[mirror_ubuntu-hirsute-kernel.git] / drivers / usb / serial / omninet.c

/*
 * USB ZyXEL omni.net LCD PLUS driver
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License version
 *	2 as published by the Free Software Foundation.
 *
 * See Documentation/usb/usb-serial.txt for more information on using this
 * driver
 *
 * Please report both successes and troubles to the author at omninet@kroah.com
 */

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

static bool debug;

/*
 * Version Information
 */
#define DRIVER_VERSION "v1.1"
#define DRIVER_AUTHOR "Alessandro Zummo"
#define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver"

#define ZYXEL_VENDOR_ID		0x0586
#define ZYXEL_OMNINET_ID	0x1000
/* This one seems to be a re-branded ZyXEL device */
#define BT_IGNITIONPRO_ID	0x2000

/* function prototypes */
static int  omninet_open(struct tty_struct *tty, struct usb_serial_port *port);
static void omninet_close(struct usb_serial_port *port);
static void omninet_read_bulk_callback(struct urb *urb);
static void omninet_write_bulk_callback(struct urb *urb);
static int  omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
				const unsigned char *buf, int count);
static int  omninet_write_room(struct tty_struct *tty);
static void omninet_disconnect(struct usb_serial *serial);
static void omninet_release(struct usb_serial *serial);
static int omninet_attach(struct usb_serial *serial);

static const struct usb_device_id id_table[] = {
	{ USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
	{ USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
	{ }						/* Terminating entry */
};

MODULE_DEVICE_TABLE(usb, id_table);

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


static struct usb_serial_driver zyxel_omninet_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"omninet",
	},
	.description =		"ZyXEL - omni.net lcd plus usb",
	.usb_driver =		&omninet_driver,
	.id_table =		id_table,
	.num_ports =		1,
	.attach =		omninet_attach,
	.open =			omninet_open,
	.close =		omninet_close,
	.write =		omninet_write,
	.write_room =		omninet_write_room,
	.read_bulk_callback =	omninet_read_bulk_callback,
	.write_bulk_callback =	omninet_write_bulk_callback,
	.disconnect =		omninet_disconnect,
	.release =		omninet_release,
};


/* The protocol.
 *
 * The omni.net always exchange 64 bytes of data with the host. The first
 * four bytes are the control header, you can see it in the above structure.
 *
 * oh_seq is a sequence number. Don't know if/how it's used.
 * oh_len is the length of the data bytes in the packet.
 * oh_xxx Bit-mapped, related to handshaking and status info.
 *	I normally set it to 0x03 in trasmitted frames.
 *	7: Active when the TA is in a CONNECTed state.
 *	6: unknown
 *	5: handshaking, unknown
 *	4: handshaking, unknown
 *	3: unknown, usually 0
 *	2: unknown, usually 0
 *	1: handshaking, unknown, usually set to 1 in trasmitted frames
 *	0: handshaking, unknown, usually set to 1 in trasmitted frames
 * oh_pad Probably a pad byte.
 *
 * After the header you will find data bytes if oh_len was greater than zero.
 *
 */

struct omninet_header {
	__u8	oh_seq;
	__u8	oh_len;
	__u8	oh_xxx;
	__u8	oh_pad;
};

struct omninet_data {
	__u8	od_outseq;	/* Sequence number for bulk_out URBs */
};

static int omninet_attach(struct usb_serial *serial)
{
	struct omninet_data *od;
	struct usb_serial_port *port = serial->port[0];

	od = kmalloc(sizeof(struct omninet_data), GFP_KERNEL);
	if (!od) {
		dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n",
			__func__, sizeof(struct omninet_data));
		return -ENOMEM;
	}
	usb_set_serial_port_data(port, od);
	return 0;
}

static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port)
{
	struct usb_serial	*serial = port->serial;
	struct usb_serial_port	*wport;
	int			result = 0;

	dbg("%s - port %d", __func__, port->number);

	wport = serial->port[1];
	tty_port_tty_set(&wport->port, tty);

	/* Start reading from the device */
	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
	if (result)
		dev_err(&port->dev,
			"%s - failed submitting read urb, error %d\n",
			__func__, result);
	return result;
}

static void omninet_close(struct usb_serial_port *port)
{
	dbg("%s - port %d", __func__, port->number);
	usb_kill_urb(port->read_urb);
}


