root/drivers/media/usb/dvb-usb/dw2102.c
// SPDX-License-Identifier: GPL-2.0-only
/* DVB USB framework compliant Linux driver for the
 *      DVBWorld DVB-S 2101, 2102, DVB-S2 2104, DVB-C 3101,
 *      TeVii S421, S480, S482, S600, S630, S632, S650, S660, S662,
 *      Prof 1100, 7500,
 *      Geniatech SU3000, T220,
 *      TechnoTrend S2-4600,
 *      Terratec Cinergy S2 cards
 * Copyright (C) 2008-2012 Igor M. Liplianin (liplianin@me.by)
 *
 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
 */
#include <media/dvb-usb-ids.h>
#include "dw2102.h"
#include "si21xx.h"
#include "stv0299.h"
#include "z0194a.h"
#include "stv0288.h"
#include "stb6000.h"
#include "eds1547.h"
#include "cx24116.h"
#include "tda1002x.h"
#include "mt312.h"
#include "zl10039.h"
#include "ts2020.h"
#include "ds3000.h"
#include "stv0900.h"
#include "stv6110.h"
#include "stb6100.h"
#include "stb6100_proc.h"
#include "m88rs2000.h"
#include "tda18271.h"
#include "cxd2820r.h"
#include "m88ds3103.h"

/* Max transfer size done by I2C transfer functions */
#define MAX_XFER_SIZE  64

#define DW210X_READ_MSG 0
#define DW210X_WRITE_MSG 1

#define REG_1F_SYMBOLRATE_BYTE0 0x1f
#define REG_20_SYMBOLRATE_BYTE1 0x20
#define REG_21_SYMBOLRATE_BYTE2 0x21
/* on my own*/
#define DW2102_VOLTAGE_CTRL (0x1800)
#define SU3000_STREAM_CTRL (0x1900)
#define DW2102_RC_QUERY (0x1a00)
#define DW2102_LED_CTRL (0x1b00)

#define DW2101_FIRMWARE "dvb-usb-dw2101.fw"
#define DW2102_FIRMWARE "dvb-usb-dw2102.fw"
#define DW2104_FIRMWARE "dvb-usb-dw2104.fw"
#define DW3101_FIRMWARE "dvb-usb-dw3101.fw"
#define S630_FIRMWARE   "dvb-usb-s630.fw"
#define S660_FIRMWARE   "dvb-usb-s660.fw"
#define P1100_FIRMWARE  "dvb-usb-p1100.fw"
#define P7500_FIRMWARE  "dvb-usb-p7500.fw"

#define err_str "did not find the firmware file '%s'. You can use <kernel_dir>/scripts/get_dvb_firmware to get the firmware"

struct dw2102_state {
        u8 initialized;
        u8 last_lock;
        u8 data[MAX_XFER_SIZE + 4];
        struct i2c_client *i2c_client_demod;
        struct i2c_client *i2c_client_tuner;

        /* fe hook functions*/
        int (*old_set_voltage)(struct dvb_frontend *f, enum fe_sec_voltage v);
        int (*fe_read_status)(struct dvb_frontend *fe,
                              enum fe_status *status);
};

/* debug */
static int dvb_usb_dw2102_debug;
module_param_named(debug, dvb_usb_dw2102_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info 2=xfer 4=rc(or-able))."
                                                DVB_USB_DEBUG_STATUS);

/* demod probe */
static int demod_probe = 1;
module_param_named(demod, demod_probe, int, 0644);
MODULE_PARM_DESC(demod, "demod to probe (1=cx24116 2=stv0903+stv6110 4=stv0903+stb6100(or-able)).");

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static int dw210x_op_rw(struct usb_device *dev, u8 request, u16 value,
                        u16 index, u8 *data, u16 len, int flags)
{
        int ret;
        u8 *u8buf;
        unsigned int pipe = (flags == DW210X_READ_MSG) ?
                                usb_rcvctrlpipe(dev, 0) : usb_sndctrlpipe(dev, 0);
        u8 request_type = (flags == DW210X_READ_MSG) ? USB_DIR_IN : USB_DIR_OUT;

        u8buf = kmalloc(len, GFP_KERNEL);
        if (!u8buf)
                return -ENOMEM;

        if (flags == DW210X_WRITE_MSG)
                memcpy(u8buf, data, len);
        ret = usb_control_msg(dev, pipe, request, request_type | USB_TYPE_VENDOR,
                              value, index, u8buf, len, 2000);

