// SPDX-License-Identifier: GPL-2.0+
/*
 * USB FTDI SIO driver
 *
 *      Copyright (C) 2009 - 2013
 *          Johan Hovold (jhovold@gmail.com)
 *      Copyright (C) 1999 - 2001
 *          Greg Kroah-Hartman (greg@kroah.com)
 *          Bill Ryder (bryder@sgi.com)
 *      Copyright (C) 2002
 *          Kuba Ober (kuba@mareimbrium.org)
 *
 * See Documentation/usb/usb-serial.rst for more information on using this
 * driver
 *
 * See http://ftdi-usb-sio.sourceforge.net for up to date testing info
 *      and extra documentation
 *
 * Change entries from 2004 and earlier can be found in versions of this
 * file in kernel versions prior to the 2.6.24 release.
 *
 */

/* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
/* Thanx to FTDI for so kindly providing details of the protocol required */
/*   to talk to the device */
/* Thanx to gkh and the rest of the usb dev group for all code I have
   assimilated :-) */

#include <linux/kernel.h>
#include <linux/errno.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/spinlock.h>
#include <linux/mutex.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/serial.h>
#include <linux/gpio/driver.h>
#include <linux/usb/serial.h>
#include "ftdi_sio.h"
#include "ftdi_sio_ids.h"

#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>, Andreas Mohr, Johan Hovold <jhovold@gmail.com>"
#define DRIVER_DESC "USB FTDI Serial Converters Driver"


struct ftdi_private {
        enum ftdi_chip_type chip_type;
                                /* type of device, either SIO or FT8U232AM */
        int baud_base;          /* baud base clock for divisor setting */
        int custom_divisor;     /* custom_divisor kludge, this is for
                                   baud_base (different from what goes to the
                                   chip!) */
        u16 last_set_data_value; /* the last data state set - needed for doing
                                  * a break
                                  */
        int flags;              /* some ASYNC_xxxx flags are supported */
        unsigned long last_dtr_rts;     /* saved modem control outputs */
        char prev_status;        /* Used for TIOCMIWAIT */
        char transmit_empty;    /* If transmitter is empty or not */
        u16 interface;          /* FT2232C, FT2232H or FT4232H port interface
                                   (0 for FT232/245) */

        speed_t force_baud;     /* if non-zero, force the baud rate to
                                   this value */
        int force_rtscts;       /* if non-zero, force RTS-CTS to always
                                   be enabled */

        unsigned int latency;           /* latency setting in use */
        unsigned short max_packet_size;
        struct mutex cfg_lock; /* Avoid mess by parallel calls of config ioctl() and change_speed() */
#ifdef CONFIG_GPIOLIB
        struct gpio_chip gc;
        struct mutex gpio_lock; /* protects GPIO state */
        bool gpio_registered;   /* is the gpiochip in kernel registered */
        bool gpio_used;         /* true if the user requested a gpio */
        u8 gpio_altfunc;        /* which pins are in gpio mode */
        u8 gpio_output;         /* pin directions cache */
        u8 gpio_value;          /* pin value for outputs */
#endif
};

/* struct ftdi_sio_quirk is used by devices requiring special attention. */
struct ftdi_sio_quirk {
        int (*probe)(struct usb_serial *);
        /* Special settings for probed ports. */
        void (*port_probe)(struct ftdi_private *);
};

static int   ftdi_jtag_probe(struct usb_serial *serial);
static int   ftdi_NDI_device_setup(struct usb_serial *serial);
static int   ftdi_stmclite_probe(struct usb_serial *serial);
static int   ftdi_8u2232c_probe(struct usb_serial *serial);
static void  ftdi_USB_UIRT_setup(struct ftdi_private *priv);
static void  ftdi_HE_TIRA1_setup(struct ftdi_private *priv);

static const struct ftdi_sio_quirk ftdi_jtag_quirk = {
        .probe  = ftdi_jtag_probe,
};

static const struct ftdi_sio_quirk ftdi_NDI_device_quirk = {
        .probe  = ftdi_NDI_device_setup,
};

static const struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
        .port_probe = ftdi_USB_UIRT_setup,
};

static const struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
        .port_probe = ftdi_HE_TIRA1_setup,
};

static const struct ftdi_sio_quirk ftdi_stmclite_quirk = {
        .probe  = ftdi_stmclite_probe,
};

static const struct ftdi_sio_quirk ftdi_8u2232c_quirk = {
        .probe  = ftdi_8u2232c_probe,
};

/*
 * The 8U232AM has the same API as the sio except for:
 * - it can support MUCH higher baudrates; up to:
 *   o 921600 for RS232 and 2000000 for RS422/485 at 48MHz
 *   o 230400 at 12MHz
 *   so .. 8U232AM's baudrate setting codes are different
 * - it has a two byte status code.
 * - it returns characters every 16ms (the FTDI does it every 40ms)
 *
 * the bcdDevice value is used to differentiate FT232BM and FT245BM from
 * the earlier FT8U232AM and FT8U232BM.  For now, include all known VID/PID
 * combinations in both tables.
 * FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
 * but I don't know if those ever went into mass production. [Ian Abbott]
 */



/*
 * Device ID not listed? Test it using
 * /sys/bus/usb-serial/drivers/ftdi_sio/new_id and send a patch or report.
 */
static const struct usb_device_id id_table_combined[] = {
        { USB_DEVICE(FTDI_VID, FTDI_BRICK_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ZEITCONTROL_TAGTRACE_MIFARE_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CTI_MINI_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CTI_NANO_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_BM_ATOM_NANO_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_NXTCAM_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_EV3CON_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_3_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_4_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_5_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_6_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_7_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_USINT_CAT_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_USINT_WKEY_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_USINT_RS232_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IPLUS2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_DMX4ALL) },
        { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) ,
                .driver_info = (kernel_ulong_t)&ftdi_8u2232c_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_232H_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_FTX_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_SNIFFER_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_THROTTLE_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GATEWAY_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GBM_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GBM_BOOST_PID) },
        { USB_DEVICE(NEWPORT_VID, NEWPORT_AGILIS_PID) },
        { USB_DEVICE(NEWPORT_VID, NEWPORT_CONEX_CC_PID) },
        { USB_DEVICE(NEWPORT_VID, NEWPORT_CONEX_AGP_PID) },
        { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
        { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
        { USB_DEVICE(FTDI_VID, FTDI_TAGSYS_LP101_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TAGSYS_P200X_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_LENZ_LIUSB_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_URBAN_0_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_URBAN_1_PID) },
        { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) },
        { USB_DEVICE(FTDI_VID, FTDI_VARDAAN_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0103_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0104_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0105_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0106_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0107_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0108_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0109_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_010F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0110_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0111_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0112_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0113_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0114_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0115_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0116_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0117_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0118_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0119_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_011F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0120_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0121_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0122_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0123_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0124_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0125_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0126_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0127_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0128_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0129_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_012F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0130_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0131_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0132_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0133_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0134_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0135_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0136_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0137_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0138_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0139_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_013F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0140_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0141_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0142_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0143_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0144_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0145_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0146_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0147_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0148_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0149_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_014F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0150_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0151_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0152_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0153_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0154_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0155_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0156_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0157_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0158_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0159_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_015F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0160_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0161_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0162_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0163_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0164_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0165_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0166_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0167_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0168_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0169_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_016F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0170_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0171_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0172_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0173_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0174_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0175_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0176_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0177_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0178_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0179_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_017F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0180_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0181_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0182_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0183_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0184_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0185_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0186_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0187_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0188_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0189_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_018F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0190_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0191_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0192_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0193_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0194_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0195_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0196_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0197_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0198_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0199_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_019F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A0_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A1_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A2_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A3_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A4_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A5_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A6_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A7_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A8_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01A9_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AA_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AB_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AC_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AD_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AE_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01AF_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B0_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B1_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B2_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B3_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B4_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B5_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B6_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B7_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B8_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01B9_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BA_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BB_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BC_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BD_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BE_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01BF_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C0_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C1_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C2_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C3_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C4_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C5_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C6_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C7_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C8_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01C9_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CA_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CB_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CC_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CD_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CE_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01CF_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D0_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D1_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D2_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D3_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D4_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D5_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D6_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D7_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D8_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01D9_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DA_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DB_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DC_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DD_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DE_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01DF_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E0_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E1_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E2_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E3_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E4_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E5_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E6_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E7_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E8_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01E9_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EA_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EB_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EC_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01ED_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EE_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01EF_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F0_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F1_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F2_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F3_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F4_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F5_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F6_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F7_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F8_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01F9_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FA_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FB_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FC_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FD_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FE_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_01FF_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_4701_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9300_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9301_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9302_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9303_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9304_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9305_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9306_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9307_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9308_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9309_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_930A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_930B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_930C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_930D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_930E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_930F_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9310_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9311_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9312_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9313_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9314_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9315_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9316_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9317_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9318_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_9319_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_931A_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_931B_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_931C_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_931D_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_931E_PID) },
        { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_931F_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803R_1_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803R_2_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803R_3_PID) },
        { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803R_4_PID) },
        { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) },
        { USB_DEVICE(OCT_VID, OCT_US101_PID) },
        { USB_DEVICE(OCT_VID, OCT_DK201_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
                .driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
                .driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
        { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) },
        { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
        { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
        { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_US485_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_PICPRO_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_PCMCIA_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_PK1_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_RS232MON_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_APP70_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_PEDO_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IBS_PROD_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TAVIR_STK500_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TIAO_UMPA_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLXM_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLX_PLUS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_NT_ORION_IO_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SYNAPSE_SS200_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2WI_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX3_PID) },
        /*
         * ELV devices:
         */
        { USB_DEVICE(FTDI_ELV_VID, FTDI_ELV_WS300_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_USR_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_MSM1_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_KL100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_WS550_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_EC3000_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_WS888_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_TWS550_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_FEM_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UTP8_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_WS444PC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_HS485_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_UMS100_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_TFD128_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_FM3RX_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELV_WS777_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PALMSENS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_IVIUM_XSTAT_PID) },
        { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
        { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
        { USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
        { USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
        { USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) },
        { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
        { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
        { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
        { USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
        { USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
        { USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
        { USB_DEVICE(ACTON_VID, ACTON_SPECTRAPRO_PID) },
        { USB_DEVICE(CONTEC_VID, CONTEC_COM1USBH_PID) },
        { USB_DEVICE(MITSUBISHI_VID, MITSUBISHI_FXUSB_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USOPTL4_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USPTL4_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USO9ML2DR_2_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USO9ML2DR_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USOPTL4DR2_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_USOPTL4DR_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_485USB9F_2W_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_485USB9F_4W_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_232USB9M_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_485USBTB_2W_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_485USBTB_4W_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_TTL5USB9M_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_TTL3USB9M_PID) },
        { USB_DEVICE(BANDB_VID, BANDB_ZZ_PROG1_USB_PID) },
        { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
        { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_3_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
        { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
        { USB_DEVICE(XSENS_VID, XSENS_AWINDA_DONGLE_PID) },
        { USB_DEVICE(XSENS_VID, XSENS_AWINDA_STATION_PID) },
        { USB_DEVICE(XSENS_VID, XSENS_CONVERTER_PID) },
        { USB_DEVICE(XSENS_VID, XSENS_MTDEVBOARD_PID) },
        { USB_DEVICE(XSENS_VID, XSENS_MTW_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_OMNI1509) },
        { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
        { USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
        { USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
        { USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16IC_PID) },
        { USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
        { USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
        { USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_NZR_SEM_USB_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_1_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_OPC_U_UC_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP2C1_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP2C2_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP2D_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP2VT_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP2VR_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP4KVT_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP4KVR_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP2KVT_PID) },
        { USB_DEVICE(ICOM_VID, ICOM_ID_RP2KVR_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
        { USB_DEVICE(TESTO_VID, TESTO_1_PID) },
        { USB_DEVICE(TESTO_VID, TESTO_3_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
        { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID),
                .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID),
                .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID),
                .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID),
                .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID),
                .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
        { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
        { USB_DEVICE(NOVITUS_VID, NOVITUS_BONO_E_PID) },
        { USB_DEVICE(FTDI_VID, RTSYSTEMS_USB_VX8_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S03_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_59_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57A_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57B_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29A_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29B_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29F_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_62B_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S01_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_63_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29C_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_81B_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_82B_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K5D_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K4Y_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K5G_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S05_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_60_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_61_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_62_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_63B_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_64_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_65_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_92_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_92D_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_W5R_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_A5R_PID) },
        { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_PW1_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
        { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_PROPOX_ISPCABLEIII_PID) },
        { USB_DEVICE(FTDI_VID, CYBER_CORTEX_AV_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID, 1) },
        { USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_OCD_H_PID, 1) },
        { USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_TINY_PID, 1) },
        { USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_TINY_H_PID, 1) },
        { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, LMI_LM3S_DEVEL_BOARD_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, LMI_LM3S_ICDI_BOARD_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
        { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_SCU18) },
        { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },

