Orange Pi5 kernel

 // SPDX-License-Identifier: GPL-2.0+
/*
 * IPWireless 3G UMTS TDD Modem driver (USB connected)
 *
 *   Copyright (C) 2004 Roelf Diedericks <roelfd@inet.co.za>
 *   Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
 *
 * All information about the device was acquired using SnoopyPro
 * on MSFT's O/S, and examing the MSFT drivers' debug output
 * (insanely left _on_ in the enduser version)
 *
 * It was written out of frustration with the IPWireless USB modem
 * supplied by Axity3G/Sentech South Africa not supporting
 * Linux whatsoever.
 *
 * Nobody provided any proprietary information that was not already
 * available for this device.
 *
 * The modem adheres to the "3GPP TS  27.007 AT command set for 3G
 * User Equipment (UE)" standard, available from
 * http://www.3gpp.org/ftp/Specs/html-info/27007.htm
 *
 * The code was only tested the IPWireless handheld modem distributed
 * in South Africa by Sentech.
 *
 * It may work for Woosh Inc in .nz too, as it appears they use the
 * same kit.
 *
 * There is still some work to be done in terms of handling
 * DCD, DTR, RTS, CTS which are currently faked.
 * It's good enough for PPP at this point. It's based off all kinds of
 * code found in usb/serial and usb/class
 */
 
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/uaccess.h>
#include "usb-wwan.h"
 
#define DRIVER_AUTHOR	"Roelf Diedericks"
#define DRIVER_DESC	"IPWireless tty driver"
 
#define IPW_TTY_MAJOR	240	/* real device node major id, experimental range */
#define IPW_TTY_MINORS	256	/* we support 256 devices, dunno why, it'd be insane :) */
 
#define USB_IPW_MAGIC	0x6d02	/* magic number for ipw struct */
 
 
/* Message sizes */
#define EVENT_BUFFER_SIZE	0xFF
#define CHAR2INT16(c1, c0)	(((u32)((c1) & 0xff) << 8) + (u32)((c0) & 0xff))
 
/* vendor/product pairs that are known work with this driver*/
#define IPW_VID		0x0bc3
#define IPW_PID		0x0001
 
 
/* Vendor commands: */
 
/* baud rates */
enum {
<------>ipw_sio_b256000 = 0x000e,
<------>ipw_sio_b128000 = 0x001d,
<------>ipw_sio_b115200 = 0x0020,
<------>ipw_sio_b57600  = 0x0040,
<------>ipw_sio_b56000  = 0x0042,
<------>ipw_sio_b38400  = 0x0060,
<------>ipw_sio_b19200  = 0x00c0,
<------>ipw_sio_b14400  = 0x0100,
<------>ipw_sio_b9600   = 0x0180,
<------>ipw_sio_b4800   = 0x0300,
<------>ipw_sio_b2400   = 0x0600,
<------>ipw_sio_b1200   = 0x0c00,
<------>ipw_sio_b600    = 0x1800
};
 
/* data bits */
#define ipw_dtb_7		0x700
#define ipw_dtb_8		0x810	/* ok so the define is misleading, I know, but forces 8,n,1 */
<------><------><------><------><------>/* I mean, is there a point to any other setting these days? :) */
 
/* usb control request types : */
#define IPW_SIO_RXCTL		0x00	/* control bulk rx channel transmissions, value=1/0 (on/off) */
#define IPW_SIO_SET_BAUD	0x01	/* set baud, value=requested ipw_sio_bxxxx */
#define IPW_SIO_SET_LINE	0x03	/* set databits, parity. value=ipw_dtb_x */
#define IPW_SIO_SET_PIN		0x03	/* set/clear dtr/rts value=ipw_pin_xxx */
#define IPW_SIO_POLL		0x08	/* get serial port status byte, call with value=0 */
#define IPW_SIO_INIT		0x11	/* initializes ? value=0 (appears as first thing todo on open) */
#define IPW_SIO_PURGE		0x12	/* purge all transmissions?, call with value=numchar_to_purge */
#define IPW_SIO_HANDFLOW	0x13	/* set xon/xoff limits value=0, and a buffer of 0x10 bytes */
#define IPW_SIO_SETCHARS	0x13	/* set the flowcontrol special chars, value=0, buf=6 bytes, */
<------><------><------><------><------>/* last 2 bytes contain flowcontrol chars e.g. 00 00 00 00 11 13 */
 
