigned char *data = urb->transfer_buffer;

	dbg("%s: %p", __FUNCTION__, urb);

	endpoint = usb_pipeendpoint(urb->pipe);
	port = (struct usb_serial_port *) urb->context;

	if (urb->status) {
		dbg("%s: nonzero status: %d on endpoint %02x.",
		    __FUNCTION__, urb->status, endpoint);
	} else {
		tty = port->tty;
		if (urb->actual_length) {
			tty_buffer_request_room(tty, urb->actual_length);
			tty_insert_flip_string(tty, data, urb->actual_length);
			tty_flip_buffer_push(tty);
		} else {
			dbg("%s: empty read urb received", __FUNCTION__);
		}

		/* Resubmit urb so we continue receiving */
		if (port->open_count && urb->status != -ESHUTDOWN) {
			err = usb_submit_urb(urb, GFP_ATOMIC);
			if (err)
				printk(KERN_ERR "%s: resubmit read urb failed. "
					"(%d)", __FUNCTION__, err);
		}
	}
	return;
}

static void sierra_outdat_callback(struct urb *urb)
{
	struct usb_serial_port *port;

	dbg("%s", __FUNCTION__);

	port = (struct usb_serial_port *) urb->context;

	usb_serial_port_softint(port);
}

static void sierra_instat_callback(struct urb *urb)
{
	int err;
	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
	struct sierra_port_private *portdata = usb_get_serial_port_data(port);
	struct usb_serial *serial = port->serial;

	dbg("%s", __FUNCTION__);
	dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);

	if (urb->status == 0) {
		struct usb_ctrlrequest *req_pkt =
				(struct usb_ctrlrequest *)urb->transfer_buffer;

		if (!req_pkt) {
			dbg("%s: NULL req_pkt\n", __FUNCTION__);
			return;
		}
		if ((req_pkt->bRequestType == 0xA1) &&
				(req_pkt->bRequest == 0x20)) {
			int old_dcd_state;
			unsigned char signals = *((unsigned char *)
					urb->transfer_buffer +
					sizeof(struct usb_ctrlrequest));

			dbg("%s: signal x%x", __FUNCTION__, signals);

			old_dcd_state = portdata->dcd_state;
			portdata->cts_state = 1;
			portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
			portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
			portdata->ri_state = ((signals & 0x08) ? 1 : 0);

			if (port->tty && !C_CLOCAL(port->tty) &&
					old_dcd_state && !portdata->dcd_state)
				tty_hangup(port->tty);
		} else {
			dbg("%s: type %x req %x", __FUNCTION__,
				req_pkt->bRequestType,req_pkt->bRequest);
		}
	} else
		dbg("%s: error %d", __FUNCTION__, urb->status);

	/* Resubmit urb so we continue receiving IRQ data */
	if (urb->status != -ESHUTDOWN) {
		urb->dev = serial->dev;
		err = usb_submit_urb(urb, GFP_ATOMIC);
		if (err)
			dbg("%s: resubmit intr urb failed. (%d)",
				__FUNCTION__, err);
	}
}

static int sierra_write_room(struct usb_serial_port *port)
{
	struct sierra_port_private *portdata;
	int i;
	int data_len = 0;
	struct urb *this_urb;

	portdata = usb_get_serial_port_data(port);

	for (i=0; i < N_OUT_URB; i++) {
		this_urb = portdata->out_urbs[i];
		if (this_urb && this_urb->status != -EINPROGRESS)
			data_len += OUT_BUFLEN;
	}

	dbg("%s: %d", __FUNCTION__, data_len);
	return data_len;
}

static int sierra_chars_in_buffer(struct usb_serial_port *port)
{
	struct sierra_port_private *portdata;
	int i;
	int data_len = 0;
	struct urb *this_urb;

	portdata = usb_get_serial_port_data(port);

	for (i=0; i < N_OUT_URB; i++) {
		this_urb = portdata->out_urbs[i];
		if (this_urb && this_urb->status == -EINPROGRESS)
			data_len += this_urb->transfer_buffer_length;
	}
	dbg("%s: %d", __FUNCTION__, data_len);
	return data_len;
}

static int sierra_open(struct usb_serial_port *port, struct file *filp)
{
	struct sierra_port_private *portdata;
	struct usb_serial *serial = port->serial;
	int i, err;
	struct urb *urb;

	portdata = usb_get_serial_port_data(port);

	dbg("%s", __FUNCTION__);

	/* Set some sane defaults */
	portdata->rts_state = 1;
	portdata->dtr_state = 1;

	/* Reset low level data toggle and start reading from endpoints */
	for (i = 0; i < N_IN_URB; i++) {
		urb = portdata->in_urbs[i];
		if (! urb)
			continue;
		if (urb->dev != serial->dev) {
			dbg("%s: dev %p != %p", __FUNCTION__,
				urb->dev, serial->dev);
			continue;
		}