        /* Papouch devices based on FTDI chip */
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SB485_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_AP485_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SB422_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SB485_2_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_AP485_2_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SB422_2_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SB485S_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SB485C_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_LEC_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SB232_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_IRAMP_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_DRAK5_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO8x8_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO2x2_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO10x1_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO30x3_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO60x3_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO2x16_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO3x32_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_DRAK6_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_UPSUSB_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_MU_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_SIMUKEY_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_AD4USB_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_GMUX_PID) },
        { USB_DEVICE(PAPOUCH_VID, PAPOUCH_GMSR_PID) },

        { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DGQG_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
        { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
        { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
        { USB_DEVICE(ATMEL_VID, STK541_PID) },
        { USB_DEVICE(DE_VID, STB_PID) },
        { USB_DEVICE(DE_VID, WHT_PID) },
        { USB_DEVICE(ADI_VID, ADI_GNICE_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(ADI_VID, ADI_GNICEPLUS_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE_AND_INTERFACE_INFO(MICROCHIP_VID, MICROCHIP_USB_BOARD_PID,
                                        USB_CLASS_VENDOR_SPEC,
                                        USB_SUBCLASS_VENDOR_SPEC, 0x00) },
        { USB_DEVICE_INTERFACE_NUMBER(ACTEL_VID, MICROSEMI_ARROW_SF2PLUS_BOARD_PID, 2) },
        { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
        { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
        { USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
        { USB_DEVICE(FTDI_VID, PI_C865_PID) },
        { USB_DEVICE(FTDI_VID, PI_C857_PID) },
        { USB_DEVICE(PI_VID, PI_C866_PID) },
        { USB_DEVICE(PI_VID, PI_C663_PID) },
        { USB_DEVICE(PI_VID, PI_C725_PID) },
        { USB_DEVICE(PI_VID, PI_E517_PID) },
        { USB_DEVICE(PI_VID, PI_C863_PID) },
        { USB_DEVICE(PI_VID, PI_E861_PID) },
        { USB_DEVICE(PI_VID, PI_C867_PID) },
        { USB_DEVICE(PI_VID, PI_E609_PID) },
        { USB_DEVICE(PI_VID, PI_E709_PID) },
        { USB_DEVICE(PI_VID, PI_100F_PID) },
        { USB_DEVICE(PI_VID, PI_1011_PID) },
        { USB_DEVICE(PI_VID, PI_1012_PID) },
        { USB_DEVICE(PI_VID, PI_1013_PID) },
        { USB_DEVICE(PI_VID, PI_1014_PID) },
        { USB_DEVICE(PI_VID, PI_1015_PID) },
        { USB_DEVICE(PI_VID, PI_1016_PID) },
        { USB_DEVICE(KONDO_VID, KONDO_USB_SERIAL_PID) },
        { USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
        { USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, TI_XDS100V2_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, HAMEG_HO820_PID) },
        { USB_DEVICE(FTDI_VID, HAMEG_HO720_PID) },
        { USB_DEVICE(FTDI_VID, HAMEG_HO730_PID) },
        { USB_DEVICE(FTDI_VID, HAMEG_HO870_PID) },
        { USB_DEVICE(FTDI_VID, MJSG_GENERIC_PID) },
        { USB_DEVICE(FTDI_VID, MJSG_SR_RADIO_PID) },
        { USB_DEVICE(FTDI_VID, MJSG_HD_RADIO_PID) },
        { USB_DEVICE(FTDI_VID, MJSG_XM_RADIO_PID) },
        { USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_ST_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_SLITE_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_SH2_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_SH4_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, SEGWAY_RMP200_PID) },
        { USB_DEVICE(FTDI_VID, ACCESIO_COM4SM_PID) },
        { USB_DEVICE(IONICS_VID, IONICS_PLUGCOMPUTER_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_24_MASTER_WING_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_PC_WING_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_USB_DMX_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_MIDI_TIMECODE_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_MINI_WING_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_MAXI_WING_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_MEDIA_WING_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CHAMSYS_WING_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_LOGBOOKML_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_LS_LOGBOOK_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_HS_LOGBOOK_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CINTERION_MC55I_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_FHE_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_DOTEC_PID) },
        { USB_DEVICE(QIHARDWARE_VID, MILKYMISTONE_JTAGSERIAL_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(ST_VID, ST_STMCLT_2232_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(ST_VID, ST_STMCLT_4232_PID),
                .driver_info = (kernel_ulong_t)&ftdi_stmclite_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_RF_R106) },
        { USB_DEVICE(FTDI_VID, FTDI_DISTORTEC_JTAG_LOCK_PICK_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_LUMEL_PD12_PID) },
        /* Crucible Devices */
        { USB_DEVICE(FTDI_VID, FTDI_CT_COMET_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_Z3X_PID) },
        /* Cressi Devices */
        { USB_DEVICE(FTDI_VID, FTDI_CRESSI_PID) },
        /* Brainboxes Devices */
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_001_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_012_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_023_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_034_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_101_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_1_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_2_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_3_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_4_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_5_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_6_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_7_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_8_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_257_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_1_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_2_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_3_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_4_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_313_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_324_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_346_1_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_346_2_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_357_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_606_1_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_606_2_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_606_3_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_701_1_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_701_2_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_1_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_2_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_3_PID) },
        { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_4_PID) },
        /* ekey Devices */
        { USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) },
        /* Infineon Devices */
        { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC1798_PID, 1) },
        { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC2X7_PID, 1) },