/* values used for request IPW_SIO_SET_PIN */
#define IPW_PIN_SETDTR		0x101
#define IPW_PIN_SETRTS		0x202
#define IPW_PIN_CLRDTR		0x100
#define IPW_PIN_CLRRTS		0x200 /* unconfirmed */
 
/* values used for request IPW_SIO_RXCTL */
#define IPW_RXBULK_ON		1
#define IPW_RXBULK_OFF		0
 
/* various 16 byte hardcoded transferbuffers used by flow control */
#define IPW_BYTES_FLOWINIT	{ 0x01, 0, 0, 0, 0x40, 0, 0, 0, \
<------><------><------><------><------>0, 0, 0, 0, 0, 0, 0, 0 }
 
/* Interpretation of modem status lines */
/* These need sorting out by individually connecting pins and checking
 * results. FIXME!
 * When data is being sent we see 0x30 in the lower byte; this must
 * contain DSR and CTS ...
 */
#define IPW_DSR			((1<<4) | (1<<5))
#define IPW_CTS			((1<<5) | (1<<4))
 
#define IPW_WANTS_TO_SEND	0x30
 
static const struct usb_device_id id_table[] = {
<------>{ USB_DEVICE(IPW_VID, IPW_PID) },
<------>{ },
};
MODULE_DEVICE_TABLE(usb, id_table);
 
static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port)
{
<------>struct usb_device *udev = port->serial->dev;
<------>struct device *dev = &port->dev;
<------>u8 buf_flow_static[16] = IPW_BYTES_FLOWINIT;
<------>u8 *buf_flow_init;
<------>int result;
 
<------>buf_flow_init = kmemdup(buf_flow_static, 16, GFP_KERNEL);
<------>if (!buf_flow_init)
<------><------>return -ENOMEM;
 
<------>/* --1: Tell the modem to initialize (we think) From sniffs this is
<------> *	always the first thing that gets sent to the modem during
<------> *	opening of the device */
<------>dev_dbg(dev, "%s: Sending SIO_INIT (we guess)\n", __func__);
<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
<------><------><------> IPW_SIO_INIT,
<------><------><------> USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
<------><------><------> 0,
<------><------><------> 0, /* index */
<------><------><------> NULL,
<------><------><------> 0,
<------><------><------> 100000);
<------>if (result < 0)
<------><------>dev_err(dev, "Init of modem failed (error = %d)\n", result);
 
<------>/* reset the bulk pipes */
<------>usb_clear_halt(udev, usb_rcvbulkpipe(udev, port->bulk_in_endpointAddress));
<------>usb_clear_halt(udev, usb_sndbulkpipe(udev, port->bulk_out_endpointAddress));
 
<------>/*--2: Start reading from the device */
<------>dev_dbg(dev, "%s: setting up bulk read callback\n", __func__);
<------>usb_wwan_open(tty, port);
 
<------>/*--3: Tell the modem to open the floodgates on the rx bulk channel */
<------>dev_dbg(dev, "%s:asking modem for RxRead (RXBULK_ON)\n", __func__);
<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
<------><------><------> IPW_SIO_RXCTL,
<------><------><------> USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
<------><------><------> IPW_RXBULK_ON,
<------><------><------> 0, /* index */
<------><------><------> NULL,
<------><------><------> 0,
<------><------><------> 100000);
<------>if (result < 0)
<------><------>dev_err(dev, "Enabling bulk RxRead failed (error = %d)\n", result);
 
<------>/*--4: setup the initial flowcontrol */
<------>dev_dbg(dev, "%s:setting init flowcontrol (%s)\n", __func__, buf_flow_init);
<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
<------><------><------> IPW_SIO_HANDFLOW,
<------><------><------> USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
<------><------><------> 0,
<------><------><------> 0,
<------><------><------> buf_flow_init,
<------><------><------> 0x10,
<------><------><------> 200000);
<------>if (result < 0)
<------><------>dev_err(dev, "initial flowcontrol failed (error = %d)\n", result);
 
<------>kfree(buf_flow_init);
<------>return 0;
}
 
static int ipw_attach(struct usb_serial *serial)
{
<------>struct usb_wwan_intf_private *data;
 
<------>data = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL);
<------>if (!data)
<------><------>return -ENOMEM;
 