		/*
		 * make sure endpoint data toggle is synchronized with the
		 * device
		 */
		usb_clear_halt(urb->dev, urb->pipe);

		err = usb_submit_urb(urb, GFP_KERNEL);
		if (err) {
			dbg("%s: submit urb %d failed (%d) %d",
				__FUNCTION__, i, err,
				urb->transfer_buffer_length);
		}
	}

	/* Reset low level data toggle on out endpoints */
	for (i = 0; i < N_OUT_URB; i++) {
		urb = portdata->out_urbs[i];
		if (! urb)
			continue;
		urb->dev = serial->dev;
		/* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
				usb_pipeout(urb->pipe), 0); */
	}

	port->tty->low_latency = 1;

	sierra_send_setup(port);

	return (0);
}

static inline void stop_urb(struct urb *urb)
{
	if (urb && urb->status == -EINPROGRESS)
		usb_kill_urb(urb);
}

static void sierra_close(struct usb_serial_port *port, struct file *filp)
{
	int i;
	struct usb_serial *serial = port->serial;
	struct sierra_port_private *portdata;

	dbg("%s", __FUNCTION__);
	portdata = usb_get_serial_port_data(port);

	portdata->rts_state = 0;
	portdata->dtr_state = 0;

	if (serial->dev) {
		sierra_send_setup(port);

		/* Stop reading/writing urbs */
		for (i = 0; i < N_IN_URB; i++)
			stop_urb(portdata->in_urbs[i]);
		for (i = 0; i < N_OUT_URB; i++)
			stop_urb(portdata->out_urbs[i]);
	}
	port->tty = NULL;
}

/* Helper functions used by sierra_setup_urbs */
static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
				    int dir, void *ctx, char *buf, int len,
				    usb_complete_t callback)
{
	struct urb *urb;

	if (endpoint == -1)
		return NULL;		/* endpoint not needed */

	urb = usb_alloc_urb(0, GFP_KERNEL);		/* No ISO */
	if (urb == NULL) {
		dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
		return NULL;
	}

		/* Fill URB using supplied data. */
	usb_fill_bulk_urb(urb, serial->dev,
		      usb_sndbulkpipe(serial->dev, endpoint) | dir,
		      buf, len, callback, ctx);

	return urb;
}

/* Setup urbs */
static void sierra_setup_urbs(struct usb_serial *serial)
{
	int i,j;
	struct usb_serial_port *port;
	struct sierra_port_private *portdata;

	dbg("%s", __FUNCTION__);

	for (i = 0; i < serial->num_ports; i++) {
		port = serial->port[i];
		portdata = usb_get_serial_port_data(port);

	/* Do indat endpoints first */
		for (j = 0; j < N_IN_URB; ++j) {
			portdata->in_urbs[j] = sierra_setup_urb (serial,
                  	port->bulk_in_endpointAddress, USB_DIR_IN, port,
                  	portdata->in_buffer[j], IN_BUFLEN, sierra_indat_callback);
		}

		/* outdat endpoints */
		for (j = 0; j < N_OUT_URB; ++j) {
			portdata->out_urbs[j] = sierra_setup_urb (serial,
                  	port->bulk_out_endpointAddress, USB_DIR_OUT, port,
                  	portdata->out_buffer[j], OUT_BUFLEN, sierra_outdat_callback);
		}
	}
}

static int sierra_startup(struct usb_serial *serial)
{
	int i, err;
	struct usb_serial_port *port;
	struct sierra_port_private *portdata;

	dbg("%s", __FUNCTION__);

	/* Now setup per port private data */
	for (i = 0; i < serial->num_ports; i++) {
		port = serial->port[i];
		portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
		if (!portdata) {
			dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
					__FUNCTION__, i);
			return (1);
		}

		usb_set_serial_port_data(port, portdata);

		if (! port->interrupt_in_urb)
			continue;
		err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
		if (err)
			dbg("%s: submit irq_in urb failed %d",
				__FUNCTION__, err);
	}

	sierra_setup_urbs(serial);

	return (0);
}

static void sierra_shutdown(struct usb_serial *serial)
{
	int i, j;
	struct usb_serial_port *port;
	struct sierra_port_private *portdata;

	dbg("%s", __FUNCTION__);

	/* Stop reading/writing urbs */
	for (i = 0; i < serial->num_ports; ++i) {
		port = serial->port[i];
		portdata = usb_get_serial_port_data(port);
		for (j = 0; j < N_IN_URB; j++)
			stop_urb(portdata->in_urbs[j]);
		for (j = 0; j < N_OUT_URB; j++)
			stop_urb(portdata->out_urbs[j]);
	}