        if (flags == DW210X_READ_MSG)
                memcpy(data, u8buf, len);

        kfree(u8buf);
        return ret;
}

/* I2C */
static int dw2102_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
                               int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        int i = 0;
        u8 buf6[] = {0x2c, 0x05, 0xc0, 0, 0, 0, 0};
        u16 value;

        if (!d)
                return -ENODEV;
        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;

        switch (num) {
        case 2:
                if (msg[0].len < 1) {
                        num = -EOPNOTSUPP;
                        break;
                }
                /* read stv0299 register */
                value = msg[0].buf[0];/* register */
                for (i = 0; i < msg[1].len; i++) {
                        dw210x_op_rw(d->udev, 0xb5, value + i, 0,
                                     buf6, 2, DW210X_READ_MSG);
                        msg[1].buf[i] = buf6[0];
                }
                break;
        case 1:
                switch (msg[0].addr) {
                case 0x68:
                        if (msg[0].len < 2) {
                                num = -EOPNOTSUPP;
                                break;
                        }
                        /* write to stv0299 register */
                        buf6[0] = 0x2a;
                        buf6[1] = msg[0].buf[0];
                        buf6[2] = msg[0].buf[1];
                        dw210x_op_rw(d->udev, 0xb2, 0, 0,
                                     buf6, 3, DW210X_WRITE_MSG);
                        break;
                case 0x60:
                        if (msg[0].flags == 0) {
                                if (msg[0].len < 4) {
                                        num = -EOPNOTSUPP;
                                        break;
                                }
                        /* write to tuner pll */
                                buf6[0] = 0x2c;
                                buf6[1] = 5;
                                buf6[2] = 0xc0;
                                buf6[3] = msg[0].buf[0];
                                buf6[4] = msg[0].buf[1];
                                buf6[5] = msg[0].buf[2];
                                buf6[6] = msg[0].buf[3];
                                dw210x_op_rw(d->udev, 0xb2, 0, 0,
                                             buf6, 7, DW210X_WRITE_MSG);
                        } else {
                                if (msg[0].len < 1) {
                                        num = -EOPNOTSUPP;
                                        break;
                                }
                        /* read from tuner */
                                dw210x_op_rw(d->udev, 0xb5, 0, 0,
                                             buf6, 1, DW210X_READ_MSG);
                                msg[0].buf[0] = buf6[0];
                        }
                        break;
                case (DW2102_RC_QUERY):
                        if (msg[0].len < 2) {
                                num = -EOPNOTSUPP;
                                break;
                        }
                        dw210x_op_rw(d->udev, 0xb8, 0, 0,
                                     buf6, 2, DW210X_READ_MSG);
                        msg[0].buf[0] = buf6[0];
                        msg[0].buf[1] = buf6[1];
                        break;
                case (DW2102_VOLTAGE_CTRL):
                        if (msg[0].len < 1) {
                                num = -EOPNOTSUPP;
                                break;
                        }
                        buf6[0] = 0x30;
                        buf6[1] = msg[0].buf[0];
                        dw210x_op_rw(d->udev, 0xb2, 0, 0,
                                     buf6, 2, DW210X_WRITE_MSG);
                        break;
                }

                break;
        }

        mutex_unlock(&d->i2c_mutex);
        return num;
}

static int dw2102_serit_i2c_transfer(struct i2c_adapter *adap,
                                     struct i2c_msg msg[], int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        u8 buf6[] = {0, 0, 0, 0, 0, 0, 0};

        if (!d)
                return -ENODEV;
        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;

        switch (num) {
        case 2:
                if (msg[0].len != 1) {
                        warn("i2c rd: len=%d is not 1!\n",
                             msg[0].len);
                        num = -EOPNOTSUPP;
                        break;
                }

                if (2 + msg[1].len > sizeof(buf6)) {
                        warn("i2c rd: len=%d is too big!\n",
                             msg[1].len);
                        num = -EOPNOTSUPP;
                        break;
                }

                /* read si2109 register by number */
                buf6[0] = msg[0].addr << 1;
                buf6[1] = msg[0].len;
                buf6[2] = msg[0].buf[0];
                dw210x_op_rw(d->udev, 0xc2, 0, 0,
                             buf6, msg[0].len + 2, DW210X_WRITE_MSG);
                /* read si2109 register */
                dw210x_op_rw(d->udev, 0xc3, 0xd0, 0,
                             buf6, msg[1].len + 2, DW210X_READ_MSG);
                memcpy(msg[1].buf, buf6 + 2, msg[1].len);

                break;
        case 1:
                switch (msg[0].addr) {
                case 0x68:
                        if (2 + msg[0].len > sizeof(buf6)) {
                                warn("i2c wr: len=%d is too big!\n",
                                     msg[0].len);
                                num = -EOPNOTSUPP;
                                break;
                        }