<------>spin_lock_init(&data->susp_lock);
<------>usb_set_serial_data(serial, data);
<------>return 0;
}
 
static void ipw_release(struct usb_serial *serial)
{
<------>struct usb_wwan_intf_private *data = usb_get_serial_data(serial);
 
<------>usb_set_serial_data(serial, NULL);
<------>kfree(data);
}
 
static void ipw_dtr_rts(struct usb_serial_port *port, int on)
{
<------>struct usb_device *udev = port->serial->dev;
<------>struct device *dev = &port->dev;
<------>int result;
 
<------>dev_dbg(dev, "%s: on = %d\n", __func__, on);
 
<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
<------><------><------> IPW_SIO_SET_PIN,
<------><------><------> USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
<------><------><------> on ? IPW_PIN_SETDTR : IPW_PIN_CLRDTR,
<------><------><------> 0,
<------><------><------> NULL,
<------><------><------> 0,
<------><------><------> 200000);
<------>if (result < 0)
<------><------>dev_err(dev, "setting dtr failed (error = %d)\n", result);
 
<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
<------><------><------> IPW_SIO_SET_PIN, USB_TYPE_VENDOR |
<------><------><------><------><------>USB_RECIP_INTERFACE | USB_DIR_OUT,
<------><------><------> on ? IPW_PIN_SETRTS : IPW_PIN_CLRRTS,
<------><------><------> 0,
<------><------><------> NULL,
<------><------><------> 0,
<------><------><------> 200000);
<------>if (result < 0)
<------><------>dev_err(dev, "setting rts failed (error = %d)\n", result);
}
 
static void ipw_close(struct usb_serial_port *port)
{
<------>struct usb_device *udev = port->serial->dev;
<------>struct device *dev = &port->dev;
<------>int result;
 
<------>/*--3: purge */
<------>dev_dbg(dev, "%s:sending purge\n", __func__);
<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
<------><------><------> IPW_SIO_PURGE, USB_TYPE_VENDOR |
<------><------><------> 		USB_RECIP_INTERFACE | USB_DIR_OUT,
<------><------><------> 0x03,
<------><------><------> 0,
<------><------><------> NULL,
<------><------><------> 0,
<------><------><------> 200000);
<------>if (result < 0)
<------><------>dev_err(dev, "purge failed (error = %d)\n", result);
 
 
<------>/* send RXBULK_off (tell modem to stop transmitting bulk data on
<------>   rx chan) */
<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
<------><------><------> IPW_SIO_RXCTL,
<------><------><------> USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
<------><------><------> IPW_RXBULK_OFF,
<------><------><------> 0, /* index */
<------><------><------> NULL,
<------><------><------> 0,
<------><------><------> 100000);
 
<------>if (result < 0)
<------><------>dev_err(dev, "Disabling bulk RxRead failed (error = %d)\n", result);
 
<------>usb_wwan_close(port);
}
 
static struct usb_serial_driver ipw_device = {
<------>.driver = {
<------><------>.owner =	THIS_MODULE,
<------><------>.name =		"ipw",
<------>},
<------>.description =		"IPWireless converter",
<------>.id_table =		id_table,
<------>.num_ports =		1,
<------>.open =			ipw_open,
<------>.close =		ipw_close,
<------>.attach =		ipw_attach,
<------>.release =		ipw_release,
<------>.port_probe =		usb_wwan_port_probe,
<------>.port_remove =		usb_wwan_port_remove,
<------>.dtr_rts =		ipw_dtr_rts,
<------>.write =		usb_wwan_write,
};
 
static struct usb_serial_driver * const serial_drivers[] = {
<------>&ipw_device, NULL
};
 
module_usb_serial_driver(serial_drivers, id_table);
 
/* Module information */
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

	// SPDX-License-Identifier: GPL-2.0+
	/*
	* IPWireless 3G UMTS TDD Modem driver (USB connected)
	*
	* Copyright (C) 2004 Roelf Diedericks <roelfd@inet.co.za>
	* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
	*
	* All information about the device was acquired using SnoopyPro
	* on MSFT's O/S, and examing the MSFT drivers' debug output
	* (insanely left _on_ in the enduser version)
	*
	* It was written out of frustration with the IPWireless USB modem
	* supplied by Axity3G/Sentech South Africa not supporting
	* Linux whatsoever.
	*
	* Nobody provided any proprietary information that was not already
	* available for this device.
	*
	* The modem adheres to the "3GPP TS 27.007 AT command set for 3G
	* User Equipment (UE)" standard, available from
	* http://www.3gpp.org/ftp/Specs/html-info/27007.htm
	*
	* The code was only tested the IPWireless handheld modem distributed
	* in South Africa by Sentech.
	*
	* It may work for Woosh Inc in .nz too, as it appears they use the
	* same kit.
	*
	* There is still some work to be done in terms of handling
	* DCD, DTR, RTS, CTS which are currently faked.
	* It's good enough for PPP at this point. It's based off all kinds of
	* code found in usb/serial and usb/class
	*/

