[mirror_ubuntu-bionic-kernel.git] / drivers / usb / serial / f81232.c

/*
 * Fintek F81232 USB to serial adaptor driver
 *
 * Copyright (C) 2012 Greg Kroah-Hartman (gregkh@linuxfoundation.org)
 * Copyright (C) 2012 Linux Foundation
 *
 * 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.
 *
 */

#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/serial.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>

static bool debug;

static const struct usb_device_id id_table[] = {
	{ USB_DEVICE(0x1934, 0x0706) },
	{ }					/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);

#define CONTROL_DTR			0x01
#define CONTROL_RTS			0x02

#define UART_STATE			0x08
#define UART_STATE_TRANSIENT_MASK	0x74
#define UART_DCD			0x01
#define UART_DSR			0x02
#define UART_BREAK_ERROR		0x04
#define UART_RING			0x08
#define UART_FRAME_ERROR		0x10
#define UART_PARITY_ERROR		0x20
#define UART_OVERRUN_ERROR		0x40
#define UART_CTS			0x80

struct f81232_private {
	spinlock_t lock;
	wait_queue_head_t delta_msr_wait;
	u8 line_control;
	u8 line_status;
};

static void f81232_update_line_status(struct usb_serial_port *port,
				      unsigned char *data,
				      unsigned int actual_length)
{
}

static void f81232_read_int_callback(struct urb *urb)
{
	struct usb_serial_port *port =  urb->context;
	unsigned char *data = urb->transfer_buffer;
	unsigned int actual_length = urb->actual_length;
	int status = urb->status;
	int retval;

	switch (status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
			__func__, status);
		return;
	default:
		dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
			__func__, status);
		goto exit;
	}

	usb_serial_debug_data(debug, &port->dev, __func__,
			      urb->actual_length, urb->transfer_buffer);

	f81232_update_line_status(port, data, actual_length);

exit:
	retval = usb_submit_urb(urb, GFP_ATOMIC);
	if (retval)
		dev_err(&urb->dev->dev,
			"%s - usb_submit_urb failed with result %d\n",
			__func__, retval);
}

static void f81232_process_read_urb(struct urb *urb)
{
	struct usb_serial_port *port = urb->context;
	struct f81232_private *priv = usb_get_serial_port_data(port);
	struct tty_struct *tty;
	unsigned char *data = urb->transfer_buffer;
	char tty_flag = TTY_NORMAL;
	unsigned long flags;
	u8 line_status;
	int i;

	/* update line status */
	spin_lock_irqsave(&priv->lock, flags);
	line_status = priv->line_status;
	priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
	spin_unlock_irqrestore(&priv->lock, flags);
	wake_up_interruptible(&priv->delta_msr_wait);

	if (!urb->actual_length)
		return;

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

	/* break takes precedence over parity, */
	/* which takes precedence over framing errors */
	if (line_status & UART_BREAK_ERROR)
		tty_flag = TTY_BREAK;
	else if (line_status & UART_PARITY_ERROR)
		tty_flag = TTY_PARITY;
	else if (line_status & UART_FRAME_ERROR)
		tty_flag = TTY_FRAME;
	dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag);

	/* overrun is special, not associated with a char */
	if (line_status & UART_OVERRUN_ERROR)
		tty_insert_flip_char(tty, 0, TTY_OVERRUN);

	if (port->port.console && port->sysrq) {
		for (i = 0; i < urb->actual_length; ++i)
			if (!usb_serial_handle_sysrq_char(port, data[i]))
				tty_insert_flip_char(tty, data[i], tty_flag);
	} else {
		tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
							urb->actual_length);
	}

	tty_flip_buffer_push(tty);
	tty_kref_put(tty);
}

static int set_control_lines(struct usb_device *dev, u8 value)
{
	/* FIXME - Stubbed out for now */
	return 0;
}

static void f81232_break_ctl(struct tty_struct *tty, int break_state)
{
	/* FIXME - Stubbed out for now */