                        /* write to si2109 register */
                        buf6[0] = msg[0].addr << 1;
                        buf6[1] = msg[0].len;
                        memcpy(buf6 + 2, msg[0].buf, msg[0].len);
                        dw210x_op_rw(d->udev, 0xc2, 0, 0, buf6,
                                     msg[0].len + 2, DW210X_WRITE_MSG);
                        break;
                case(DW2102_RC_QUERY):
                        dw210x_op_rw(d->udev, 0xb8, 0, 0,
                                     buf6, 2, DW210X_READ_MSG);
                        msg[0].buf[0] = buf6[0];
                        msg[0].buf[1] = buf6[1];
                        break;
                case(DW2102_VOLTAGE_CTRL):
                        buf6[0] = 0x30;
                        buf6[1] = msg[0].buf[0];
                        dw210x_op_rw(d->udev, 0xb2, 0, 0,
                                     buf6, 2, DW210X_WRITE_MSG);
                        break;
                }
                break;
        }

        mutex_unlock(&d->i2c_mutex);
        return num;
}

static int dw2102_earda_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[], int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        int ret;

        if (!d)
                return -ENODEV;
        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;

        switch (num) {
        case 2: {
                /* read */
                /* first write first register number */
                u8 ibuf[MAX_XFER_SIZE], obuf[3];

                if (2 + msg[0].len != sizeof(obuf)) {
                        warn("i2c rd: len=%d is not 1!\n",
                             msg[0].len);
                        ret = -EOPNOTSUPP;
                        goto unlock;
                }

                if (2 + msg[1].len > sizeof(ibuf)) {
                        warn("i2c rd: len=%d is too big!\n",
                             msg[1].len);
                        ret = -EOPNOTSUPP;
                        goto unlock;
                }

                obuf[0] = msg[0].addr << 1;
                obuf[1] = msg[0].len;
                obuf[2] = msg[0].buf[0];
                dw210x_op_rw(d->udev, 0xc2, 0, 0,
                             obuf, msg[0].len + 2, DW210X_WRITE_MSG);
                /* second read registers */
                dw210x_op_rw(d->udev, 0xc3, 0xd1, 0,
                             ibuf, msg[1].len + 2, DW210X_READ_MSG);
                memcpy(msg[1].buf, ibuf + 2, msg[1].len);

                break;
        }
        case 1:
                switch (msg[0].addr) {
                case 0x68: {
                        /* write to register */
                        u8 obuf[MAX_XFER_SIZE];

                        if (2 + msg[0].len > sizeof(obuf)) {
                                warn("i2c wr: len=%d is too big!\n",
                                     msg[1].len);
                                ret = -EOPNOTSUPP;
                                goto unlock;
                        }

                        obuf[0] = msg[0].addr << 1;
                        obuf[1] = msg[0].len;
                        memcpy(obuf + 2, msg[0].buf, msg[0].len);
                        dw210x_op_rw(d->udev, 0xc2, 0, 0,
                                     obuf, msg[0].len + 2, DW210X_WRITE_MSG);
                        break;
                }
                case 0x61: {
                        /* write to tuner */
                        u8 obuf[MAX_XFER_SIZE];

                        if (2 + msg[0].len > sizeof(obuf)) {
                                warn("i2c wr: len=%d is too big!\n",
                                     msg[1].len);
                                ret = -EOPNOTSUPP;
                                goto unlock;
                        }

                        obuf[0] = msg[0].addr << 1;
                        obuf[1] = msg[0].len;
                        memcpy(obuf + 2, msg[0].buf, msg[0].len);
                        dw210x_op_rw(d->udev, 0xc2, 0, 0,
                                     obuf, msg[0].len + 2, DW210X_WRITE_MSG);
                        break;
                }
                case(DW2102_RC_QUERY): {
                        u8 ibuf[2];

                        dw210x_op_rw(d->udev, 0xb8, 0, 0,
                                     ibuf, 2, DW210X_READ_MSG);
                        memcpy(msg[0].buf, ibuf, 2);
                        break;
                }
                case(DW2102_VOLTAGE_CTRL): {
                        u8 obuf[2];