#define OMNINET_DATAOFFSET	0x04
#define OMNINET_HEADERLEN	sizeof(struct omninet_header)
#define OMNINET_BULKOUTSIZE 	(64 - OMNINET_HEADERLEN)

static void omninet_read_bulk_callback(struct urb *urb)
{
	struct usb_serial_port 	*port 	= urb->context;
	unsigned char 		*data 	= urb->transfer_buffer;
	struct omninet_header 	*header = (struct omninet_header *) &data[0];
	int status = urb->status;
	int result;
	int i;

	dbg("%s - port %d", __func__, port->number);

	if (status) {
		dbg("%s - nonzero read bulk status received: %d",
		    __func__, status);
		return;
	}

	if (debug && header->oh_xxx != 0x30) {
		if (urb->actual_length) {
			printk(KERN_DEBUG "%s: omninet_read %d: ",
			       __FILE__, header->oh_len);
			for (i = 0; i < (header->oh_len +
						OMNINET_HEADERLEN); i++)
				printk("%.2x ", data[i]);
			printk("\n");
		}
	}

	if (urb->actual_length && header->oh_len) {
		struct tty_struct *tty = tty_port_tty_get(&port->port);
		tty_insert_flip_string(tty, data + OMNINET_DATAOFFSET,
							header->oh_len);
		tty_flip_buffer_push(tty);
		tty_kref_put(tty);
	}

	/* Continue trying to always read  */
	result = usb_submit_urb(urb, GFP_ATOMIC);
	if (result)
		dev_err(&port->dev,
			"%s - failed resubmitting read urb, error %d\n",
			__func__, result);
}

static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
					const unsigned char *buf, int count)
{
	struct usb_serial *serial = port->serial;
	struct usb_serial_port *wport = serial->port[1];

	struct omninet_data *od = usb_get_serial_port_data(port);
	struct omninet_header *header = (struct omninet_header *)
					wport->write_urb->transfer_buffer;

	int			result;

	dbg("%s - port %d", __func__, port->number);

	if (count == 0) {
		dbg("%s - write request of 0 bytes", __func__);
		return 0;
	}

	if (!test_and_clear_bit(0, &port->write_urbs_free)) {
		dbg("%s - already writing", __func__);
		return 0;
	}

	count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count;

	memcpy(wport->write_urb->transfer_buffer + OMNINET_DATAOFFSET,
								buf, count);

	usb_serial_debug_data(debug, &port->dev, __func__, count,
					wport->write_urb->transfer_buffer);

	header->oh_seq 	= od->od_outseq++;
	header->oh_len 	= count;
	header->oh_xxx  = 0x03;
	header->oh_pad 	= 0x00;

	/* send the data out the bulk port, always 64 bytes */
	wport->write_urb->transfer_buffer_length = 64;

	result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
	if (result) {
		set_bit(0, &wport->write_urbs_free);
		dev_err(&port->dev,
			"%s - failed submitting write urb, error %d\n",
			__func__, result);
	} else
		result = count;

	return result;
}


static int omninet_write_room(struct tty_struct *tty)
{
	struct usb_serial_port *port = tty->driver_data;
	struct usb_serial 	*serial = port->serial;
	struct usb_serial_port 	*wport 	= serial->port[1];

	int room = 0; /* Default: no room */

	if (test_bit(0, &wport->write_urbs_free))
		room = wport->bulk_out_size - OMNINET_HEADERLEN;

	dbg("%s - returns %d", __func__, room);

	return room;
}

static void omninet_write_bulk_callback(struct urb *urb)
{
/*	struct omninet_header	*header = (struct omninet_header  *)
						urb->transfer_buffer; */
	struct usb_serial_port 	*port   =  urb->context;
	int status = urb->status;

	dbg("%s - port %0x", __func__, port->number);

	set_bit(0, &port->write_urbs_free);
	if (status) {
		dbg("%s - nonzero write bulk status received: %d",
		    __func__, status);
		return;
	}

	usb_serial_port_softint(port);
}


static void omninet_disconnect(struct usb_serial *serial)
{
	struct usb_serial_port *wport = serial->port[1];