	/*
	 * break_state = -1 to turn on break, and 0 to turn off break
	 * see drivers/char/tty_io.c to see it used.
	 * last_set_data_urb_value NEVER has the break bit set in it.
	 */
}

static void f81232_set_termios(struct tty_struct *tty,
		struct usb_serial_port *port, struct ktermios *old_termios)
{
	/* FIXME - Stubbed out for now */

	/* Don't change anything if nothing has changed */
	if (!tty_termios_hw_change(tty->termios, old_termios))
		return;

	/* Do the real work here... */
}

static int f81232_tiocmget(struct tty_struct *tty)
{
	/* FIXME - Stubbed out for now */
	return 0;
}

static int f81232_tiocmset(struct tty_struct *tty,
			unsigned int set, unsigned int clear)
{
	/* FIXME - Stubbed out for now */
	return 0;
}

static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
{
	struct ktermios tmp_termios;
	int result;

	/* Setup termios */
	if (tty)
		f81232_set_termios(tty, port, &tmp_termios);

	result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
	if (result) {
		dev_err(&port->dev, "%s - failed submitting interrupt urb,"
			" error %d\n", __func__, result);
		return result;
	}

	result = usb_serial_generic_open(tty, port);
	if (result) {
		usb_kill_urb(port->interrupt_in_urb);
		return result;
	}

	port->port.drain_delay = 256;
	return 0;
}

static void f81232_close(struct usb_serial_port *port)
{
	usb_serial_generic_close(port);
	usb_kill_urb(port->interrupt_in_urb);
}

static void f81232_dtr_rts(struct usb_serial_port *port, int on)
{
	struct f81232_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	u8 control;

	spin_lock_irqsave(&priv->lock, flags);
	/* Change DTR and RTS */
	if (on)
		priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
	else
		priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
	control = priv->line_control;
	spin_unlock_irqrestore(&priv->lock, flags);
	set_control_lines(port->serial->dev, control);
}

static int f81232_carrier_raised(struct usb_serial_port *port)
{
	struct f81232_private *priv = usb_get_serial_port_data(port);
	if (priv->line_status & UART_DCD)
		return 1;
	return 0;
}

static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
{
	struct f81232_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	unsigned int prevstatus;
	unsigned int status;
	unsigned int changed;

	spin_lock_irqsave(&priv->lock, flags);
	prevstatus = priv->line_status;
	spin_unlock_irqrestore(&priv->lock, flags);

	while (1) {
		interruptible_sleep_on(&priv->delta_msr_wait);
		/* see if a signal did it */
		if (signal_pending(current))
			return -ERESTARTSYS;

		spin_lock_irqsave(&priv->lock, flags);
		status = priv->line_status;
		spin_unlock_irqrestore(&priv->lock, flags);

		changed = prevstatus ^ status;

		if (((arg & TIOCM_RNG) && (changed & UART_RING)) ||
		    ((arg & TIOCM_DSR) && (changed & UART_DSR)) ||
		    ((arg & TIOCM_CD)  && (changed & UART_DCD)) ||
		    ((arg & TIOCM_CTS) && (changed & UART_CTS))) {
			return 0;
		}
		prevstatus = status;
	}
	/* NOTREACHED */
	return 0;
}

static int f81232_ioctl(struct tty_struct *tty,
			unsigned int cmd, unsigned long arg)
{
	struct serial_struct ser;
	struct usb_serial_port *port = tty->driver_data;

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

	switch (cmd) {
	case TIOCGSERIAL:
		memset(&ser, 0, sizeof ser);
		ser.type = PORT_16654;
		ser.line = port->serial->minor;
		ser.port = port->number;
		ser.baud_base = 460800;

		if (copy_to_user((void __user *)arg, &ser, sizeof ser))
			return -EFAULT;

		return 0;

	case TIOCMIWAIT:
		dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,
			port->number);
		return wait_modem_info(port, arg);
	default:
		dev_dbg(&port->dev, "%s not supported = 0x%04x\n",
			__func__, cmd);
		break;
	}
	return -ENOIOCTLCMD;
}