	#include <linux/kernel.h>
	#include <linux/errno.h>
	#include <linux/slab.h>
	#include <linux/tty.h>
	#include <linux/tty_flip.h>
	#include <linux/module.h>
	#include <linux/spinlock.h>
	#include <linux/usb.h>
	#include <linux/usb/serial.h>
	#include <linux/uaccess.h>
	#include "usb-wwan.h"

	#define DRIVER_AUTHOR "Roelf Diedericks"
	#define DRIVER_DESC "IPWireless tty driver"

	#define IPW_TTY_MAJOR 240 /* real device node major id, experimental range */
	#define IPW_TTY_MINORS 256 /* we support 256 devices, dunno why, it'd be insane :) */

	#define USB_IPW_MAGIC 0x6d02 /* magic number for ipw struct */


	/* Message sizes */
	#define EVENT_BUFFER_SIZE 0xFF
	#define CHAR2INT16(c1, c0) (((u32)((c1) & 0xff) << 8) + (u32)((c0) & 0xff))

	/* vendor/product pairs that are known work with this driver*/
	#define IPW_VID 0x0bc3
	#define IPW_PID 0x0001


	/* Vendor commands: */

	/* baud rates */
	enum {
	<------>ipw_sio_b256000 = 0x000e,
	<------>ipw_sio_b128000 = 0x001d,
	<------>ipw_sio_b115200 = 0x0020,
	<------>ipw_sio_b57600 = 0x0040,
	<------>ipw_sio_b56000 = 0x0042,
	<------>ipw_sio_b38400 = 0x0060,
	<------>ipw_sio_b19200 = 0x00c0,
	<------>ipw_sio_b14400 = 0x0100,
	<------>ipw_sio_b9600 = 0x0180,
	<------>ipw_sio_b4800 = 0x0300,
	<------>ipw_sio_b2400 = 0x0600,
	<------>ipw_sio_b1200 = 0x0c00,
	<------>ipw_sio_b600 = 0x1800
	};

	/* data bits */
	#define ipw_dtb_7 0x700
	#define ipw_dtb_8 0x810 /* ok so the define is misleading, I know, but forces 8,n,1 */
	<------><------><------><------><------>/* I mean, is there a point to any other setting these days? :) */

	/* usb control request types : */
	#define IPW_SIO_RXCTL 0x00 /* control bulk rx channel transmissions, value=1/0 (on/off) */
	#define IPW_SIO_SET_BAUD 0x01 /* set baud, value=requested ipw_sio_bxxxx */
	#define IPW_SIO_SET_LINE 0x03 /* set databits, parity. value=ipw_dtb_x */
	#define IPW_SIO_SET_PIN 0x03 /* set/clear dtr/rts value=ipw_pin_xxx */
	#define IPW_SIO_POLL 0x08 /* get serial port status byte, call with value=0 */
	#define IPW_SIO_INIT 0x11 /* initializes ? value=0 (appears as first thing todo on open) */
	#define IPW_SIO_PURGE 0x12 /* purge all transmissions?, call with value=numchar_to_purge */
	#define IPW_SIO_HANDFLOW 0x13 /* set xon/xoff limits value=0, and a buffer of 0x10 bytes */
	#define IPW_SIO_SETCHARS 0x13 /* set the flowcontrol special chars, value=0, buf=6 bytes, */
	<------><------><------><------><------>/* last 2 bytes contain flowcontrol chars e.g. 00 00 00 00 11 13 */

	/* values used for request IPW_SIO_SET_PIN */
	#define IPW_PIN_SETDTR 0x101
	#define IPW_PIN_SETRTS 0x202
	#define IPW_PIN_CLRDTR 0x100
	#define IPW_PIN_CLRRTS 0x200 /* unconfirmed */