	dbg("%s", __func__);

	usb_kill_urb(wport->write_urb);
}


static void omninet_release(struct usb_serial *serial)
{
	struct usb_serial_port *port = serial->port[0];

	dbg("%s", __func__);

	kfree(usb_get_serial_port_data(port));
}


static int __init omninet_init(void)
{
	int retval;
	retval = usb_serial_register(&zyxel_omninet_device);
	if (retval)
		goto failed_usb_serial_register;
	retval = usb_register(&omninet_driver);
	if (retval)
		goto failed_usb_register;
	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
	       DRIVER_DESC "\n");
	return 0;
failed_usb_register:
	usb_serial_deregister(&zyxel_omninet_device);
failed_usb_serial_register:
	return retval;
}


static void __exit omninet_exit(void)
{
	usb_deregister(&omninet_driver);
	usb_serial_deregister(&zyxel_omninet_device);
}


module_init(omninet_init);
module_exit(omninet_exit);

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

module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* USB ZyXEL omni.net LCD PLUS driver
	3	*
4d0dce3e GKH	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License version
	6	* 2 as published by the Free Software Foundation.
1da177e4	7	*
f89d0dff AC	8	* See Documentation/usb/usb-serial.txt for more information on using this
f89d0dff AC	9	* driver
1da177e4 LT	10	*
1da177e4 LT	11	* Please report both successes and troubles to the author at omninet@kroah.com
1da177e4 LT	12	*/
1da177e4 LT	13
1da177e4 LT	14	#include <linux/kernel.h>
	15	#include <linux/errno.h>
	16	#include <linux/init.h>
	17	#include <linux/slab.h>
	18	#include <linux/tty.h>
	19	#include <linux/tty_driver.h>
	20	#include <linux/tty_flip.h>
	21	#include <linux/module.h>
f89d0dff	22	#include <linux/uaccess.h>
1da177e4	23	#include <linux/usb.h>
a969888c	24	#include <linux/usb/serial.h>
1da177e4	25
90ab5ee9	26	static bool debug;
1da177e4 LT	27
	28	/*
	29	* Version Information
	30	*/
	31	#define DRIVER_VERSION "v1.1"
	32	#define DRIVER_AUTHOR "Alessandro Zummo"
	33	#define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver"
	34
	35	#define ZYXEL_VENDOR_ID 0x0586
	36	#define ZYXEL_OMNINET_ID 0x1000
f89d0dff AC	37	/* This one seems to be a re-branded ZyXEL device */
f89d0dff AC	38	#define BT_IGNITIONPRO_ID 0x2000
1da177e4 LT	39
1da177e4 LT	40	/* function prototypes */
a509a7e4	41	static int omninet_open(struct tty_struct tty, struct usb_serial_port port);
335f8514	42	static void omninet_close(struct usb_serial_port *port);
f89d0dff AC	43	static void omninet_read_bulk_callback(struct urb *urb);
	44	static void omninet_write_bulk_callback(struct urb *urb);
	45	static int omninet_write(struct tty_struct tty, struct usb_serial_port port,
	46	const unsigned char *buf, int count);
	47	static int omninet_write_room(struct tty_struct *tty);
f9c99bb8 AS	48	static void omninet_disconnect(struct usb_serial *serial);
f9c99bb8 AS	49	static void omninet_release(struct usb_serial *serial);
f89d0dff AC	50	static int omninet_attach(struct usb_serial *serial);
f89d0dff AC	51
7d40d7e8	52	static const struct usb_device_id id_table[] = {
1da177e4 LT	53	{ USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
	54	{ USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
	55	{ } /* Terminating entry */
	56	};
	57
f89d0dff	58	MODULE_DEVICE_TABLE(usb, id_table);
1da177e4 LT	59
1da177e4 LT	60	static struct usb_driver omninet_driver = {