static int f81232_startup(struct usb_serial *serial)
{
	struct f81232_private *priv;
	int i;

	for (i = 0; i < serial->num_ports; ++i) {
		priv = kzalloc(sizeof(struct f81232_private), GFP_KERNEL);
		if (!priv)
			goto cleanup;
		spin_lock_init(&priv->lock);
		init_waitqueue_head(&priv->delta_msr_wait);
		usb_set_serial_port_data(serial->port[i], priv);
	}
	return 0;

cleanup:
	for (--i; i >= 0; --i) {
		priv = usb_get_serial_port_data(serial->port[i]);
		kfree(priv);
		usb_set_serial_port_data(serial->port[i], NULL);
	}
	return -ENOMEM;
}

static void f81232_release(struct usb_serial *serial)
{
	int i;
	struct f81232_private *priv;

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

static struct usb_serial_driver f81232_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"f81232",
	},
	.id_table =		id_table,
	.num_ports =		1,
	.bulk_in_size =		256,
	.bulk_out_size =	256,
	.open =			f81232_open,
	.close =		f81232_close,
	.dtr_rts = 		f81232_dtr_rts,
	.carrier_raised =	f81232_carrier_raised,
	.ioctl =		f81232_ioctl,
	.break_ctl =		f81232_break_ctl,
	.set_termios =		f81232_set_termios,
	.tiocmget =		f81232_tiocmget,
	.tiocmset =		f81232_tiocmset,
	.process_read_urb =	f81232_process_read_urb,
	.read_int_callback =	f81232_read_int_callback,
	.attach =		f81232_startup,
	.release =		f81232_release,
};

static struct usb_serial_driver * const serial_drivers[] = {
	&f81232_device,
	NULL,
};

module_usb_serial_driver(serial_drivers, id_table);

MODULE_DESCRIPTION("Fintek F81232 USB to serial adaptor driver");
MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org");
MODULE_LICENSE("GPL v2");