	/* Now free them */
	for (i = 0; i < serial->num_ports; ++i) {
		port = serial->port[i];
		portdata = usb_get_serial_port_data(port);

		for (j = 0; j < N_IN_URB; j++) {
			if (portdata->in_urbs[j]) {
				usb_free_urb(portdata->in_urbs[j]);
				portdata->in_urbs[j] = NULL;
			}
		}
		for (j = 0; j < N_OUT_URB; j++) {
			if (portdata->out_urbs[j]) {
				usb_free_urb(portdata->out_urbs[j]);
				portdata->out_urbs[j] = NULL;
			}
		}
	}

	/* Now free per port private data */
	for (i = 0; i < serial->num_ports; i++) {
		port = serial->port[i];
		kfree(usb_get_serial_port_data(port));
	}
}

static struct usb_serial_driver sierra_1port_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"sierra1",
	},
	.description       = "Sierra USB modem (1 port)",
	.id_table          = id_table_1port,
	.num_interrupt_in  = NUM_DONT_CARE,
	.num_bulk_in       = 1,
	.num_bulk_out      = 1,
	.num_ports         = 1,
	.open              = sierra_open,
	.close             = sierra_close,
	.write             = sierra_write,
	.write_room        = sierra_write_room,
	.chars_in_buffer   = sierra_chars_in_buffer,
	.throttle          = sierra_rx_throttle,
	.unthrottle        = sierra_rx_unthrottle,
	.ioctl             = sierra_ioctl,
	.set_termios       = sierra_set_termios,
	.break_ctl         = sierra_break_ctl,
	.tiocmget          = sierra_tiocmget,
	.tiocmset          = sierra_tiocmset,
	.attach            = sierra_startup,
	.shutdown          = sierra_shutdown,
	.read_int_callback = sierra_instat_callback,
};

static struct usb_serial_driver sierra_3port_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"sierra3",
	},
	.description       = "Sierra USB modem (3 port)",
	.id_table          = id_table_3port,
	.num_interrupt_in  = NUM_DONT_CARE,
	.num_bulk_in       = 3,
	.num_bulk_out      = 3,
	.num_ports         = 3,
	.open              = sierra_open,
	.close             = sierra_close,
	.write             = sierra_write,
	.write_room        = sierra_write_room,
	.chars_in_buffer   = sierra_chars_in_buffer,
	.throttle          = sierra_rx_throttle,
	.unthrottle        = sierra_rx_unthrottle,
	.ioctl             = sierra_ioctl,
	.set_termios       = sierra_set_termios,
	.break_ctl         = sierra_break_ctl,
	.tiocmget          = sierra_tiocmget,
	.tiocmset          = sierra_tiocmset,
	.attach            = sierra_startup,
	.shutdown          = sierra_shutdown,
	.read_int_callback = sierra_instat_callback,
};

/* Functions used by new usb-serial code. */
static int __init sierra_init(void)
{
	int retval;
	retval = usb_serial_register(&sierra_1port_device);
	if (retval)
		goto failed_1port_device_register;
	retval = usb_serial_register(&sierra_3port_device);
	if (retval)
		goto failed_3port_device_register;


	retval = usb_register(&sierra_driver);
	if (retval)
		goto failed_driver_register;

	info(DRIVER_DESC ": " DRIVER_VERSION);

	return 0;

failed_driver_register:
	usb_serial_deregister(&sierra_3port_device);
failed_3port_device_register:
	usb_serial_deregister(&sierra_1port_device);
failed_1port_device_register:
	return retval;
}

static void __exit sierra_exit(void)
{
	usb_deregister (&sierra_driver);
	usb_serial_deregister(&sierra_1port_device);
	usb_serial_deregister(&sierra_3port_device);
}

module_init(sierra_init);
module_exit(sierra_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL");