	/* values used for request IPW_SIO_RXCTL */
	#define IPW_RXBULK_ON 1
	#define IPW_RXBULK_OFF 0

	/* various 16 byte hardcoded transferbuffers used by flow control */
	#define IPW_BYTES_FLOWINIT { 0x01, 0, 0, 0, 0x40, 0, 0, 0, \
	<------><------><------><------><------>0, 0, 0, 0, 0, 0, 0, 0 }

	/* Interpretation of modem status lines */
	/* These need sorting out by individually connecting pins and checking
	* results. FIXME!
	* When data is being sent we see 0x30 in the lower byte; this must
	* contain DSR and CTS ...
	*/
	#define IPW_DSR ((1<<4) \| (1<<5))
	#define IPW_CTS ((1<<5) \| (1<<4))

	#define IPW_WANTS_TO_SEND 0x30

	static const struct usb_device_id id_table[] = {
	<------>{ USB_DEVICE(IPW_VID, IPW_PID) },
	<------>{ },
	};
	MODULE_DEVICE_TABLE(usb, id_table);

	static int ipw_open(struct tty_struct tty, struct usb_serial_port port)
	{
	<------>struct usb_device *udev = port->serial->dev;
	<------>struct device *dev = &port->dev;
	<------>u8 buf_flow_static[16] = IPW_BYTES_FLOWINIT;
	<------>u8 *buf_flow_init;
	<------>int result;

	<------>buf_flow_init = kmemdup(buf_flow_static, 16, GFP_KERNEL);
	<------>if (!buf_flow_init)
	<------><------>return -ENOMEM;

	<------>/* --1: Tell the modem to initialize (we think) From sniffs this is
	<------> * always the first thing that gets sent to the modem during
	<------> * opening of the device */
	<------>dev_dbg(dev, "%s: Sending SIO_INIT (we guess)\n", __func__);
	<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	<------><------><------> IPW_SIO_INIT,
	<------><------><------> USB_TYPE_VENDOR \| USB_RECIP_INTERFACE \| USB_DIR_OUT,
	<------><------><------> 0,
	<------><------><------> 0, /* index */
	<------><------><------> NULL,
	<------><------><------> 0,
	<------><------><------> 100000);
	<------>if (result < 0)
	<------><------>dev_err(dev, "Init of modem failed (error = %d)\n", result);

	<------>/* reset the bulk pipes */
	<------>usb_clear_halt(udev, usb_rcvbulkpipe(udev, port->bulk_in_endpointAddress));
	<------>usb_clear_halt(udev, usb_sndbulkpipe(udev, port->bulk_out_endpointAddress));

	<------>/--2: Start reading from the device /
	<------>dev_dbg(dev, "%s: setting up bulk read callback\n", __func__);
	<------>usb_wwan_open(tty, port);

	<------>/--3: Tell the modem to open the floodgates on the rx bulk channel /
	<------>dev_dbg(dev, "%s:asking modem for RxRead (RXBULK_ON)\n", __func__);
	<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	<------><------><------> IPW_SIO_RXCTL,
	<------><------><------> USB_TYPE_VENDOR \| USB_RECIP_INTERFACE \| USB_DIR_OUT,
	<------><------><------> IPW_RXBULK_ON,
	<------><------><------> 0, /* index */
	<------><------><------> NULL,
	<------><------><------> 0,
	<------><------><------> 100000);
	<------>if (result < 0)
	<------><------>dev_err(dev, "Enabling bulk RxRead failed (error = %d)\n", result);

	<------>/--4: setup the initial flowcontrol /
	<------>dev_dbg(dev, "%s:setting init flowcontrol (%s)\n", __func__, buf_flow_init);
	<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	<------><------><------> IPW_SIO_HANDFLOW,
	<------><------><------> USB_TYPE_VENDOR \| USB_RECIP_INTERFACE \| USB_DIR_OUT,
	<------><------><------> 0,
	<------><------><------> 0,
	<------><------><------> buf_flow_init,
	<------><------><------> 0x10,
	<------><------><------> 200000);
	<------>if (result < 0)
	<------><------>dev_err(dev, "initial flowcontrol failed (error = %d)\n", result);

	<------>kfree(buf_flow_init);
	<------>return 0;
	}

	static int ipw_attach(struct usb_serial *serial)
	{
	<------>struct usb_wwan_intf_private *data;