module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
Commit	Line	Data
aac1fc38 GKH	1	/*
	2	* Fintek F81232 USB to serial adaptor driver
	3	*
	4	* Copyright (C) 2012 Greg Kroah-Hartman (gregkh@linuxfoundation.org)
	5	* Copyright (C) 2012 Linux Foundation
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License version 2 as published by
	9	* the Free Software Foundation.
	10	*
	11	*/
	12
	13	#include <linux/kernel.h>
	14	#include <linux/errno.h>
	15	#include <linux/init.h>
	16	#include <linux/slab.h>
	17	#include <linux/tty.h>
	18	#include <linux/tty_driver.h>
	19	#include <linux/tty_flip.h>
	20	#include <linux/serial.h>
	21	#include <linux/module.h>
	22	#include <linux/moduleparam.h>
	23	#include <linux/spinlock.h>
	24	#include <linux/uaccess.h>
	25	#include <linux/usb.h>
	26	#include <linux/usb/serial.h>
	27
	28	static bool debug;
	29
	30	static const struct usb_device_id id_table[] = {
	31	{ USB_DEVICE(0x1934, 0x0706) },
	32	{ } /* Terminating entry */
	33	};
	34	MODULE_DEVICE_TABLE(usb, id_table);
	35
	36	#define CONTROL_DTR 0x01
	37	#define CONTROL_RTS 0x02
	38
	39	#define UART_STATE 0x08
	40	#define UART_STATE_TRANSIENT_MASK 0x74
	41	#define UART_DCD 0x01
	42	#define UART_DSR 0x02
	43	#define UART_BREAK_ERROR 0x04
	44	#define UART_RING 0x08
	45	#define UART_FRAME_ERROR 0x10
	46	#define UART_PARITY_ERROR 0x20
	47	#define UART_OVERRUN_ERROR 0x40
	48	#define UART_CTS 0x80
	49
	50	struct f81232_private {
	51	spinlock_t lock;
	52	wait_queue_head_t delta_msr_wait;
	53	u8 line_control;
	54	u8 line_status;
	55	};
	56
	57	static void f81232_update_line_status(struct usb_serial_port *port,
	58	unsigned char *data,
	59	unsigned int actual_length)
	60	{
	61	}
	62
	63	static void f81232_read_int_callback(struct urb *urb)
	64	{
65	struct usb_serial_port *port = urb->context;
66	unsigned char *data = urb->transfer_buffer;
67	unsigned int actual_length = urb->actual_length;
68	int status = urb->status;
69	int retval;
70
aac1fc38 GKH	71	switch (status) {
	72	case 0:
	73	/* success */
	74	break;
	75	case -ECONNRESET:
	76	case -ENOENT:
	77	case -ESHUTDOWN:
	78	/* this urb is terminated, clean up */
a94e9b94 GKH	79	dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
a94e9b94 GKH	80	__func__, status);
aac1fc38 GKH	81	return;
aac1fc38 GKH	82	default:
a94e9b94 GKH	83	dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
a94e9b94 GKH	84	__func__, status);
aac1fc38 GKH	85	goto exit;
	86	}
	87
	88	usb_serial_debug_data(debug, &port->dev, __func__,
	89	urb->actual_length, urb->transfer_buffer);
	90
	91	f81232_update_line_status(port, data, actual_length);
	92
	93	exit:
	94	retval = usb_submit_urb(urb, GFP_ATOMIC);
	95	if (retval)
	96	dev_err(&urb->dev->dev,
	97	"%s - usb_submit_urb failed with result %d\n",
	98	__func__, retval);
	99	}
	100
	101	static void f81232_process_read_urb(struct urb *urb)
	102	{
	103	struct usb_serial_port *port = urb->context;
	104	struct f81232_private *priv = usb_get_serial_port_data(port);
	105	struct tty_struct *tty;
	106	unsigned char *data = urb->transfer_buffer;
	107	char tty_flag = TTY_NORMAL;
	108	unsigned long flags;
	109	u8 line_status;
	110	int i;
	111
	112	/* update line status */
	113	spin_lock_irqsave(&priv->lock, flags);
	114	line_status = priv->line_status;
	115	priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
	116	spin_unlock_irqrestore(&priv->lock, flags);
	117	wake_up_interruptible(&priv->delta_msr_wait);
	118
	119	if (!urb->actual_length)
	120	return;
	121
	122	tty = tty_port_tty_get(&port->port);
	123	if (!tty)
	124	return;
	125
	126	/* break takes precedence over parity, */
	127	/* which takes precedence over framing errors */
	128	if (line_status & UART_BREAK_ERROR)
	129	tty_flag = TTY_BREAK;
	130	else if (line_status & UART_PARITY_ERROR)
	131	tty_flag = TTY_PARITY;