1da177e4 LT	61	.name = "omninet",
	62	.probe = usb_serial_probe,
	63	.disconnect = usb_serial_disconnect,
	64	.id_table = id_table,
ba9dc657	65	.no_dynamic_id = 1,
1da177e4 LT	66	};
	67
	68
ea65370d	69	static struct usb_serial_driver zyxel_omninet_device = {
18fcac35 GKH	70	.driver = {
18fcac35 GKH	71	.owner = THIS_MODULE,
269bda1c	72	.name = "omninet",
18fcac35	73	},
269bda1c	74	.description = "ZyXEL - omni.net lcd plus usb",
d9b1b787	75	.usb_driver = &omninet_driver,
1da177e4	76	.id_table = id_table,
1da177e4	77	.num_ports = 1,
5ec1862e	78	.attach = omninet_attach,
1da177e4 LT	79	.open = omninet_open,
	80	.close = omninet_close,
	81	.write = omninet_write,
	82	.write_room = omninet_write_room,
	83	.read_bulk_callback = omninet_read_bulk_callback,
	84	.write_bulk_callback = omninet_write_bulk_callback,
f9c99bb8 AS	85	.disconnect = omninet_disconnect,
f9c99bb8 AS	86	.release = omninet_release,
1da177e4 LT	87	};
	88
	89
	90	/* The protocol.
	91	*
	92	* The omni.net always exchange 64 bytes of data with the host. The first
	93	* four bytes are the control header, you can see it in the above structure.
	94	*
	95	* oh_seq is a sequence number. Don't know if/how it's used.
	96	* oh_len is the length of the data bytes in the packet.
	97	* oh_xxx Bit-mapped, related to handshaking and status info.
	98	* I normally set it to 0x03 in trasmitted frames.
	99	* 7: Active when the TA is in a CONNECTed state.
	100	* 6: unknown
	101	* 5: handshaking, unknown
	102	* 4: handshaking, unknown
	103	* 3: unknown, usually 0
	104	* 2: unknown, usually 0
	105	* 1: handshaking, unknown, usually set to 1 in trasmitted frames
	106	* 0: handshaking, unknown, usually set to 1 in trasmitted frames
	107	* oh_pad Probably a pad byte.
	108	*
	109	* After the header you will find data bytes if oh_len was greater than zero.
	110	*
	111	*/
	112
f89d0dff	113	struct omninet_header {
1da177e4 LT	114	__u8 oh_seq;
	115	__u8 oh_len;
	116	__u8 oh_xxx;
	117	__u8 oh_pad;
	118	};
	119
f89d0dff AC	120	struct omninet_data {
f89d0dff AC	121	__u8 od_outseq; /* Sequence number for bulk_out URBs */
1da177e4 LT	122	};
1da177e4 LT	123
f89d0dff	124	static int omninet_attach(struct usb_serial *serial)
5ec1862e ON	125	{
	126	struct omninet_data *od;
	127	struct usb_serial_port *port = serial->port[0];
	128
f89d0dff AC	129	od = kmalloc(sizeof(struct omninet_data), GFP_KERNEL);
f89d0dff AC	130	if (!od) {
194343d9 GKH	131	dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n",
194343d9 GKH	132	__func__, sizeof(struct omninet_data));
5ec1862e ON	133	return -ENOMEM;
	134	}
	135	usb_set_serial_port_data(port, od);
	136	return 0;
	137	}
	138
a509a7e4	139	static int omninet_open(struct tty_struct tty, struct usb_serial_port port)
1da177e4 LT	140	{
	141	struct usb_serial *serial = port->serial;
	142	struct usb_serial_port *wport;
1da177e4 LT	143	int result = 0;
1da177e4 LT	144
441b62c1	145	dbg("%s - port %d", __func__, port->number);
1da177e4	146
1da177e4	147	wport = serial->port[1];
4a90f09b	148	tty_port_tty_set(&wport->port, tty);
1da177e4 LT	149
1da177e4 LT	150	/* Start reading from the device */
1da177e4	151	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
f89d0dff	152	if (result)
194343d9 GKH	153	dev_err(&port->dev,
	154	"%s - failed submitting read urb, error %d\n",
	155	__func__, result);