#ifdef CONFIG_USB_DEBUG
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug messages");
#endif
Commit	Line	Data
69de51fd	1	/*
033a3fb9 KL	2	USB Driver for Sierra Wireless
	3
	4	Copyright (C) 2006 Kevin Lloyd <linux@sierrawireless.com>
	5
	6	IMPORTANT DISCLAIMER: This driver is not commercially supported by
	7	Sierra Wireless. Use at your own risk.
	8
	9	This driver is free software; you can redistribute it and/or modify
	10	it under the terms of Version 2 of the GNU General Public License as
	11	published by the Free Software Foundation.
	12
	13	Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
	14	Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
	15
	16	History:
	17	*/
	18
	19	#define DRIVER_VERSION "v.1.0.5"
	20	#define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
	21	#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
69de51fd KL	22
69de51fd KL	23	#include <linux/kernel.h>
033a3fb9 KL	24	#include <linux/jiffies.h>
033a3fb9 KL	25	#include <linux/errno.h>
69de51fd	26	#include <linux/tty.h>
033a3fb9	27	#include <linux/tty_flip.h>
69de51fd KL	28	#include <linux/module.h>
69de51fd KL	29	#include <linux/usb.h>
a969888c	30	#include <linux/usb/serial.h>
69de51fd	31
033a3fb9	32
69de51fd KL	33	static struct usb_device_id id_table [] = {
	34	{ USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
	35	{ USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
	36	{ USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
	37	{ USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
90ac3c81	38	{ USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
69de51fd KL	39	{ USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
69de51fd KL	40	{ USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
ab352c26	41	{ USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 for Europe */
69de51fd KL	42	{ USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
69de51fd KL	43	{ USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
033a3fb9 KL	44
	45	{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
	46	{ USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
	47	{ }
	48	};
964ee1de	49	MODULE_DEVICE_TABLE(usb, id_table);
033a3fb9 KL	50
	51	static struct usb_device_id id_table_1port [] = {
	52	{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
	53	{ USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
69de51fd KL	54	{ }
69de51fd KL	55	};
033a3fb9 KL	56
	57	static struct usb_device_id id_table_3port [] = {
	58	{ USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
	59	{ USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
	60	{ USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
	61	{ USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
90ac3c81	62	{ USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
033a3fb9 KL	63	{ USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
033a3fb9 KL	64	{ USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
baafe37c	65	{ USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 for Europe */
033a3fb9 KL	66	{ USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
	67	{ USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
	68	{ }
	69	};
	70
69de51fd	71	static struct usb_driver sierra_driver = {
033a3fb9 KL	72	.name = "sierra",
	73	.probe = usb_serial_probe,
	74	.disconnect = usb_serial_disconnect,
	75	.id_table = id_table,
964ee1de	76	.no_dynamic_id = 1,
033a3fb9 KL	77	};
	78
	79
033a3fb9	80	static int debug;
033a3fb9 KL	81
033a3fb9 KL	82	/* per port private data */
964ee1de GKH	83	#define N_IN_URB 4
	84	#define N_OUT_URB 1
	85	#define IN_BUFLEN 4096
	86	#define OUT_BUFLEN 128
033a3fb9 KL	87
	88	struct sierra_port_private {
	89	/* Input endpoints and buffer for this port */
	90	struct urb *in_urbs[N_IN_URB];
	91	char in_buffer[N_IN_URB][IN_BUFLEN];
	92	/* Output endpoints and buffer for this port */
	93	struct urb *out_urbs[N_OUT_URB];
	94	char out_buffer[N_OUT_URB][OUT_BUFLEN];
	95
	96	/* Settings for the port */
	97	int rts_state; /* Handshaking pins (outputs) */
	98	int dtr_state;
	99	int cts_state; /* Handshaking pins (inputs) */
	100	int dsr_state;
	101	int dcd_state;
	102	int ri_state;
	103
	104	unsigned long tx_start_time[N_OUT_URB];