        /* GE Healthcare devices */
        { USB_DEVICE(GE_HEALTHCARE_VID, GE_HEALTHCARE_NEMO_TRACKER_PID) },
        /* Active Research (Actisense) devices */
        { USB_DEVICE(FTDI_VID, ACTISENSE_NDC_PID) },
        { USB_DEVICE(FTDI_VID, ACTISENSE_USG_PID) },
        { USB_DEVICE(FTDI_VID, ACTISENSE_NGT_PID) },
        { USB_DEVICE(FTDI_VID, ACTISENSE_NGW_PID) },
        { USB_DEVICE(FTDI_VID, ACTISENSE_D9AC_PID) },
        { USB_DEVICE(FTDI_VID, ACTISENSE_D9AD_PID) },
        { USB_DEVICE(FTDI_VID, ACTISENSE_D9AE_PID) },
        { USB_DEVICE(FTDI_VID, ACTISENSE_D9AF_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEAGAUGE_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEASWITCH_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_NMEA2000_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_ETHERNET_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_WIFI_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_DISPLAY_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_LITE_PID) },
        { USB_DEVICE(FTDI_VID, CHETCO_SEASMART_ANALOG_PID) },
        /* ICP DAS I-756xU devices */
        { USB_DEVICE(ICPDAS_VID, ICPDAS_I7560U_PID) },
        { USB_DEVICE(ICPDAS_VID, ICPDAS_I7561U_PID) },
        { USB_DEVICE(ICPDAS_VID, ICPDAS_I7563U_PID) },
        { USB_DEVICE(WICED_VID, WICED_USB20706V2_PID) },
        { USB_DEVICE(TI_VID, TI_CC3200_LAUNCHPAD_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(CYPRESS_VID, CYPRESS_WICED_BT_USB_PID) },
        { USB_DEVICE(CYPRESS_VID, CYPRESS_WICED_WL_USB_PID) },
        { USB_DEVICE(AIRBUS_DS_VID, AIRBUS_DS_P8GR) },
        /* EZPrototypes devices */
        { USB_DEVICE(EZPROTOTYPES_VID, HJELMSLUND_USB485_ISO_PID) },
        { USB_DEVICE_INTERFACE_NUMBER(UNJO_VID, UNJO_ISODEBUG_V1_PID, 1) },
        /* Sienna devices */
        { USB_DEVICE(FTDI_VID, FTDI_SIENNA_PID) },
        { USB_DEVICE(ECHELON_VID, ECHELON_U20_PID) },
        { }                                     /* Terminating entry */
};

MODULE_DEVICE_TABLE(usb, id_table_combined);

static const char *ftdi_chip_name[] = {
        [SIO] = "SIO",  /* the serial part of FT8U100AX */
        [FT8U232AM] = "FT8U232AM",
        [FT232BM] = "FT232BM",
        [FT2232C] = "FT2232C",
        [FT232RL] = "FT232RL",
        [FT2232H] = "FT2232H",
        [FT4232H] = "FT4232H",
        [FT232H]  = "FT232H",
        [FTX]     = "FT-X"
};


/* Used for TIOCMIWAIT */
#define FTDI_STATUS_B0_MASK     (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
#define FTDI_STATUS_B1_MASK     (FTDI_RS_BI)
/* End TIOCMIWAIT */

/* function prototypes for a FTDI serial converter */
static int  ftdi_sio_probe(struct usb_serial *serial,
                                        const struct usb_device_id *id);
static int  ftdi_sio_port_probe(struct usb_serial_port *port);
static int  ftdi_sio_port_remove(struct usb_serial_port *port);
static int  ftdi_open(struct tty_struct *tty, struct usb_serial_port *port);
static void ftdi_dtr_rts(struct usb_serial_port *port, int on);
static void ftdi_process_read_urb(struct urb *urb);
static int ftdi_prepare_write_buffer(struct usb_serial_port *port,
                                                void *dest, size_t size);
static void ftdi_set_termios(struct tty_struct *tty,
                        struct usb_serial_port *port, struct ktermios *old);
static int  ftdi_tiocmget(struct tty_struct *tty);
static int  ftdi_tiocmset(struct tty_struct *tty,
                        unsigned int set, unsigned int clear);
static int  ftdi_ioctl(struct tty_struct *tty,
                        unsigned int cmd, unsigned long arg);
static int get_serial_info(struct tty_struct *tty,
                                struct serial_struct *ss);
static int set_serial_info(struct tty_struct *tty,
                                struct serial_struct *ss);
static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
static bool ftdi_tx_empty(struct usb_serial_port *port);
static int ftdi_get_modem_status(struct usb_serial_port *port,
                                                unsigned char status[2]);

static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
static unsigned short int ftdi_232am_baud_to_divisor(int baud);
static u32 ftdi_232bm_baud_base_to_divisor(int baud, int base);
static u32 ftdi_232bm_baud_to_divisor(int baud);
static u32 ftdi_2232h_baud_base_to_divisor(int baud, int base);
static u32 ftdi_2232h_baud_to_divisor(int baud);

static struct usb_serial_driver ftdi_sio_device = {
        .driver = {
                .owner =        THIS_MODULE,
                .name =         "ftdi_sio",
        },
        .description =          "FTDI USB Serial Device",
        .id_table =             id_table_combined,
        .num_ports =            1,
        .bulk_in_size =         512,
        .bulk_out_size =        256,
        .probe =                ftdi_sio_probe,
        .port_probe =           ftdi_sio_port_probe,
        .port_remove =          ftdi_sio_port_remove,
        .open =                 ftdi_open,
        .dtr_rts =              ftdi_dtr_rts,
        .throttle =             usb_serial_generic_throttle,
        .unthrottle =           usb_serial_generic_unthrottle,
        .process_read_urb =     ftdi_process_read_urb,
        .prepare_write_buffer = ftdi_prepare_write_buffer,
        .tiocmget =             ftdi_tiocmget,
        .tiocmset =             ftdi_tiocmset,
        .tiocmiwait =           usb_serial_generic_tiocmiwait,
        .get_icount =           usb_serial_generic_get_icount,
        .ioctl =                ftdi_ioctl,
        .get_serial =           get_serial_info,
        .set_serial =           set_serial_info,
        .set_termios =          ftdi_set_termios,
        .break_ctl =            ftdi_break_ctl,
        .tx_empty =             ftdi_tx_empty,
};

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


#define WDR_TIMEOUT 5000 /* default urb timeout */
#define WDR_SHORT_TIMEOUT 1000  /* shorter urb timeout */

/*
 * ***************************************************************************
 * Utility functions
 * ***************************************************************************
 */

static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base)
{
        unsigned short int divisor;
        /* divisor shifted 3 bits to the left */
        int divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud);
        if ((divisor3 & 0x7) == 7)
                divisor3++; /* round x.7/8 up to x+1 */
        divisor = divisor3 >> 3;
        divisor3 &= 0x7;
        if (divisor3 == 1)
                divisor |= 0xc000;
        else if (divisor3 >= 4)
                divisor |= 0x4000;
        else if (divisor3 != 0)
                divisor |= 0x8000;
        else if (divisor == 1)
                divisor = 0;    /* special case for maximum baud rate */
        return divisor;
}

static unsigned short int ftdi_232am_baud_to_divisor(int baud)
{
         return ftdi_232am_baud_base_to_divisor(baud, 48000000);
}

static u32 ftdi_232bm_baud_base_to_divisor(int baud, int base)
{
        static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
        u32 divisor;
        /* divisor shifted 3 bits to the left */
        int divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud);
        divisor = divisor3 >> 3;
        divisor |= (u32)divfrac[divisor3 & 0x7] << 14;
        /* Deal with special cases for highest baud rates. */
        if (divisor == 1)
                divisor = 0;
        else if (divisor == 0x4001)
                divisor = 1;
        return divisor;
}

static u32 ftdi_232bm_baud_to_divisor(int baud)
{
         return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
}

static u32 ftdi_2232h_baud_base_to_divisor(int baud, int base)
{
        static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
        u32 divisor;
        int divisor3;

        /* hi-speed baud rate is 10-bit sampling instead of 16-bit */
        divisor3 = DIV_ROUND_CLOSEST(8 * base, 10 * baud);

        divisor = divisor3 >> 3;
        divisor |= (u32)divfrac[divisor3 & 0x7] << 14;
        /* Deal with special cases for highest baud rates. */
        if (divisor == 1)
                divisor = 0;
        else if (divisor == 0x4001)
                divisor = 1;
        /*
         * Set this bit to turn off a divide by 2.5 on baud rate generator
         * This enables baud rates up to 12Mbaud but cannot reach below 1200
         * baud with this bit set
         */
        divisor |= 0x00020000;
        return divisor;
}

static u32 ftdi_2232h_baud_to_divisor(int baud)
{
         return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
}

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

static int update_mctrl(struct usb_serial_port *port, unsigned int set,
                                                        unsigned int clear)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct device *dev = &port->dev;
        unsigned value;
        int rv;

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

        clear &= ~set;  /* 'set' takes precedence over 'clear' */
        value = 0;
        if (clear & TIOCM_DTR)
                value |= FTDI_SIO_SET_DTR_LOW;
        if (clear & TIOCM_RTS)
                value |= FTDI_SIO_SET_RTS_LOW;
        if (set & TIOCM_DTR)
                value |= FTDI_SIO_SET_DTR_HIGH;
        if (set & TIOCM_RTS)
                value |= FTDI_SIO_SET_RTS_HIGH;
        rv = usb_control_msg(port->serial->dev,
                               usb_sndctrlpipe(port->serial->dev, 0),
                               FTDI_SIO_SET_MODEM_CTRL_REQUEST,
                               FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
                               value, priv->interface,
                               NULL, 0, WDR_TIMEOUT);
        if (rv < 0) {
                dev_dbg(dev, "%s Error from MODEM_CTRL urb: DTR %s, RTS %s\n",
                        __func__,
                        (set & TIOCM_DTR) ? "HIGH" : (clear & TIOCM_DTR) ? "LOW" : "unchanged",
                        (set & TIOCM_RTS) ? "HIGH" : (clear & TIOCM_RTS) ? "LOW" : "unchanged");
                rv = usb_translate_errors(rv);
        } else {
                dev_dbg(dev, "%s - DTR %s, RTS %s\n", __func__,
                        (set & TIOCM_DTR) ? "HIGH" : (clear & TIOCM_DTR) ? "LOW" : "unchanged",
                        (set & TIOCM_RTS) ? "HIGH" : (clear & TIOCM_RTS) ? "LOW" : "unchanged");
                /* FIXME: locking on last_dtr_rts */
                priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
        }
        return rv;
}


static u32 get_ftdi_divisor(struct tty_struct *tty,
                                                struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct device *dev = &port->dev;
        u32 div_value = 0;
        int div_okay = 1;
        int baud;

        baud = tty_get_baud_rate(tty);
        dev_dbg(dev, "%s - tty_get_baud_rate reports speed %d\n", __func__, baud);