1da177e4 LT	156	return result;
	157	}
	158
335f8514	159	static void omninet_close(struct usb_serial_port *port)
1da177e4	160	{
441b62c1	161	dbg("%s - port %d", __func__, port->number);
1da177e4	162	usb_kill_urb(port->read_urb);
1da177e4 LT	163	}
	164
	165
	166	#define OMNINET_DATAOFFSET 0x04
	167	#define OMNINET_HEADERLEN sizeof(struct omninet_header)
	168	#define OMNINET_BULKOUTSIZE (64 - OMNINET_HEADERLEN)
	169
f89d0dff	170	static void omninet_read_bulk_callback(struct urb *urb)
1da177e4	171	{
cdc97792	172	struct usb_serial_port *port = urb->context;
1da177e4 LT	173	unsigned char *data = urb->transfer_buffer;
1da177e4 LT	174	struct omninet_header header = (struct omninet_header ) &data[0];
fdc2deb3	175	int status = urb->status;
1da177e4	176	int result;
4944d400	177	int i;
1da177e4	178
441b62c1	179	dbg("%s - port %d", __func__, port->number);
1da177e4	180
fdc2deb3 GKH	181	if (status) {
fdc2deb3 GKH	182	dbg("%s - nonzero read bulk status received: %d",
441b62c1	183	__func__, status);
1da177e4 LT	184	return;
	185	}
	186
f89d0dff	187	if (debug && header->oh_xxx != 0x30) {
1da177e4	188	if (urb->actual_length) {
f45ba776 JP	189	printk(KERN_DEBUG "%s: omninet_read %d: ",
f45ba776 JP	190	__FILE__, header->oh_len);
f89d0dff AC	191	for (i = 0; i < (header->oh_len +
	192	OMNINET_HEADERLEN); i++)
	193	printk("%.2x ", data[i]);
	194	printk("\n");
1da177e4 LT	195	}
	196	}
	197
	198	if (urb->actual_length && header->oh_len) {
4a90f09b AC	199	struct tty_struct *tty = tty_port_tty_get(&port->port);
	200	tty_insert_flip_string(tty, data + OMNINET_DATAOFFSET,
	201	header->oh_len);
	202	tty_flip_buffer_push(tty);
	203	tty_kref_put(tty);
1da177e4 LT	204	}
	205
	206	/* Continue trying to always read */
1da177e4 LT	207	result = usb_submit_urb(urb, GFP_ATOMIC);
1da177e4 LT	208	if (result)
194343d9 GKH	209	dev_err(&port->dev,
	210	"%s - failed resubmitting read urb, error %d\n",
	211	__func__, result);
1da177e4 LT	212	}
1da177e4 LT	213
95da310e AC	214	static int omninet_write(struct tty_struct tty, struct usb_serial_port port,
95da310e AC	215	const unsigned char *buf, int count)
1da177e4	216	{
f89d0dff AC	217	struct usb_serial *serial = port->serial;
f89d0dff AC	218	struct usb_serial_port *wport = serial->port[1];
1da177e4	219
f89d0dff AC	220	struct omninet_data *od = usb_get_serial_port_data(port);
	221	struct omninet_header header = (struct omninet_header )
	222	wport->write_urb->transfer_buffer;
1da177e4 LT	223
	224	int result;
	225
441b62c1	226	dbg("%s - port %d", __func__, port->number);
1da177e4 LT	227
1da177e4 LT	228	if (count == 0) {
441b62c1	229	dbg("%s - write request of 0 bytes", __func__);
f89d0dff	230	return 0;
1da177e4	231	}
507ca9bc	232
120f9dbc	233	if (!test_and_clear_bit(0, &port->write_urbs_free)) {
441b62c1	234	dbg("%s - already writing", __func__);
507ca9bc	235	return 0;
1da177e4 LT	236	}
	237
	238	count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count;
	239
f89d0dff AC	240	memcpy(wport->write_urb->transfer_buffer + OMNINET_DATAOFFSET,
f89d0dff AC	241	buf, count);
1da177e4	242
f89d0dff AC	243	usb_serial_debug_data(debug, &port->dev, __func__, count,
f89d0dff AC	244	wport->write_urb->transfer_buffer);
1da177e4 LT	245
	246	header->oh_seq = od->od_outseq++;
	247	header->oh_len = count;
	248	header->oh_xxx = 0x03;
	249	header->oh_pad = 0x00;
	250
	251	/* send the data out the bulk port, always 64 bytes */