	105	};
	106
964ee1de	107	static int sierra_send_setup(struct usb_serial_port *port)
69de51fd	108	{
964ee1de GKH	109	struct usb_serial *serial = port->serial;
964ee1de GKH	110	struct sierra_port_private *portdata;
033a3fb9	111
964ee1de	112	dbg("%s", __FUNCTION__);
033a3fb9	113
964ee1de	114	portdata = usb_get_serial_port_data(port);
033a3fb9	115
964ee1de GKH	116	if (port->tty) {
	117	int val = 0;
	118	if (portdata->dtr_state)
	119	val \|= 0x01;
	120	if (portdata->rts_state)
	121	val \|= 0x02;
033a3fb9	122
964ee1de GKH	123	return usb_control_msg(serial->dev,
	124	usb_rcvctrlpipe(serial->dev, 0),
	125	0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
	126	}
69de51fd	127
964ee1de	128	return 0;
69de51fd KL	129	}
69de51fd KL	130
033a3fb9 KL	131	static void sierra_rx_throttle(struct usb_serial_port *port)
	132	{
	133	dbg("%s", __FUNCTION__);
	134	}
	135
	136	static void sierra_rx_unthrottle(struct usb_serial_port *port)
	137	{
	138	dbg("%s", __FUNCTION__);
	139	}
	140
	141	static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
	142	{
	143	/* Unfortunately, I don't know how to send a break */
	144	dbg("%s", __FUNCTION__);
	145	}
	146
	147	static void sierra_set_termios(struct usb_serial_port *port,
606d099c	148	struct ktermios *old_termios)
033a3fb9 KL	149	{
	150	dbg("%s", __FUNCTION__);
	151
	152	sierra_send_setup(port);
	153	}
	154
	155	static int sierra_tiocmget(struct usb_serial_port port, struct file file)
	156	{
	157	unsigned int value;
	158	struct sierra_port_private *portdata;
	159
	160	portdata = usb_get_serial_port_data(port);
	161
	162	value = ((portdata->rts_state) ? TIOCM_RTS : 0) \|
	163	((portdata->dtr_state) ? TIOCM_DTR : 0) \|
	164	((portdata->cts_state) ? TIOCM_CTS : 0) \|
	165	((portdata->dsr_state) ? TIOCM_DSR : 0) \|
	166	((portdata->dcd_state) ? TIOCM_CAR : 0) \|
	167	((portdata->ri_state) ? TIOCM_RNG : 0);
	168
	169	return value;
	170	}
	171
	172	static int sierra_tiocmset(struct usb_serial_port port, struct file file,
	173	unsigned int set, unsigned int clear)
	174	{
	175	struct sierra_port_private *portdata;
	176
	177	portdata = usb_get_serial_port_data(port);
	178
	179	if (set & TIOCM_RTS)
	180	portdata->rts_state = 1;
	181	if (set & TIOCM_DTR)
	182	portdata->dtr_state = 1;
	183
	184	if (clear & TIOCM_RTS)
	185	portdata->rts_state = 0;
	186	if (clear & TIOCM_DTR)
	187	portdata->dtr_state = 0;
	188	return sierra_send_setup(port);
	189	}
	190
	191	static int sierra_ioctl(struct usb_serial_port port, struct file file,
	192	unsigned int cmd, unsigned long arg)
	193	{
	194	return -ENOIOCTLCMD;
	195	}
	196
	197	/* Write */
	198	static int sierra_write(struct usb_serial_port *port,
	199	const unsigned char *buf, int count)
	200	{
	201	struct sierra_port_private *portdata;
	202	int i;
	203	int left, todo;
	204	struct urb this_urb = NULL; / spurious */
	205	int err;
	206
	207	portdata = usb_get_serial_port_data(port);
	208
	209	dbg("%s: write (%d chars)", __FUNCTION__, count);
	210
	211	i = 0;
	212	left = count;
213	for (i=0; left > 0 && i < N_OUT_URB; i++) {
214	todo = left;
215	if (todo > OUT_BUFLEN)
216	todo = OUT_BUFLEN;
217
218	this_urb = portdata->out_urbs[i];
219	if (this_urb->status == -EINPROGRESS) {
220	if (time_before(jiffies,
221	portdata->tx_start_time[i] + 10 * HZ))
222	continue;
223	usb_unlink_urb(this_urb);
224	continue;
225	}
226	if (this_urb->status != 0)
227	dbg("usb_write %p failed (err=%d)",
228	this_urb, this_urb->status);
229
230	dbg("%s: endpoint %d buf %d", __FUNCTION__,
231	usb_pipeendpoint(this_urb->pipe), i);
232
233	/* send the data */
234	memcpy (this_urb->transfer_buffer, buf, todo);
235	this_urb->transfer_buffer_length = todo;
236
237	this_urb->dev = port->serial->dev;
238	err = usb_submit_urb(this_urb, GFP_ATOMIC);
239	if (err) {
240	dbg("usb_submit_urb %p (write bulk) failed "
241	"(%d, has %d)", this_urb,
242	err, this_urb->status);
243	continue;
244	}
245	portdata->tx_start_time[i] = jiffies;
246	buf += todo;
247	left -= todo;
248	}
249
250	count -= left;
251	dbg("%s: wrote (did %d)", __FUNCTION__, count);
252	return count;
253	}
254
255	static void sierra_indat_callback(struct urb *urb)
256	{
257	int err;
258	int endpoint;
259	struct usb_serial_port *port;