	132	else if (line_status & UART_FRAME_ERROR)
	133	tty_flag = TTY_FRAME;
a94e9b94	134	dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag);
aac1fc38 GKH	135
	136	/* overrun is special, not associated with a char */
	137	if (line_status & UART_OVERRUN_ERROR)
	138	tty_insert_flip_char(tty, 0, TTY_OVERRUN);
	139
	140	if (port->port.console && port->sysrq) {
	141	for (i = 0; i < urb->actual_length; ++i)
	142	if (!usb_serial_handle_sysrq_char(port, data[i]))
	143	tty_insert_flip_char(tty, data[i], tty_flag);
	144	} else {
	145	tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
	146	urb->actual_length);
	147	}
	148
	149	tty_flip_buffer_push(tty);
	150	tty_kref_put(tty);
	151	}
	152
	153	static int set_control_lines(struct usb_device *dev, u8 value)
	154	{
	155	/* FIXME - Stubbed out for now */
	156	return 0;
	157	}
	158
	159	static void f81232_break_ctl(struct tty_struct *tty, int break_state)
	160	{
	161	/* FIXME - Stubbed out for now */
	162
	163	/*
	164	* break_state = -1 to turn on break, and 0 to turn off break
	165	* see drivers/char/tty_io.c to see it used.
	166	* last_set_data_urb_value NEVER has the break bit set in it.
	167	*/
	168	}
	169
	170	static void f81232_set_termios(struct tty_struct *tty,
	171	struct usb_serial_port port, struct ktermios old_termios)
	172	{
	173	/* FIXME - Stubbed out for now */
	174
	175	/* Don't change anything if nothing has changed */
	176	if (!tty_termios_hw_change(tty->termios, old_termios))
	177	return;
	178
	179	/* Do the real work here... */
	180	}
	181
	182	static int f81232_tiocmget(struct tty_struct *tty)
	183	{
	184	/* FIXME - Stubbed out for now */
	185	return 0;
	186	}
	187
	188	static int f81232_tiocmset(struct tty_struct *tty,
	189	unsigned int set, unsigned int clear)
	190	{
	191	/* FIXME - Stubbed out for now */
	192	return 0;
	193	}
	194
	195	static int f81232_open(struct tty_struct tty, struct usb_serial_port port)
	196	{
	197	struct ktermios tmp_termios;
	198	int result;
199
200	/* Setup termios */
201	if (tty)
202	f81232_set_termios(tty, port, &tmp_termios);
203
aac1fc38 GKH	204	result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
	205	if (result) {
	206	dev_err(&port->dev, "%s - failed submitting interrupt urb,"
	207	" error %d\n", __func__, result);
	208	return result;
	209	}
	210
	211	result = usb_serial_generic_open(tty, port);
	212	if (result) {
	213	usb_kill_urb(port->interrupt_in_urb);
	214	return result;
	215	}
	216
	217	port->port.drain_delay = 256;
	218	return 0;
	219	}
	220
	221	static void f81232_close(struct usb_serial_port *port)
	222	{
	223	usb_serial_generic_close(port);
	224	usb_kill_urb(port->interrupt_in_urb);
	225	}
	226
	227	static void f81232_dtr_rts(struct usb_serial_port *port, int on)
	228	{
	229	struct f81232_private *priv = usb_get_serial_port_data(port);
	230	unsigned long flags;
	231	u8 control;
	232
	233	spin_lock_irqsave(&priv->lock, flags);
	234	/* Change DTR and RTS */
	235	if (on)
	236	priv->line_control \|= (CONTROL_DTR \| CONTROL_RTS);
	237	else
	238	priv->line_control &= ~(CONTROL_DTR \| CONTROL_RTS);
	239	control = priv->line_control;
	240	spin_unlock_irqrestore(&priv->lock, flags);
	241	set_control_lines(port->serial->dev, control);
	242	}
	243
	244	static int f81232_carrier_raised(struct usb_serial_port *port)
	245	{
	246	struct f81232_private *priv = usb_get_serial_port_data(port);
	247	if (priv->line_status & UART_DCD)
	248	return 1;
	249	return 0;
	250	}
	251
	252	static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
	253	{
	254	struct f81232_private *priv = usb_get_serial_port_data(port);
	255	unsigned long flags;
	256	unsigned int prevstatus;
	257	unsigned int status;
	258	unsigned int changed;
	259
	260	spin_lock_irqsave(&priv->lock, flags);
	261	prevstatus = priv->line_status;