	252	wport->write_urb->transfer_buffer_length = 64;
	253
1da177e4	254	result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
507ca9bc	255	if (result) {
120f9dbc	256	set_bit(0, &wport->write_urbs_free);
194343d9 GKH	257	dev_err(&port->dev,
	258	"%s - failed submitting write urb, error %d\n",
	259	__func__, result);
507ca9bc	260	} else
1da177e4 LT	261	result = count;
	262
	263	return result;
	264	}
	265
	266
f89d0dff	267	static int omninet_write_room(struct tty_struct *tty)
1da177e4	268	{
95da310e	269	struct usb_serial_port *port = tty->driver_data;
1da177e4 LT	270	struct usb_serial *serial = port->serial;
	271	struct usb_serial_port *wport = serial->port[1];
	272
a5b6f60c	273	int room = 0; /* Default: no room */
1da177e4	274
120f9dbc	275	if (test_bit(0, &wport->write_urbs_free))
1da177e4 LT	276	room = wport->bulk_out_size - OMNINET_HEADERLEN;
1da177e4 LT	277
441b62c1	278	dbg("%s - returns %d", __func__, room);
1da177e4	279
f89d0dff	280	return room;
1da177e4 LT	281	}
1da177e4 LT	282
f89d0dff	283	static void omninet_write_bulk_callback(struct urb *urb)
1da177e4	284	{
f89d0dff AC	285	/* struct omninet_header header = (struct omninet_header )
f89d0dff AC	286	urb->transfer_buffer; */
cdc97792	287	struct usb_serial_port *port = urb->context;
fdc2deb3	288	int status = urb->status;
1da177e4	289
759f3634	290	dbg("%s - port %0x", __func__, port->number);
1da177e4	291
120f9dbc	292	set_bit(0, &port->write_urbs_free);
fdc2deb3 GKH	293	if (status) {
fdc2deb3 GKH	294	dbg("%s - nonzero write bulk status received: %d",
441b62c1	295	__func__, status);
1da177e4 LT	296	return;
	297	}
	298
cf2c7481	299	usb_serial_port_softint(port);
1da177e4 LT	300	}
	301
	302
f9c99bb8	303	static void omninet_disconnect(struct usb_serial *serial)
1da177e4	304	{
5ec1862e	305	struct usb_serial_port *wport = serial->port[1];
f9c99bb8	306
f89d0dff	307	dbg("%s", __func__);
5ec1862e ON	308
5ec1862e ON	309	usb_kill_urb(wport->write_urb);
f9c99bb8 AS	310	}
	311
	312
	313	static void omninet_release(struct usb_serial *serial)
	314	{
	315	struct usb_serial_port *port = serial->port[0];
	316
	317	dbg("%s", __func__);
	318
5ec1862e	319	kfree(usb_get_serial_port_data(port));
1da177e4 LT	320	}
	321
	322
f89d0dff	323	static int __init omninet_init(void)
1da177e4 LT	324	{
	325	int retval;
	326	retval = usb_serial_register(&zyxel_omninet_device);
	327	if (retval)
	328	goto failed_usb_serial_register;
	329	retval = usb_register(&omninet_driver);
	330	if (retval)
	331	goto failed_usb_register;
c197a8db GKH	332	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
c197a8db GKH	333	DRIVER_DESC "\n");
1da177e4 LT	334	return 0;
	335	failed_usb_register:
	336	usb_serial_deregister(&zyxel_omninet_device);
	337	failed_usb_serial_register:
	338	return retval;
	339	}
	340
	341
f89d0dff	342	static void __exit omninet_exit(void)
1da177e4	343	{
f89d0dff AC	344	usb_deregister(&omninet_driver);
f89d0dff AC	345	usb_serial_deregister(&zyxel_omninet_device);
1da177e4 LT	346	}
	347
	348
	349	module_init(omninet_init);
	350	module_exit(omninet_exit);
	351
f89d0dff AC	352	MODULE_AUTHOR(DRIVER_AUTHOR);
f89d0dff AC	353	MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4 LT	354	MODULE_LICENSE("GPL");
	355
	356	module_param(debug, bool, S_IRUGO \| S_IWUSR);
	357	MODULE_PARM_DESC(debug, "Debug enabled or not");