        /*
         * Observe deprecated async-compatible custom_divisor hack, update
         * baudrate if needed.
         */
        if (baud == 38400 &&
            ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
             (priv->custom_divisor)) {
                baud = priv->baud_base / priv->custom_divisor;
                dev_dbg(dev, "%s - custom divisor %d sets baud rate to %d\n",
                        __func__, priv->custom_divisor, baud);
        }

        if (!baud)
                baud = 9600;
        switch (priv->chip_type) {
        case SIO: /* SIO chip */
                switch (baud) {
                case 300: div_value = ftdi_sio_b300; break;
                case 600: div_value = ftdi_sio_b600; break;
                case 1200: div_value = ftdi_sio_b1200; break;
                case 2400: div_value = ftdi_sio_b2400; break;
                case 4800: div_value = ftdi_sio_b4800; break;
                case 9600: div_value = ftdi_sio_b9600; break;
                case 19200: div_value = ftdi_sio_b19200; break;
                case 38400: div_value = ftdi_sio_b38400; break;
                case 57600: div_value = ftdi_sio_b57600;  break;
                case 115200: div_value = ftdi_sio_b115200; break;
                } /* baud */
                if (div_value == 0) {
                        dev_dbg(dev, "%s - Baudrate (%d) requested is not supported\n",
                                __func__,  baud);
                        div_value = ftdi_sio_b9600;
                        baud = 9600;
                        div_okay = 0;
                }
                break;
        case FT8U232AM: /* 8U232AM chip */
                if (baud <= 3000000) {
                        div_value = ftdi_232am_baud_to_divisor(baud);
                } else {
                        dev_dbg(dev, "%s - Baud rate too high!\n", __func__);
                        baud = 9600;
                        div_value = ftdi_232am_baud_to_divisor(9600);
                        div_okay = 0;
                }
                break;
        case FT232BM: /* FT232BM chip */
        case FT2232C: /* FT2232C chip */
        case FT232RL: /* FT232RL chip */
        case FTX:     /* FT-X series */
                if (baud <= 3000000) {
                        u16 product_id = le16_to_cpu(
                                port->serial->dev->descriptor.idProduct);
                        if (((product_id == FTDI_NDI_HUC_PID)           ||
                             (product_id == FTDI_NDI_SPECTRA_SCU_PID)   ||
                             (product_id == FTDI_NDI_FUTURE_2_PID)      ||
                             (product_id == FTDI_NDI_FUTURE_3_PID)      ||
                             (product_id == FTDI_NDI_AURORA_SCU_PID))   &&
                            (baud == 19200)) {
                                baud = 1200000;
                        }
                        div_value = ftdi_232bm_baud_to_divisor(baud);
                } else {
                        dev_dbg(dev, "%s - Baud rate too high!\n", __func__);
                        div_value = ftdi_232bm_baud_to_divisor(9600);
                        div_okay = 0;
                        baud = 9600;
                }
                break;
        case FT2232H: /* FT2232H chip */
        case FT4232H: /* FT4232H chip */
        case FT232H:  /* FT232H chip */
                if ((baud <= 12000000) && (baud >= 1200)) {
                        div_value = ftdi_2232h_baud_to_divisor(baud);
                } else if (baud < 1200) {
                        div_value = ftdi_232bm_baud_to_divisor(baud);
                } else {
                        dev_dbg(dev, "%s - Baud rate too high!\n", __func__);
                        div_value = ftdi_232bm_baud_to_divisor(9600);
                        div_okay = 0;
                        baud = 9600;
                }
                break;
        } /* priv->chip_type */

        if (div_okay) {
                dev_dbg(dev, "%s - Baud rate set to %d (divisor 0x%lX) on chip %s\n",
                        __func__, baud, (unsigned long)div_value,
                        ftdi_chip_name[priv->chip_type]);
        }

        tty_encode_baud_rate(tty, baud, baud);
        return div_value;
}

static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        u16 value;
        u16 index;
        u32 index_value;
        int rv;

        index_value = get_ftdi_divisor(tty, port);
        value = (u16)index_value;
        index = (u16)(index_value >> 16);
        if ((priv->chip_type == FT2232C) || (priv->chip_type == FT2232H) ||
                (priv->chip_type == FT4232H) || (priv->chip_type == FT232H)) {
                /* Probably the BM type needs the MSB of the encoded fractional
                 * divider also moved like for the chips above. Any infos? */
                index = (u16)((index << 8) | priv->interface);
        }

        rv = usb_control_msg(port->serial->dev,
                            usb_sndctrlpipe(port->serial->dev, 0),
                            FTDI_SIO_SET_BAUDRATE_REQUEST,
                            FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
                            value, index,
                            NULL, 0, WDR_SHORT_TIMEOUT);
        return rv;
}

static int write_latency_timer(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_device *udev = port->serial->dev;
        int rv;
        int l = priv->latency;

        if (priv->chip_type == SIO || priv->chip_type == FT8U232AM)
                return -EINVAL;

        if (priv->flags & ASYNC_LOW_LATENCY)
                l = 1;

        dev_dbg(&port->dev, "%s: setting latency timer = %i\n", __func__, l);

        rv = usb_control_msg(udev,
                             usb_sndctrlpipe(udev, 0),
                             FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
                             FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
                             l, priv->interface,
                             NULL, 0, WDR_TIMEOUT);
        if (rv < 0)
                dev_err(&port->dev, "Unable to write latency timer: %i\n", rv);
        return rv;
}

static int _read_latency_timer(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_device *udev = port->serial->dev;
        unsigned char *buf;
        int rv;

        buf = kmalloc(1, GFP_KERNEL);
        if (!buf)
                return -ENOMEM;

        rv = usb_control_msg(udev,
                             usb_rcvctrlpipe(udev, 0),
                             FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
                             FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
                             0, priv->interface,
                             buf, 1, WDR_TIMEOUT);
        if (rv < 1) {
                if (rv >= 0)
                        rv = -EIO;
        } else {
                rv = buf[0];
        }

        kfree(buf);

        return rv;
}

static int read_latency_timer(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        int rv;

        if (priv->chip_type == SIO || priv->chip_type == FT8U232AM)
                return -EINVAL;

        rv = _read_latency_timer(port);
        if (rv < 0) {
                dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
                return rv;
        }

        priv->latency = rv;

        return 0;
}

static int get_serial_info(struct tty_struct *tty,
                                struct serial_struct *ss)
{
        struct usb_serial_port *port = tty->driver_data;
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        ss->flags = priv->flags;
        ss->baud_base = priv->baud_base;
        ss->custom_divisor = priv->custom_divisor;
        return 0;
}

static int set_serial_info(struct tty_struct *tty,
        struct serial_struct *ss)
{
        struct usb_serial_port *port = tty->driver_data;
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct ftdi_private old_priv;

        mutex_lock(&priv->cfg_lock);
        old_priv = *priv;

        /* Do error checking and permission checking */

        if (!capable(CAP_SYS_ADMIN)) {
                if ((ss->flags ^ priv->flags) & ~ASYNC_USR_MASK) {
                        mutex_unlock(&priv->cfg_lock);
                        return -EPERM;
                }
                priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
                               (ss->flags & ASYNC_USR_MASK));
                priv->custom_divisor = ss->custom_divisor;
                goto check_and_exit;
        }

        if (ss->baud_base != priv->baud_base) {
                mutex_unlock(&priv->cfg_lock);
                return -EINVAL;
        }

        /* Make the changes - these are privileged changes! */

        priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
                                        (ss->flags & ASYNC_FLAGS));
        priv->custom_divisor = ss->custom_divisor;

check_and_exit:
        write_latency_timer(port);

        if ((priv->flags ^ old_priv.flags) & ASYNC_SPD_MASK ||
                        ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST &&
                         priv->custom_divisor != old_priv.custom_divisor)) {

                /* warn about deprecation unless clearing */
                if (priv->flags & ASYNC_SPD_MASK)
                        dev_warn_ratelimited(&port->dev, "use of SPD flags is deprecated\n");

                change_speed(tty, port);
        }
        mutex_unlock(&priv->cfg_lock);
        return 0;
}

static int get_lsr_info(struct usb_serial_port *port,
                        unsigned int __user *retinfo)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        unsigned int result = 0;

        if (priv->transmit_empty)
                result = TIOCSER_TEMT;

        if (copy_to_user(retinfo, &result, sizeof(unsigned int)))
                return -EFAULT;
        return 0;
}


/* Determine type of FTDI chip based on USB config and descriptor. */
static void ftdi_determine_type(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_serial *serial = port->serial;
        struct usb_device *udev = serial->dev;
        unsigned version;
        unsigned interfaces;