	262	spin_unlock_irqrestore(&priv->lock, flags);
	263
	264	while (1) {
	265	interruptible_sleep_on(&priv->delta_msr_wait);
	266	/* see if a signal did it */
	267	if (signal_pending(current))
268	return -ERESTARTSYS;
269
270	spin_lock_irqsave(&priv->lock, flags);
271	status = priv->line_status;
272	spin_unlock_irqrestore(&priv->lock, flags);
273
274	changed = prevstatus ^ status;
275
276	if (((arg & TIOCM_RNG) && (changed & UART_RING)) \|\|
277	((arg & TIOCM_DSR) && (changed & UART_DSR)) \|\|
278	((arg & TIOCM_CD) && (changed & UART_DCD)) \|\|
279	((arg & TIOCM_CTS) && (changed & UART_CTS))) {
280	return 0;
281	}
282	prevstatus = status;
283	}
284	/* NOTREACHED */
285	return 0;
286	}
287
288	static int f81232_ioctl(struct tty_struct *tty,
289	unsigned int cmd, unsigned long arg)
290	{
291	struct serial_struct ser;
292	struct usb_serial_port *port = tty->driver_data;
a94e9b94 GKH	293
	294	dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__,
	295	port->number, cmd);
aac1fc38 GKH	296
	297	switch (cmd) {
	298	case TIOCGSERIAL:
	299	memset(&ser, 0, sizeof ser);
	300	ser.type = PORT_16654;
	301	ser.line = port->serial->minor;
	302	ser.port = port->number;
	303	ser.baud_base = 460800;
	304
	305	if (copy_to_user((void __user *)arg, &ser, sizeof ser))
	306	return -EFAULT;
	307
	308	return 0;
	309
	310	case TIOCMIWAIT:
a94e9b94 GKH	311	dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,
a94e9b94 GKH	312	port->number);
aac1fc38 GKH	313	return wait_modem_info(port, arg);
aac1fc38 GKH	314	default:
a94e9b94 GKH	315	dev_dbg(&port->dev, "%s not supported = 0x%04x\n",
a94e9b94 GKH	316	__func__, cmd);
aac1fc38 GKH	317	break;
	318	}
	319	return -ENOIOCTLCMD;
	320	}
	321
	322	static int f81232_startup(struct usb_serial *serial)
	323	{
	324	struct f81232_private *priv;
	325	int i;
	326
	327	for (i = 0; i < serial->num_ports; ++i) {
	328	priv = kzalloc(sizeof(struct f81232_private), GFP_KERNEL);
	329	if (!priv)
	330	goto cleanup;
	331	spin_lock_init(&priv->lock);
	332	init_waitqueue_head(&priv->delta_msr_wait);
	333	usb_set_serial_port_data(serial->port[i], priv);
	334	}
	335	return 0;
	336
	337	cleanup:
	338	for (--i; i >= 0; --i) {
	339	priv = usb_get_serial_port_data(serial->port[i]);
	340	kfree(priv);
	341	usb_set_serial_port_data(serial->port[i], NULL);
	342	}
	343	return -ENOMEM;
	344	}
	345
	346	static void f81232_release(struct usb_serial *serial)
	347	{
	348	int i;
	349	struct f81232_private *priv;
	350
	351	for (i = 0; i < serial->num_ports; ++i) {
	352	priv = usb_get_serial_port_data(serial->port[i]);
	353	kfree(priv);
	354	}
	355	}
	356
aac1fc38 GKH	357	static struct usb_serial_driver f81232_device = {
	358	.driver = {
	359	.owner = THIS_MODULE,
	360	.name = "f81232",
	361	},
	362	.id_table = id_table,
aac1fc38 GKH	363	.num_ports = 1,
	364	.bulk_in_size = 256,
	365	.bulk_out_size = 256,
	366	.open = f81232_open,
	367	.close = f81232_close,
	368	.dtr_rts = f81232_dtr_rts,
	369	.carrier_raised = f81232_carrier_raised,
	370	.ioctl = f81232_ioctl,
	371	.break_ctl = f81232_break_ctl,
	372	.set_termios = f81232_set_termios,
	373	.tiocmget = f81232_tiocmget,
	374	.tiocmset = f81232_tiocmset,
	375	.process_read_urb = f81232_process_read_urb,
	376	.read_int_callback = f81232_read_int_callback,
	377	.attach = f81232_startup,
	378	.release = f81232_release,
	379	};
	380
	381	static struct usb_serial_driver * const serial_drivers[] = {
	382	&f81232_device,
	383	NULL,
	384	};
	385
68e24113	386	module_usb_serial_driver(serial_drivers, id_table);
aac1fc38 GKH	387
	388	MODULE_DESCRIPTION("Fintek F81232 USB to serial adaptor driver");
	389	MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org");
	390	MODULE_LICENSE("GPL v2");
	391
	392	module_param(debug, bool, S_IRUGO \| S_IWUSR);
	393	MODULE_PARM_DESC(debug, "Debug enabled or not");
	394