260	struct tty_struct *tty;
261	unsigned char *data = urb->transfer_buffer;
262
263	dbg("%s: %p", __FUNCTION__, urb);
264
265	endpoint = usb_pipeendpoint(urb->pipe);
266	port = (struct usb_serial_port *) urb->context;
267
268	if (urb->status) {
269	dbg("%s: nonzero status: %d on endpoint %02x.",
270	__FUNCTION__, urb->status, endpoint);
271	} else {
272	tty = port->tty;
273	if (urb->actual_length) {
274	tty_buffer_request_room(tty, urb->actual_length);
275	tty_insert_flip_string(tty, data, urb->actual_length);
276	tty_flip_buffer_push(tty);
277	} else {
278	dbg("%s: empty read urb received", __FUNCTION__);
279	}
280
281	/* Resubmit urb so we continue receiving */
282	if (port->open_count && urb->status != -ESHUTDOWN) {
283	err = usb_submit_urb(urb, GFP_ATOMIC);
284	if (err)
285	printk(KERN_ERR "%s: resubmit read urb failed. "
286	"(%d)", __FUNCTION__, err);
287	}
288	}
289	return;
290	}
291
292	static void sierra_outdat_callback(struct urb *urb)
293	{
294	struct usb_serial_port *port;
295
296	dbg("%s", __FUNCTION__);
297
298	port = (struct usb_serial_port *) urb->context;
299
300	usb_serial_port_softint(port);
301	}
302
303	static void sierra_instat_callback(struct urb *urb)
304	{
305	int err;
306	struct usb_serial_port port = (struct usb_serial_port ) urb->context;
307	struct sierra_port_private *portdata = usb_get_serial_port_data(port);
308	struct usb_serial *serial = port->serial;
309
310	dbg("%s", __FUNCTION__);
311	dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
312
313	if (urb->status == 0) {
314	struct usb_ctrlrequest *req_pkt =
315	(struct usb_ctrlrequest *)urb->transfer_buffer;
316
317	if (!req_pkt) {
318	dbg("%s: NULL req_pkt\n", __FUNCTION__);
319	return;
320	}
321	if ((req_pkt->bRequestType == 0xA1) &&
322	(req_pkt->bRequest == 0x20)) {
323	int old_dcd_state;
324	unsigned char signals = ((unsigned char )
325	urb->transfer_buffer +
326	sizeof(struct usb_ctrlrequest));
327
328	dbg("%s: signal x%x", __FUNCTION__, signals);
329
330	old_dcd_state = portdata->dcd_state;
331	portdata->cts_state = 1;
332	portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
333	portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
334	portdata->ri_state = ((signals & 0x08) ? 1 : 0);
335
336	if (port->tty && !C_CLOCAL(port->tty) &&
337	old_dcd_state && !portdata->dcd_state)
338	tty_hangup(port->tty);
339	} else {
340	dbg("%s: type %x req %x", __FUNCTION__,
341	req_pkt->bRequestType,req_pkt->bRequest);
342	}
343	} else
344	dbg("%s: error %d", __FUNCTION__, urb->status);
345
346	/* Resubmit urb so we continue receiving IRQ data */
347	if (urb->status != -ESHUTDOWN) {
348	urb->dev = serial->dev;
349	err = usb_submit_urb(urb, GFP_ATOMIC);
350	if (err)
351	dbg("%s: resubmit intr urb failed. (%d)",
352	__FUNCTION__, err);
353	}
354	}
355
356	static int sierra_write_room(struct usb_serial_port *port)
357	{
358	struct sierra_port_private *portdata;
359	int i;
360	int data_len = 0;
361	struct urb *this_urb;
362
363	portdata = usb_get_serial_port_data(port);
364
365	for (i=0; i < N_OUT_URB; i++) {
366	this_urb = portdata->out_urbs[i];
367	if (this_urb && this_urb->status != -EINPROGRESS)
368	data_len += OUT_BUFLEN;
369	}
370
371	dbg("%s: %d", __FUNCTION__, data_len);
372	return data_len;
373	}
374
375	static int sierra_chars_in_buffer(struct usb_serial_port *port)
376	{
377	struct sierra_port_private *portdata;
378	int i;
379	int data_len = 0;
380	struct urb *this_urb;
381
382	portdata = usb_get_serial_port_data(port);
383
384	for (i=0; i < N_OUT_URB; i++) {
385	this_urb = portdata->out_urbs[i];
386	if (this_urb && this_urb->status == -EINPROGRESS)
387	data_len += this_urb->transfer_buffer_length;
388	}
389	dbg("%s: %d", __FUNCTION__, data_len);
390	return data_len;
391	}
392
393	static int sierra_open(struct usb_serial_port port, struct file filp)
394	{
395	struct sierra_port_private *portdata;
396	struct usb_serial *serial = port->serial;
397	int i, err;
398	struct urb *urb;
399
400	portdata = usb_get_serial_port_data(port);
401
402	dbg("%s", __FUNCTION__);
403
404	/* Set some sane defaults */
405	portdata->rts_state = 1;
406	portdata->dtr_state = 1;
407
408	/* Reset low level data toggle and start reading from endpoints */