        /* Assume it is not the original SIO device for now. */
        priv->baud_base = 48000000 / 2;

        version = le16_to_cpu(udev->descriptor.bcdDevice);
        interfaces = udev->actconfig->desc.bNumInterfaces;
        dev_dbg(&port->dev, "%s: bcdDevice = 0x%x, bNumInterfaces = %u\n", __func__,
                version, interfaces);
        if (interfaces > 1) {
                int inter;

                /* Multiple interfaces.*/
                if (version == 0x0800) {
                        priv->chip_type = FT4232H;
                        /* Hi-speed - baud clock runs at 120MHz */
                        priv->baud_base = 120000000 / 2;
                } else if (version == 0x0700) {
                        priv->chip_type = FT2232H;
                        /* Hi-speed - baud clock runs at 120MHz */
                        priv->baud_base = 120000000 / 2;
                } else
                        priv->chip_type = FT2232C;

                /* Determine interface code. */
                inter = serial->interface->altsetting->desc.bInterfaceNumber;
                if (inter == 0) {
                        priv->interface = INTERFACE_A;
                } else  if (inter == 1) {
                        priv->interface = INTERFACE_B;
                } else  if (inter == 2) {
                        priv->interface = INTERFACE_C;
                } else  if (inter == 3) {
                        priv->interface = INTERFACE_D;
                }
                /* BM-type devices have a bug where bcdDevice gets set
                 * to 0x200 when iSerialNumber is 0.  */
                if (version < 0x500) {
                        dev_dbg(&port->dev,
                                "%s: something fishy - bcdDevice too low for multi-interface device\n",
                                __func__);
                }
        } else if (version < 0x200) {
                /* Old device.  Assume it's the original SIO. */
                priv->chip_type = SIO;
                priv->baud_base = 12000000 / 16;
        } else if (version < 0x400) {
                /* Assume it's an FT8U232AM (or FT8U245AM) */
                priv->chip_type = FT8U232AM;
                /*
                 * It might be a BM type because of the iSerialNumber bug.
                 * If iSerialNumber==0 and the latency timer is readable,
                 * assume it is BM type.
                 */
                if (udev->descriptor.iSerialNumber == 0 &&
                                _read_latency_timer(port) >= 0) {
                        dev_dbg(&port->dev,
                                "%s: has latency timer so not an AM type\n",
                                __func__);
                        priv->chip_type = FT232BM;
                }
        } else if (version < 0x600) {
                /* Assume it's an FT232BM (or FT245BM) */
                priv->chip_type = FT232BM;
        } else if (version < 0x900) {
                /* Assume it's an FT232RL */
                priv->chip_type = FT232RL;
        } else if (version < 0x1000) {
                /* Assume it's an FT232H */
                priv->chip_type = FT232H;
        } else {
                /* Assume it's an FT-X series device */
                priv->chip_type = FTX;
        }

        dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
}


/*
 * Determine the maximum packet size for the device. This depends on the chip
 * type and the USB host capabilities. The value should be obtained from the
 * device descriptor as the chip will use the appropriate values for the host.
 */
static void ftdi_set_max_packet_size(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_interface *interface = port->serial->interface;
        struct usb_endpoint_descriptor *ep_desc;
        unsigned num_endpoints;
        unsigned i;

        num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
        if (!num_endpoints)
                return;

        /*
         * NOTE: Some customers have programmed FT232R/FT245R devices
         * with an endpoint size of 0 - not good. In this case, we
         * want to override the endpoint descriptor setting and use a
         * value of 64 for wMaxPacketSize.
         */
        for (i = 0; i < num_endpoints; i++) {
                ep_desc = &interface->cur_altsetting->endpoint[i].desc;
                if (!ep_desc->wMaxPacketSize) {
                        ep_desc->wMaxPacketSize = cpu_to_le16(0x40);
                        dev_warn(&port->dev, "Overriding wMaxPacketSize on endpoint %d\n",
                                        usb_endpoint_num(ep_desc));
                }
        }

        /* Set max packet size based on last descriptor. */
        priv->max_packet_size = usb_endpoint_maxp(ep_desc);
}


/*
 * ***************************************************************************
 * Sysfs Attribute
 * ***************************************************************************
 */

static ssize_t latency_timer_show(struct device *dev,
                                  struct device_attribute *attr, char *buf)
{
        struct usb_serial_port *port = to_usb_serial_port(dev);
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        if (priv->flags & ASYNC_LOW_LATENCY)
                return sprintf(buf, "1\n");
        else
                return sprintf(buf, "%i\n", priv->latency);
}

/* Write a new value of the latency timer, in units of milliseconds. */
static ssize_t latency_timer_store(struct device *dev,
                                   struct device_attribute *attr,
                                   const char *valbuf, size_t count)
{
        struct usb_serial_port *port = to_usb_serial_port(dev);
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        u8 v;
        int rv;

        if (kstrtou8(valbuf, 10, &v))
                return -EINVAL;

        priv->latency = v;
        rv = write_latency_timer(port);
        if (rv < 0)
                return -EIO;
        return count;
}
static DEVICE_ATTR_RW(latency_timer);

/* Write an event character directly to the FTDI register.  The ASCII
   value is in the low 8 bits, with the enable bit in the 9th bit. */
static ssize_t event_char_store(struct device *dev,
        struct device_attribute *attr, const char *valbuf, size_t count)
{
        struct usb_serial_port *port = to_usb_serial_port(dev);
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_device *udev = port->serial->dev;
        unsigned int v;
        int rv;

        if (kstrtouint(valbuf, 0, &v) || v >= 0x200)
                return -EINVAL;

        dev_dbg(&port->dev, "%s: setting event char = 0x%03x\n", __func__, v);

        rv = usb_control_msg(udev,
                             usb_sndctrlpipe(udev, 0),
                             FTDI_SIO_SET_EVENT_CHAR_REQUEST,
                             FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
                             v, priv->interface,
                             NULL, 0, WDR_TIMEOUT);
        if (rv < 0) {
                dev_dbg(&port->dev, "Unable to write event character: %i\n", rv);
                return -EIO;
        }

        return count;
}
static DEVICE_ATTR_WO(event_char);

static int create_sysfs_attrs(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        int retval = 0;

        /* XXX I've no idea if the original SIO supports the event_char
         * sysfs parameter, so I'm playing it safe.  */
        if (priv->chip_type != SIO) {
                dev_dbg(&port->dev, "sysfs attributes for %s\n", ftdi_chip_name[priv->chip_type]);
                retval = device_create_file(&port->dev, &dev_attr_event_char);
                if ((!retval) &&
                    (priv->chip_type == FT232BM ||
                     priv->chip_type == FT2232C ||
                     priv->chip_type == FT232RL ||
                     priv->chip_type == FT2232H ||
                     priv->chip_type == FT4232H ||
                     priv->chip_type == FT232H ||
                     priv->chip_type == FTX)) {
                        retval = device_create_file(&port->dev,
                                                    &dev_attr_latency_timer);
                }
        }
        return retval;
}

static void remove_sysfs_attrs(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        /* XXX see create_sysfs_attrs */
        if (priv->chip_type != SIO) {
                device_remove_file(&port->dev, &dev_attr_event_char);
                if (priv->chip_type == FT232BM ||
                    priv->chip_type == FT2232C ||
                    priv->chip_type == FT232RL ||
                    priv->chip_type == FT2232H ||
                    priv->chip_type == FT4232H ||
                    priv->chip_type == FT232H ||
                    priv->chip_type == FTX) {
                        device_remove_file(&port->dev, &dev_attr_latency_timer);
                }
        }

}

#ifdef CONFIG_GPIOLIB

static int ftdi_set_bitmode(struct usb_serial_port *port, u8 mode)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_serial *serial = port->serial;
        int result;
        u16 val;

        result = usb_autopm_get_interface(serial->interface);
        if (result)
                return result;

        val = (mode << 8) | (priv->gpio_output << 4) | priv->gpio_value;
        result = usb_control_msg(serial->dev,
                                 usb_sndctrlpipe(serial->dev, 0),
                                 FTDI_SIO_SET_BITMODE_REQUEST,
                                 FTDI_SIO_SET_BITMODE_REQUEST_TYPE, val,
                                 priv->interface, NULL, 0, WDR_TIMEOUT);
        if (result < 0) {
                dev_err(&serial->interface->dev,
                        "bitmode request failed for value 0x%04x: %d\n",
                        val, result);
        }

        usb_autopm_put_interface(serial->interface);

        return result;
}

static int ftdi_set_cbus_pins(struct usb_serial_port *port)
{
        return ftdi_set_bitmode(port, FTDI_SIO_BITMODE_CBUS);
}

static int ftdi_exit_cbus_mode(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        priv->gpio_output = 0;
        priv->gpio_value = 0;
        return ftdi_set_bitmode(port, FTDI_SIO_BITMODE_RESET);
}

static int ftdi_gpio_request(struct gpio_chip *gc, unsigned int offset)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        int result;

        if (priv->gpio_altfunc & BIT(offset))
                return -ENODEV;

        mutex_lock(&priv->gpio_lock);
        if (!priv->gpio_used) {
                /* Set default pin states, as we cannot get them from device */
                priv->gpio_output = 0x00;
                priv->gpio_value = 0x00;
                result = ftdi_set_cbus_pins(port);
                if (result) {
                        mutex_unlock(&priv->gpio_lock);
                        return result;
                }

                priv->gpio_used = true;
        }
        mutex_unlock(&priv->gpio_lock);

        return 0;
}

static int ftdi_read_cbus_pins(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_serial *serial = port->serial;
        unsigned char *buf;
        int result;

        result = usb_autopm_get_interface(serial->interface);
        if (result)
                return result;

        buf = kmalloc(1, GFP_KERNEL);
        if (!buf) {
                usb_autopm_put_interface(serial->interface);
                return -ENOMEM;
        }

        result = usb_control_msg(serial->dev,
                                 usb_rcvctrlpipe(serial->dev, 0),
                                 FTDI_SIO_READ_PINS_REQUEST,
                                 FTDI_SIO_READ_PINS_REQUEST_TYPE, 0,
                                 priv->interface, buf, 1, WDR_TIMEOUT);
        if (result < 1) {
                if (result >= 0)
                        result = -EIO;
        } else {
                result = buf[0];
        }

        kfree(buf);
        usb_autopm_put_interface(serial->interface);

        return result;
}

static int ftdi_gpio_get(struct gpio_chip *gc, unsigned int gpio)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        int result;

        result = ftdi_read_cbus_pins(port);
        if (result < 0)
                return result;

        return !!(result & BIT(gpio));
}

static void ftdi_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        mutex_lock(&priv->gpio_lock);

        if (value)
                priv->gpio_value |= BIT(gpio);
        else
                priv->gpio_value &= ~BIT(gpio);

        ftdi_set_cbus_pins(port);

        mutex_unlock(&priv->gpio_lock);
}

static int ftdi_gpio_get_multiple(struct gpio_chip *gc, unsigned long *mask,
                                        unsigned long *bits)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        int result;

        result = ftdi_read_cbus_pins(port);
        if (result < 0)
                return result;