	<------>data = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL);
	<------>if (!data)
	<------><------>return -ENOMEM;

	<------>spin_lock_init(&data->susp_lock);
	<------>usb_set_serial_data(serial, data);
	<------>return 0;
	}

	static void ipw_release(struct usb_serial *serial)
	{
	<------>struct usb_wwan_intf_private *data = usb_get_serial_data(serial);

	<------>usb_set_serial_data(serial, NULL);
	<------>kfree(data);
	}

	static void ipw_dtr_rts(struct usb_serial_port *port, int on)
	{
	<------>struct usb_device *udev = port->serial->dev;
	<------>struct device *dev = &port->dev;
	<------>int result;

	<------>dev_dbg(dev, "%s: on = %d\n", __func__, on);

	<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	<------><------><------> IPW_SIO_SET_PIN,
	<------><------><------> USB_TYPE_VENDOR \| USB_RECIP_INTERFACE \| USB_DIR_OUT,
	<------><------><------> on ? IPW_PIN_SETDTR : IPW_PIN_CLRDTR,
	<------><------><------> 0,
	<------><------><------> NULL,
	<------><------><------> 0,
	<------><------><------> 200000);
	<------>if (result < 0)
	<------><------>dev_err(dev, "setting dtr failed (error = %d)\n", result);

	<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	<------><------><------> IPW_SIO_SET_PIN, USB_TYPE_VENDOR \|
	<------><------><------><------><------>USB_RECIP_INTERFACE \| USB_DIR_OUT,
	<------><------><------> on ? IPW_PIN_SETRTS : IPW_PIN_CLRRTS,
	<------><------><------> 0,
	<------><------><------> NULL,
	<------><------><------> 0,
	<------><------><------> 200000);
	<------>if (result < 0)
	<------><------>dev_err(dev, "setting rts failed (error = %d)\n", result);
	}

	static void ipw_close(struct usb_serial_port *port)
	{
	<------>struct usb_device *udev = port->serial->dev;
	<------>struct device *dev = &port->dev;
	<------>int result;

	<------>/--3: purge /
	<------>dev_dbg(dev, "%s:sending purge\n", __func__);
	<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	<------><------><------> IPW_SIO_PURGE, USB_TYPE_VENDOR \|
	<------><------><------> USB_RECIP_INTERFACE \| USB_DIR_OUT,
	<------><------><------> 0x03,
	<------><------><------> 0,
	<------><------><------> NULL,
	<------><------><------> 0,
	<------><------><------> 200000);
	<------>if (result < 0)
	<------><------>dev_err(dev, "purge failed (error = %d)\n", result);


	<------>/* send RXBULK_off (tell modem to stop transmitting bulk data on
	<------> rx chan) */
	<------>result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	<------><------><------> IPW_SIO_RXCTL,
	<------><------><------> USB_TYPE_VENDOR \| USB_RECIP_INTERFACE \| USB_DIR_OUT,
	<------><------><------> IPW_RXBULK_OFF,
	<------><------><------> 0, /* index */
	<------><------><------> NULL,
	<------><------><------> 0,
	<------><------><------> 100000);

	<------>if (result < 0)
	<------><------>dev_err(dev, "Disabling bulk RxRead failed (error = %d)\n", result);

	<------>usb_wwan_close(port);
	}

	static struct usb_serial_driver ipw_device = {
	<------>.driver = {
	<------><------>.owner = THIS_MODULE,
	<------><------>.name = "ipw",
	<------>},
	<------>.description = "IPWireless converter",
	<------>.id_table = id_table,
	<------>.num_ports = 1,
	<------>.open = ipw_open,
	<------>.close = ipw_close,
	<------>.attach = ipw_attach,
	<------>.release = ipw_release,
	<------>.port_probe = usb_wwan_port_probe,
	<------>.port_remove = usb_wwan_port_remove,
	<------>.dtr_rts = ipw_dtr_rts,
	<------>.write = usb_wwan_write,
	};

	static struct usb_serial_driver * const serial_drivers[] = {
	<------>&ipw_device, NULL
	};

	module_usb_serial_driver(serial_drivers, id_table);

	/* Module information */
	MODULE_AUTHOR(DRIVER_AUTHOR);
	MODULE_DESCRIPTION(DRIVER_DESC);
	MODULE_LICENSE("GPL");