409	for (i = 0; i < N_IN_URB; i++) {
410	urb = portdata->in_urbs[i];
411	if (! urb)
412	continue;
413	if (urb->dev != serial->dev) {
414	dbg("%s: dev %p != %p", __FUNCTION__,
415	urb->dev, serial->dev);
416	continue;
417	}
418
419	/*
420	* make sure endpoint data toggle is synchronized with the
421	* device
422	*/
423	usb_clear_halt(urb->dev, urb->pipe);
424
425	err = usb_submit_urb(urb, GFP_KERNEL);
426	if (err) {
427	dbg("%s: submit urb %d failed (%d) %d",
428	__FUNCTION__, i, err,
429	urb->transfer_buffer_length);
430	}
431	}
432
433	/* Reset low level data toggle on out endpoints */
434	for (i = 0; i < N_OUT_URB; i++) {
435	urb = portdata->out_urbs[i];
436	if (! urb)
437	continue;
438	urb->dev = serial->dev;
439	/* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
440	usb_pipeout(urb->pipe), 0); */
441	}
442
443	port->tty->low_latency = 1;
444
445	sierra_send_setup(port);
446
447	return (0);
448	}
449
450	static inline void stop_urb(struct urb *urb)
451	{
452	if (urb && urb->status == -EINPROGRESS)
453	usb_kill_urb(urb);
454	}
455
456	static void sierra_close(struct usb_serial_port port, struct file filp)
457	{
458	int i;
459	struct usb_serial *serial = port->serial;
460	struct sierra_port_private *portdata;
461
462	dbg("%s", __FUNCTION__);
463	portdata = usb_get_serial_port_data(port);
464
465	portdata->rts_state = 0;
466	portdata->dtr_state = 0;
467
468	if (serial->dev) {
469	sierra_send_setup(port);
470
471	/* Stop reading/writing urbs */
472	for (i = 0; i < N_IN_URB; i++)
473	stop_urb(portdata->in_urbs[i]);
474	for (i = 0; i < N_OUT_URB; i++)
475	stop_urb(portdata->out_urbs[i]);
476	}
477	port->tty = NULL;
478	}
479
480	/* Helper functions used by sierra_setup_urbs */
481	static struct urb sierra_setup_urb(struct usb_serial serial, int endpoint,
964ee1de GKH	482	int dir, void ctx, char buf, int len,
964ee1de GKH	483	usb_complete_t callback)
033a3fb9 KL	484	{
	485	struct urb *urb;
	486
	487	if (endpoint == -1)
	488	return NULL; /* endpoint not needed */
	489
	490	urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
	491	if (urb == NULL) {
	492	dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
	493	return NULL;
	494	}
	495
	496	/* Fill URB using supplied data. */
	497	usb_fill_bulk_urb(urb, serial->dev,
	498	usb_sndbulkpipe(serial->dev, endpoint) \| dir,
	499	buf, len, callback, ctx);
	500
	501	return urb;
	502	}
	503
	504	/* Setup urbs */
	505	static void sierra_setup_urbs(struct usb_serial *serial)
	506	{
	507	int i,j;
	508	struct usb_serial_port *port;
	509	struct sierra_port_private *portdata;
	510
	511	dbg("%s", __FUNCTION__);
	512
	513	for (i = 0; i < serial->num_ports; i++) {
	514	port = serial->port[i];
	515	portdata = usb_get_serial_port_data(port);
	516
	517	/* Do indat endpoints first */
	518	for (j = 0; j < N_IN_URB; ++j) {
	519	portdata->in_urbs[j] = sierra_setup_urb (serial,
	520	port->bulk_in_endpointAddress, USB_DIR_IN, port,
	521	portdata->in_buffer[j], IN_BUFLEN, sierra_indat_callback);
	522	}
	523
	524	/* outdat endpoints */
	525	for (j = 0; j < N_OUT_URB; ++j) {
	526	portdata->out_urbs[j] = sierra_setup_urb (serial,
	527	port->bulk_out_endpointAddress, USB_DIR_OUT, port,
	528	portdata->out_buffer[j], OUT_BUFLEN, sierra_outdat_callback);
	529	}
	530	}
	531	}
	532
033a3fb9 KL	533	static int sierra_startup(struct usb_serial *serial)
	534	{
	535	int i, err;
	536	struct usb_serial_port *port;
	537	struct sierra_port_private *portdata;
	538
	539	dbg("%s", __FUNCTION__);
	540
	541	/* Now setup per port private data */
	542	for (i = 0; i < serial->num_ports; i++) {
	543	port = serial->port[i];
	544	portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
	545	if (!portdata) {
	546	dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
	547	__FUNCTION__, i);
	548	return (1);
	549	}
	550
	551	usb_set_serial_port_data(port, portdata);
	552
	553	if (! port->interrupt_in_urb)
	554	continue;
	555	err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
	556	if (err)
	557	dbg("%s: submit irq_in urb failed %d",
	558	__FUNCTION__, err);
	559	}
	560
	561	sierra_setup_urbs(serial);
	562
	563	return (0);
	564	}
	565
	566	static void sierra_shutdown(struct usb_serial *serial)