        *bits = result & *mask;

        return 0;
}

static void ftdi_gpio_set_multiple(struct gpio_chip *gc, unsigned long *mask,
                                        unsigned long *bits)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        mutex_lock(&priv->gpio_lock);

        priv->gpio_value &= ~(*mask);
        priv->gpio_value |= *bits & *mask;
        ftdi_set_cbus_pins(port);

        mutex_unlock(&priv->gpio_lock);
}

static int ftdi_gpio_direction_get(struct gpio_chip *gc, unsigned int gpio)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        return !(priv->gpio_output & BIT(gpio));
}

static int ftdi_gpio_direction_input(struct gpio_chip *gc, unsigned int gpio)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        int result;

        mutex_lock(&priv->gpio_lock);

        priv->gpio_output &= ~BIT(gpio);
        result = ftdi_set_cbus_pins(port);

        mutex_unlock(&priv->gpio_lock);

        return result;
}

static int ftdi_gpio_direction_output(struct gpio_chip *gc, unsigned int gpio,
                                        int value)
{
        struct usb_serial_port *port = gpiochip_get_data(gc);
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        int result;

        mutex_lock(&priv->gpio_lock);

        priv->gpio_output |= BIT(gpio);
        if (value)
                priv->gpio_value |= BIT(gpio);
        else
                priv->gpio_value &= ~BIT(gpio);

        result = ftdi_set_cbus_pins(port);

        mutex_unlock(&priv->gpio_lock);

        return result;
}

static int ftdi_read_eeprom(struct usb_serial *serial, void *dst, u16 addr,
                                u16 nbytes)
{
        int read = 0;

        if (addr % 2 != 0)
                return -EINVAL;
        if (nbytes % 2 != 0)
                return -EINVAL;

        /* Read EEPROM two bytes at a time */
        while (read < nbytes) {
                int rv;

                rv = usb_control_msg(serial->dev,
                                     usb_rcvctrlpipe(serial->dev, 0),
                                     FTDI_SIO_READ_EEPROM_REQUEST,
                                     FTDI_SIO_READ_EEPROM_REQUEST_TYPE,
                                     0, (addr + read) / 2, dst + read, 2,
                                     WDR_TIMEOUT);
                if (rv < 2) {
                        if (rv >= 0)
                                return -EIO;
                        else
                                return rv;
                }

                read += rv;
        }

        return 0;
}

static int ftdi_gpio_init_ft232h(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        u16 cbus_config;
        u8 *buf;
        int ret;
        int i;

        buf = kmalloc(4, GFP_KERNEL);
        if (!buf)
                return -ENOMEM;

        ret = ftdi_read_eeprom(port->serial, buf, 0x1a, 4);
        if (ret < 0)
                goto out_free;

        /*
         * FT232H CBUS Memory Map
         *
         * 0x1a: X- (upper nibble -> AC5)
         * 0x1b: -X (lower nibble -> AC6)
         * 0x1c: XX (upper nibble -> AC9 | lower nibble -> AC8)
         */
        cbus_config = buf[2] << 8 | (buf[1] & 0xf) << 4 | (buf[0] & 0xf0) >> 4;

        priv->gc.ngpio = 4;
        priv->gpio_altfunc = 0xff;

        for (i = 0; i < priv->gc.ngpio; ++i) {
                if ((cbus_config & 0xf) == FTDI_FTX_CBUS_MUX_GPIO)
                        priv->gpio_altfunc &= ~BIT(i);
                cbus_config >>= 4;
        }

out_free:
        kfree(buf);

        return ret;
}

static int ftdi_gpio_init_ft232r(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        u16 cbus_config;
        u8 *buf;
        int ret;
        int i;

        buf = kmalloc(2, GFP_KERNEL);
        if (!buf)
                return -ENOMEM;

        ret = ftdi_read_eeprom(port->serial, buf, 0x14, 2);
        if (ret < 0)
                goto out_free;

        cbus_config = le16_to_cpup((__le16 *)buf);
        dev_dbg(&port->dev, "cbus_config = 0x%04x\n", cbus_config);

        priv->gc.ngpio = 4;

        priv->gpio_altfunc = 0xff;
        for (i = 0; i < priv->gc.ngpio; ++i) {
                if ((cbus_config & 0xf) == FTDI_FT232R_CBUS_MUX_GPIO)
                        priv->gpio_altfunc &= ~BIT(i);
                cbus_config >>= 4;
        }
out_free:
        kfree(buf);

        return ret;
}

static int ftdi_gpio_init_ftx(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_serial *serial = port->serial;
        const u16 cbus_cfg_addr = 0x1a;
        const u16 cbus_cfg_size = 4;
        u8 *cbus_cfg_buf;
        int result;
        u8 i;

        cbus_cfg_buf = kmalloc(cbus_cfg_size, GFP_KERNEL);
        if (!cbus_cfg_buf)
                return -ENOMEM;

        result = ftdi_read_eeprom(serial, cbus_cfg_buf,
                                  cbus_cfg_addr, cbus_cfg_size);
        if (result < 0)
                goto out_free;

        /* FIXME: FT234XD alone has 1 GPIO, but how to recognize this IC? */
        priv->gc.ngpio = 4;

        /* Determine which pins are configured for CBUS bitbanging */
        priv->gpio_altfunc = 0xff;
        for (i = 0; i < priv->gc.ngpio; ++i) {
                if (cbus_cfg_buf[i] == FTDI_FTX_CBUS_MUX_GPIO)
                        priv->gpio_altfunc &= ~BIT(i);
        }

out_free:
        kfree(cbus_cfg_buf);

        return result;
}

static int ftdi_gpio_init(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct usb_serial *serial = port->serial;
        int result;

        switch (priv->chip_type) {
        case FT232H:
                result = ftdi_gpio_init_ft232h(port);
                break;
        case FT232RL:
                result = ftdi_gpio_init_ft232r(port);
                break;
        case FTX:
                result = ftdi_gpio_init_ftx(port);
                break;
        default:
                return 0;
        }

        if (result < 0)
                return result;

        mutex_init(&priv->gpio_lock);

        priv->gc.label = "ftdi-cbus";
        priv->gc.request = ftdi_gpio_request;
        priv->gc.get_direction = ftdi_gpio_direction_get;
        priv->gc.direction_input = ftdi_gpio_direction_input;
        priv->gc.direction_output = ftdi_gpio_direction_output;
        priv->gc.get = ftdi_gpio_get;
        priv->gc.set = ftdi_gpio_set;
        priv->gc.get_multiple = ftdi_gpio_get_multiple;
        priv->gc.set_multiple = ftdi_gpio_set_multiple;
        priv->gc.owner = THIS_MODULE;
        priv->gc.parent = &serial->interface->dev;
        priv->gc.base = -1;
        priv->gc.can_sleep = true;

        result = gpiochip_add_data(&priv->gc, port);
        if (!result)
                priv->gpio_registered = true;

        return result;
}

static void ftdi_gpio_remove(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        if (priv->gpio_registered) {
                gpiochip_remove(&priv->gc);
                priv->gpio_registered = false;
        }

        if (priv->gpio_used) {
                /* Exiting CBUS-mode does not reset pin states. */
                ftdi_exit_cbus_mode(port);
                priv->gpio_used = false;
        }
}

#else

static int ftdi_gpio_init(struct usb_serial_port *port)
{
        return 0;
}

static void ftdi_gpio_remove(struct usb_serial_port *port) { }

#endif  /* CONFIG_GPIOLIB */

/*
 * ***************************************************************************
 * FTDI driver specific functions
 * ***************************************************************************
 */

/* Probe function to check for special devices */
static int ftdi_sio_probe(struct usb_serial *serial,
                                        const struct usb_device_id *id)
{
        const struct ftdi_sio_quirk *quirk =
                                (struct ftdi_sio_quirk *)id->driver_info;

        if (quirk && quirk->probe) {
                int ret = quirk->probe(serial);
                if (ret != 0)
                        return ret;
        }

        usb_set_serial_data(serial, (void *)id->driver_info);

        return 0;
}

static int ftdi_sio_port_probe(struct usb_serial_port *port)
{
        struct ftdi_private *priv;
        const struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial);
        int result;