	567	{
	568	int i, j;
	569	struct usb_serial_port *port;
	570	struct sierra_port_private *portdata;
	571
	572	dbg("%s", __FUNCTION__);
	573
	574	/* Stop reading/writing urbs */
	575	for (i = 0; i < serial->num_ports; ++i) {
	576	port = serial->port[i];
	577	portdata = usb_get_serial_port_data(port);
	578	for (j = 0; j < N_IN_URB; j++)
	579	stop_urb(portdata->in_urbs[j]);
	580	for (j = 0; j < N_OUT_URB; j++)
	581	stop_urb(portdata->out_urbs[j]);
	582	}
	583
	584	/* Now free them */
	585	for (i = 0; i < serial->num_ports; ++i) {
	586	port = serial->port[i];
	587	portdata = usb_get_serial_port_data(port);
	588
	589	for (j = 0; j < N_IN_URB; j++) {
	590	if (portdata->in_urbs[j]) {
	591	usb_free_urb(portdata->in_urbs[j]);
	592	portdata->in_urbs[j] = NULL;
	593	}
	594	}
	595	for (j = 0; j < N_OUT_URB; j++) {
	596	if (portdata->out_urbs[j]) {
597	usb_free_urb(portdata->out_urbs[j]);
598	portdata->out_urbs[j] = NULL;
599	}
600	}
601	}
602
603	/* Now free per port private data */
604	for (i = 0; i < serial->num_ports; i++) {
605	port = serial->port[i];
606	kfree(usb_get_serial_port_data(port));
607	}
608	}
609
964ee1de GKH	610	static struct usb_serial_driver sierra_1port_device = {
	611	.driver = {
	612	.owner = THIS_MODULE,
	613	.name = "sierra1",
	614	},
	615	.description = "Sierra USB modem (1 port)",
	616	.id_table = id_table_1port,
	617	.num_interrupt_in = NUM_DONT_CARE,
	618	.num_bulk_in = 1,
	619	.num_bulk_out = 1,
	620	.num_ports = 1,
	621	.open = sierra_open,
	622	.close = sierra_close,
	623	.write = sierra_write,
	624	.write_room = sierra_write_room,
	625	.chars_in_buffer = sierra_chars_in_buffer,
	626	.throttle = sierra_rx_throttle,
	627	.unthrottle = sierra_rx_unthrottle,
	628	.ioctl = sierra_ioctl,
	629	.set_termios = sierra_set_termios,
	630	.break_ctl = sierra_break_ctl,
	631	.tiocmget = sierra_tiocmget,
	632	.tiocmset = sierra_tiocmset,
	633	.attach = sierra_startup,
	634	.shutdown = sierra_shutdown,
	635	.read_int_callback = sierra_instat_callback,
	636	};
	637
	638	static struct usb_serial_driver sierra_3port_device = {
	639	.driver = {
	640	.owner = THIS_MODULE,
	641	.name = "sierra3",
	642	},
	643	.description = "Sierra USB modem (3 port)",
	644	.id_table = id_table_3port,
	645	.num_interrupt_in = NUM_DONT_CARE,
	646	.num_bulk_in = 3,
	647	.num_bulk_out = 3,
	648	.num_ports = 3,
	649	.open = sierra_open,
	650	.close = sierra_close,
	651	.write = sierra_write,
	652	.write_room = sierra_write_room,
	653	.chars_in_buffer = sierra_chars_in_buffer,
	654	.throttle = sierra_rx_throttle,
	655	.unthrottle = sierra_rx_unthrottle,
	656	.ioctl = sierra_ioctl,
	657	.set_termios = sierra_set_termios,
	658	.break_ctl = sierra_break_ctl,
	659	.tiocmget = sierra_tiocmget,
	660	.tiocmset = sierra_tiocmset,
	661	.attach = sierra_startup,
	662	.shutdown = sierra_shutdown,
	663	.read_int_callback = sierra_instat_callback,
	664	};
	665
	666	/* Functions used by new usb-serial code. */
	667	static int __init sierra_init(void)
	668	{
	669	int retval;
	670	retval = usb_serial_register(&sierra_1port_device);
	671	if (retval)
	672	goto failed_1port_device_register;
	673	retval = usb_serial_register(&sierra_3port_device);
674	if (retval)
675	goto failed_3port_device_register;
676
677
678	retval = usb_register(&sierra_driver);
679	if (retval)
680	goto failed_driver_register;
681
682	info(DRIVER_DESC ": " DRIVER_VERSION);
683
684	return 0;
685
686	failed_driver_register:
687	usb_serial_deregister(&sierra_3port_device);
688	failed_3port_device_register:
689	usb_serial_deregister(&sierra_1port_device);
690	failed_1port_device_register:
691	return retval;
692	}
693
694	static void __exit sierra_exit(void)
695	{
696	usb_deregister (&sierra_driver);
697	usb_serial_deregister(&sierra_1port_device);
698	usb_serial_deregister(&sierra_3port_device);
699	}
700
701	module_init(sierra_init);
702	module_exit(sierra_exit);
703
033a3fb9 KL	704	MODULE_AUTHOR(DRIVER_AUTHOR);
	705	MODULE_DESCRIPTION(DRIVER_DESC);
	706	MODULE_VERSION(DRIVER_VERSION);
69de51fd	707	MODULE_LICENSE("GPL");
033a3fb9 KL	708
	709	#ifdef CONFIG_USB_DEBUG
	710	module_param(debug, bool, S_IRUGO \| S_IWUSR);
	711	MODULE_PARM_DESC(debug, "Debug messages");
	712	#endif
	713