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

        mutex_init(&priv->cfg_lock);

        if (quirk && quirk->port_probe)
                quirk->port_probe(priv);

        usb_set_serial_port_data(port, priv);

        ftdi_determine_type(port);
        ftdi_set_max_packet_size(port);
        if (read_latency_timer(port) < 0)
                priv->latency = 16;
        write_latency_timer(port);
        create_sysfs_attrs(port);

        result = ftdi_gpio_init(port);
        if (result < 0) {
                dev_err(&port->serial->interface->dev,
                        "GPIO initialisation failed: %d\n",
                        result);
        }

        return 0;
}

/* Setup for the USB-UIRT device, which requires hardwired
 * baudrate (38400 gets mapped to 312500) */
/* Called from usbserial:serial_probe */
static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
{
        priv->flags |= ASYNC_SPD_CUST;
        priv->custom_divisor = 77;
        priv->force_baud = 38400;
}

/* Setup for the HE-TIRA1 device, which requires hardwired
 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled.  */

static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
{
        priv->flags |= ASYNC_SPD_CUST;
        priv->custom_divisor = 240;
        priv->force_baud = 38400;
        priv->force_rtscts = 1;
}

/*
 * Module parameter to control latency timer for NDI FTDI-based USB devices.
 * If this value is not set in /etc/modprobe.d/ its value will be set
 * to 1ms.
 */
static int ndi_latency_timer = 1;

/* Setup for the NDI FTDI-based USB devices, which requires hardwired
 * baudrate (19200 gets mapped to 1200000).
 *
 * Called from usbserial:serial_probe.
 */
static int ftdi_NDI_device_setup(struct usb_serial *serial)
{
        struct usb_device *udev = serial->dev;
        int latency = ndi_latency_timer;

        if (latency == 0)
                latency = 1;
        if (latency > 99)
                latency = 99;

        dev_dbg(&udev->dev, "%s setting NDI device latency to %d\n", __func__, latency);
        dev_info(&udev->dev, "NDI device with a latency value of %d\n", latency);

        /* FIXME: errors are not returned */
        usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
                                FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
                                FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
                                latency, 0, NULL, 0, WDR_TIMEOUT);
        return 0;
}

/*
 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
 * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
 * userspace using openocd.
 */
static int ftdi_jtag_probe(struct usb_serial *serial)
{
        struct usb_device *udev = serial->dev;
        struct usb_interface *interface = serial->interface;

        if (interface == udev->actconfig->interface[0]) {
                dev_info(&udev->dev,
                         "Ignoring serial port reserved for JTAG\n");
                return -ENODEV;
        }

        return 0;
}

static int ftdi_8u2232c_probe(struct usb_serial *serial)
{
        struct usb_device *udev = serial->dev;

        if (udev->manufacturer && !strcmp(udev->manufacturer, "CALAO Systems"))
                return ftdi_jtag_probe(serial);

        if (udev->product &&
                (!strcmp(udev->product, "Arrow USB Blaster") ||
                 !strcmp(udev->product, "BeagleBone/XDS100V2") ||
                 !strcmp(udev->product, "SNAP Connect E10")))
                return ftdi_jtag_probe(serial);

        return 0;
}

/*
 * First two ports on JTAG adaptors using an FT4232 such as STMicroelectronics's
 * ST Micro Connect Lite are reserved for JTAG or other non-UART interfaces and
 * can be accessed from userspace.
 * The next two ports are enabled as UARTs by default, where port 2 is
 * a conventional RS-232 UART.
 */
static int ftdi_stmclite_probe(struct usb_serial *serial)
{
        struct usb_device *udev = serial->dev;
        struct usb_interface *interface = serial->interface;

        if (interface == udev->actconfig->interface[0] ||
            interface == udev->actconfig->interface[1]) {
                dev_info(&udev->dev, "Ignoring serial port reserved for JTAG\n");
                return -ENODEV;
        }

        return 0;
}

static int ftdi_sio_port_remove(struct usb_serial_port *port)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        ftdi_gpio_remove(port);

        remove_sysfs_attrs(port);

        kfree(priv);

        return 0;
}

static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
{
        struct usb_device *dev = port->serial->dev;
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        /* No error checking for this (will get errors later anyway) */
        /* See ftdi_sio.h for description of what is reset */
        usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                        FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
                        FTDI_SIO_RESET_SIO,
                        priv->interface, NULL, 0, WDR_TIMEOUT);

        /* Termios defaults are set by usb_serial_init. We don't change
           port->tty->termios - this would lose speed settings, etc.
           This is same behaviour as serial.c/rs_open() - Kuba */

        /* ftdi_set_termios  will send usb control messages */
        if (tty)
                ftdi_set_termios(tty, port, NULL);

        return usb_serial_generic_open(tty, port);
}

static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);

        /* Disable flow control */
        if (!on) {
                if (usb_control_msg(port->serial->dev,
                            usb_sndctrlpipe(port->serial->dev, 0),
                            FTDI_SIO_SET_FLOW_CTRL_REQUEST,
                            FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
                            0, priv->interface, NULL, 0,
                            WDR_TIMEOUT) < 0) {
                        dev_err(&port->dev, "error from flowcontrol urb\n");
                }
        }
        /* drop RTS and DTR */
        if (on)
                set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
        else
                clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
}

/* The SIO requires the first byte to have:
 *  B0 1
 *  B1 0
 *  B2..7 length of message excluding byte 0
 *
 * The new devices do not require this byte
 */
static int ftdi_prepare_write_buffer(struct usb_serial_port *port,
                                                void *dest, size_t size)
{
        struct ftdi_private *priv;
        int count;
        unsigned long flags;

        priv = usb_get_serial_port_data(port);

        if (priv->chip_type == SIO) {
                unsigned char *buffer = dest;
                int i, len, c;

                count = 0;
                spin_lock_irqsave(&port->lock, flags);
                for (i = 0; i < size - 1; i += priv->max_packet_size) {
                        len = min_t(int, size - i, priv->max_packet_size) - 1;
                        c = kfifo_out(&port->write_fifo, &buffer[i + 1], len);
                        if (!c)
                                break;
                        port->icount.tx += c;
                        buffer[i] = (c << 2) + 1;
                        count += c + 1;
                }
                spin_unlock_irqrestore(&port->lock, flags);
        } else {
                count = kfifo_out_locked(&port->write_fifo, dest, size,
                                                                &port->lock);
                port->icount.tx += count;
        }

        return count;
}

#define FTDI_RS_ERR_MASK (FTDI_RS_BI | FTDI_RS_PE | FTDI_RS_FE | FTDI_RS_OE)

static int ftdi_process_packet(struct usb_serial_port *port,
                struct ftdi_private *priv, char *packet, int len)
{
        int i;
        char status;
        char flag;
        char *ch;

        if (len < 2) {
                dev_dbg(&port->dev, "malformed packet\n");
                return 0;
        }

        /* Compare new line status to the old one, signal if different/
           N.B. packet may be processed more than once, but differences
           are only processed once.  */
        status = packet[0] & FTDI_STATUS_B0_MASK;
        if (status != priv->prev_status) {
                char diff_status = status ^ priv->prev_status;

                if (diff_status & FTDI_RS0_CTS)
                        port->icount.cts++;
                if (diff_status & FTDI_RS0_DSR)
                        port->icount.dsr++;
                if (diff_status & FTDI_RS0_RI)
                        port->icount.rng++;
                if (diff_status & FTDI_RS0_RLSD) {
                        struct tty_struct *tty;

                        port->icount.dcd++;
                        tty = tty_port_tty_get(&port->port);
                        if (tty)
                                usb_serial_handle_dcd_change(port, tty,
                                                status & FTDI_RS0_RLSD);
                        tty_kref_put(tty);
                }

                wake_up_interruptible(&port->port.delta_msr_wait);
                priv->prev_status = status;
        }

        /* save if the transmitter is empty or not */
        if (packet[1] & FTDI_RS_TEMT)
                priv->transmit_empty = 1;
        else
                priv->transmit_empty = 0;

        len -= 2;
        if (!len)
                return 0;       /* status only */

        /*
         * Break and error status must only be processed for packets with
         * data payload to avoid over-reporting.
         */
        flag = TTY_NORMAL;
        if (packet[1] & FTDI_RS_ERR_MASK) {
                /* Break takes precedence over parity, which takes precedence
                 * over framing errors */
                if (packet[1] & FTDI_RS_BI) {
                        flag = TTY_BREAK;
                        port->icount.brk++;
                        usb_serial_handle_break(port);
                } else if (packet[1] & FTDI_RS_PE) {
                        flag = TTY_PARITY;
                        port->icount.parity++;
                } else if (packet[1] & FTDI_RS_FE) {
                        flag = TTY_FRAME;
                        port->icount.frame++;
                }
                /* Overrun is special, not associated with a char */
                if (packet[1] & FTDI_RS_OE) {
                        port->icount.overrun++;
                        tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
                }
        }

        port->icount.rx += len;
        ch = packet + 2;

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

        return len;
}

static void ftdi_process_read_urb(struct urb *urb)
{
        struct usb_serial_port *port = urb->context;
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        char *data = (char *)urb->transfer_buffer;
        int i;
        int len;
        int count = 0;

        for (i = 0; i < urb->actual_length; i += priv->max_packet_size) {
                len = min_t(int, urb->actual_length - i, priv->max_packet_size);
                count += ftdi_process_packet(port, priv, &data[i], len);
        }

        if (count)
                tty_flip_buffer_push(&port->port);
}

static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
{
        struct usb_serial_port *port = tty->driver_data;
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        u16 value;

        /* 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_value NEVER has the break bit set in it */

        if (break_state)
                value = priv->last_set_data_value | FTDI_SIO_SET_BREAK;
        else
                value = priv->last_set_data_value;

        if (usb_control_msg(port->serial->dev,
                        usb_sndctrlpipe(port->serial->dev, 0),
                        FTDI_SIO_SET_DATA_REQUEST,
                        FTDI_SIO_SET_DATA_REQUEST_TYPE,
                        value , priv->interface,
                        NULL, 0, WDR_TIMEOUT) < 0) {
                dev_err(&port->dev, "%s FAILED to enable/disable break state (state was %d)\n",
                        __func__, break_state);
        }

        dev_dbg(&port->dev, "%s break state is %d - urb is %d\n", __func__,
                break_state, value);

}

static bool ftdi_tx_empty(struct usb_serial_port *port)
{
        unsigned char buf[2];
        int ret;

        ret = ftdi_get_modem_status(port, buf);
        if (ret == 2) {
                if (!(buf[1] & FTDI_RS_TEMT))
                        return false;
        }

        return true;
}

/* old_termios contains the original termios settings and tty->termios contains
 * the new setting to be used
 * WARNING: set_termios calls this with old_termios in kernel space
 */
static void ftdi_set_termios(struct tty_struct *tty,
                struct usb_serial_port *port, struct ktermios *old_termios)
{
        struct usb_device *dev = port->serial->dev;
        struct device *ddev = &port->dev;
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct ktermios *termios = &tty->termios;
        unsigned int cflag = termios->c_cflag;
        u16 value, index;
        int ret;

        /* Force baud rate if this device requires it, unless it is set to
           B0. */
        if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) {
                dev_dbg(ddev, "%s: forcing baud rate for this device\n", __func__);
                tty_encode_baud_rate(tty, priv->force_baud,
                                        priv->force_baud);
        }

        /* Force RTS-CTS if this device requires it. */
        if (priv->force_rtscts) {
                dev_dbg(ddev, "%s: forcing rtscts for this device\n", __func__);
                termios->c_cflag |= CRTSCTS;
        }

        /*
         * All FTDI UART chips are limited to CS7/8. We shouldn't pretend to
         * support CS5/6 and revert the CSIZE setting instead.
         *
         * CS5 however is used to control some smartcard readers which abuse
         * this limitation to switch modes. Original FTDI chips fall back to
         * eight data bits.
         *
         * TODO: Implement a quirk to only allow this with mentioned
         *       readers. One I know of (Argolis Smartreader V1)
         *       returns "USB smartcard server" as iInterface string.
         *       The vendor didn't bother with a custom VID/PID of
         *       course.
         */
        if (C_CSIZE(tty) == CS6) {
                dev_warn(ddev, "requested CSIZE setting not supported\n");

                termios->c_cflag &= ~CSIZE;
                if (old_termios)
                        termios->c_cflag |= old_termios->c_cflag & CSIZE;
                else
                        termios->c_cflag |= CS8;
        }

        cflag = termios->c_cflag;

        if (!old_termios)
                goto no_skip;

        if (old_termios->c_cflag == termios->c_cflag
            && old_termios->c_ispeed == termios->c_ispeed
            && old_termios->c_ospeed == termios->c_ospeed)
                goto no_c_cflag_changes;

        /* NOTE These routines can get interrupted by
           ftdi_sio_read_bulk_callback  - need to examine what this means -
           don't see any problems yet */

        if ((old_termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB)) ==
            (termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB)))
                goto no_data_parity_stop_changes;

no_skip:
        /* Set number of data bits, parity, stop bits */

        value = 0;
        value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
                        FTDI_SIO_SET_DATA_STOP_BITS_1);
        if (cflag & PARENB) {
                if (cflag & CMSPAR)
                        value |= cflag & PARODD ?
                                        FTDI_SIO_SET_DATA_PARITY_MARK :
                                        FTDI_SIO_SET_DATA_PARITY_SPACE;
                else
                        value |= cflag & PARODD ?
                                        FTDI_SIO_SET_DATA_PARITY_ODD :
                                        FTDI_SIO_SET_DATA_PARITY_EVEN;
        } else {
                value |= FTDI_SIO_SET_DATA_PARITY_NONE;
        }
        switch (cflag & CSIZE) {
        case CS5:
                dev_dbg(ddev, "Setting CS5 quirk\n");
                break;
        case CS7:
                value |= 7;
                dev_dbg(ddev, "Setting CS7\n");
                break;
        default:
        case CS8:
                value |= 8;
                dev_dbg(ddev, "Setting CS8\n");
                break;
        }

        /* This is needed by the break command since it uses the same command
           - but is or'ed with this value  */
        priv->last_set_data_value = value;

        if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                            FTDI_SIO_SET_DATA_REQUEST,
                            FTDI_SIO_SET_DATA_REQUEST_TYPE,
                            value , priv->interface,
                            NULL, 0, WDR_SHORT_TIMEOUT) < 0) {
                dev_err(ddev, "%s FAILED to set databits/stopbits/parity\n",
                        __func__);
        }

        /* Now do the baudrate */
no_data_parity_stop_changes:
        if ((cflag & CBAUD) == B0) {
                /* Disable flow control */
                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                                    FTDI_SIO_SET_FLOW_CTRL_REQUEST,
                                    FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
                                    0, priv->interface,
                                    NULL, 0, WDR_TIMEOUT) < 0) {
                        dev_err(ddev, "%s error from disable flowcontrol urb\n",
                                __func__);
                }
                /* Drop RTS and DTR */
                clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
        } else {
                /* set the baudrate determined before */
                mutex_lock(&priv->cfg_lock);
                if (change_speed(tty, port))
                        dev_err(ddev, "%s urb failed to set baudrate\n", __func__);
                mutex_unlock(&priv->cfg_lock);
                /* Ensure RTS and DTR are raised when baudrate changed from 0 */
                if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
                        set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
        }

no_c_cflag_changes:
        /* Set hardware-assisted flow control */
        value = 0;

        if (C_CRTSCTS(tty)) {
                dev_dbg(&port->dev, "enabling rts/cts flow control\n");
                index = FTDI_SIO_RTS_CTS_HS;
        } else if (I_IXON(tty)) {
                dev_dbg(&port->dev, "enabling xon/xoff flow control\n");
                index = FTDI_SIO_XON_XOFF_HS;
                value = STOP_CHAR(tty) << 8 | START_CHAR(tty);
        } else {
                dev_dbg(&port->dev, "disabling flow control\n");
                index = FTDI_SIO_DISABLE_FLOW_CTRL;
        }

        index |= priv->interface;

        ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                        FTDI_SIO_SET_FLOW_CTRL_REQUEST,
                        FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
                        value, index, NULL, 0, WDR_TIMEOUT);
        if (ret < 0)
                dev_err(&port->dev, "failed to set flow control: %d\n", ret);
}

/*
 * Get modem-control status.
 *
 * Returns the number of status bytes retrieved (device dependant), or
 * negative error code.
 */
static int ftdi_get_modem_status(struct usb_serial_port *port,
                                                unsigned char status[2])
{
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        unsigned char *buf;
        int len;
        int ret;

        buf = kmalloc(2, GFP_KERNEL);
        if (!buf)
                return -ENOMEM;
        /*
         * The 8U232AM returns a two byte value (the SIO a 1 byte value) in
         * the same format as the data returned from the in point.
         */
        switch (priv->chip_type) {
        case SIO:
                len = 1;
                break;
        case FT8U232AM:
        case FT232BM:
        case FT2232C:
        case FT232RL:
        case FT2232H:
        case FT4232H:
        case FT232H:
        case FTX:
                len = 2;
                break;
        default:
                ret = -EFAULT;
                goto out;
        }

        ret = usb_control_msg(port->serial->dev,
                        usb_rcvctrlpipe(port->serial->dev, 0),
                        FTDI_SIO_GET_MODEM_STATUS_REQUEST,
                        FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
                        0, priv->interface,
                        buf, len, WDR_TIMEOUT);

        /* NOTE: We allow short responses and handle that below. */
        if (ret < 1) {
                dev_err(&port->dev, "failed to get modem status: %d\n", ret);
                if (ret >= 0)
                        ret = -EIO;
                ret = usb_translate_errors(ret);
                goto out;
        }

        status[0] = buf[0];
        if (ret > 1)
                status[1] = buf[1];
        else
                status[1] = 0;

        dev_dbg(&port->dev, "%s - 0x%02x%02x\n", __func__, status[0],
                                                                status[1]);
out:
        kfree(buf);

        return ret;
}

static int ftdi_tiocmget(struct tty_struct *tty)
{
        struct usb_serial_port *port = tty->driver_data;
        struct ftdi_private *priv = usb_get_serial_port_data(port);
        unsigned char buf[2];
        int ret;

        ret = ftdi_get_modem_status(port, buf);
        if (ret < 0)
                return ret;

        ret =   (buf[0] & FTDI_SIO_DSR_MASK  ? TIOCM_DSR : 0) |
                (buf[0] & FTDI_SIO_CTS_MASK  ? TIOCM_CTS : 0) |
                (buf[0] & FTDI_SIO_RI_MASK   ? TIOCM_RI  : 0) |
                (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD  : 0) |
                priv->last_dtr_rts;

        return ret;
}

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

        return update_mctrl(port, set, clear);
}

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

        switch (cmd) {
        case TIOCSERGETLSR:
                return get_lsr_info(port, argp);
        default:
                break;
        }

        return -ENOIOCTLCMD;
}

module_usb_serial_driver(serial_drivers, id_table_combined);

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

module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override");