                        obuf[0] = 0x30;
                        obuf[1] = msg[0].buf[0];
                        dw210x_op_rw(d->udev, 0xb2, 0, 0,
                                     obuf, 2, DW210X_WRITE_MSG);
                        break;
                }
                }

                break;
        }
        ret = num;

unlock:
        mutex_unlock(&d->i2c_mutex);
        return ret;
}

static int dw2104_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[], int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        int len, i, j, ret;

        if (!d)
                return -ENODEV;
        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;

        for (j = 0; j < num; j++) {
                switch (msg[j].addr) {
                case(DW2102_RC_QUERY): {
                        u8 ibuf[2];

                        dw210x_op_rw(d->udev, 0xb8, 0, 0,
                                     ibuf, 2, DW210X_READ_MSG);
                        memcpy(msg[j].buf, ibuf, 2);
                        break;
                }
                case(DW2102_VOLTAGE_CTRL): {
                        u8 obuf[2];

                        obuf[0] = 0x30;
                        obuf[1] = msg[j].buf[0];
                        dw210x_op_rw(d->udev, 0xb2, 0, 0,
                                     obuf, 2, DW210X_WRITE_MSG);
                        break;
                }
                /* case 0x55: cx24116
                 * case 0x6a: stv0903
                 * case 0x68: ds3000, stv0903
                 * case 0x60: ts2020, stv6110, stb6100
                 */
                default: {
                        if (msg[j].flags == I2C_M_RD) {
                                /* read registers */
                                u8  ibuf[MAX_XFER_SIZE];

                                if (2 + msg[j].len > sizeof(ibuf)) {
                                        warn("i2c rd: len=%d is too big!\n",
                                             msg[j].len);
                                        ret = -EOPNOTSUPP;
                                        goto unlock;
                                }

                                dw210x_op_rw(d->udev, 0xc3,
                                             (msg[j].addr << 1) + 1, 0,
                                             ibuf, msg[j].len + 2,
                                             DW210X_READ_MSG);
                                memcpy(msg[j].buf, ibuf + 2, msg[j].len);
                                mdelay(10);
                        } else if (((msg[j].buf[0] == 0xb0) && (msg[j].addr == 0x68)) ||
                                   ((msg[j].buf[0] == 0xf7) && (msg[j].addr == 0x55))) {
                                /* write firmware */
                                u8 obuf[19];

                                obuf[0] = msg[j].addr << 1;
                                obuf[1] = (msg[j].len > 15 ? 17 : msg[j].len);
                                obuf[2] = msg[j].buf[0];
                                len = msg[j].len - 1;
                                i = 1;
                                do {
                                        memcpy(obuf + 3, msg[j].buf + i,
                                               (len > 16 ? 16 : len));
                                        dw210x_op_rw(d->udev, 0xc2, 0, 0,
                                                     obuf, (len > 16 ? 16 : len) + 3,
                                                     DW210X_WRITE_MSG);
                                        i += 16;
                                        len -= 16;
                                } while (len > 0);
                        } else {
                                /* write registers */
                                u8 obuf[MAX_XFER_SIZE];

                                if (2 + msg[j].len > sizeof(obuf)) {
                                        warn("i2c wr: len=%d is too big!\n",
                                             msg[j].len);
                                        ret = -EOPNOTSUPP;
                                        goto unlock;
                                }

                                obuf[0] = msg[j].addr << 1;
                                obuf[1] = msg[j].len;
                                memcpy(obuf + 2, msg[j].buf, msg[j].len);
                                dw210x_op_rw(d->udev, 0xc2, 0, 0,
                                             obuf, msg[j].len + 2,
                                             DW210X_WRITE_MSG);
                        }
                        break;
                }
                }
        }
        ret = num;

unlock:
        mutex_unlock(&d->i2c_mutex);
        return ret;
}

static int dw3101_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
                               int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        int ret;
        int i;

        if (!d)
                return -ENODEV;
        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;

        switch (num) {
        case 2: {
                /* read */
                /* first write first register number */
                u8 ibuf[MAX_XFER_SIZE], obuf[3];

                if (2 + msg[0].len != sizeof(obuf)) {
                        warn("i2c rd: len=%d is not 1!\n",
                             msg[0].len);
                        ret = -EOPNOTSUPP;
                        goto unlock;
                }
                if (2 + msg[1].len > sizeof(ibuf)) {
                        warn("i2c rd: len=%d is too big!\n",
                             msg[1].len);
                        ret = -EOPNOTSUPP;
                        goto unlock;
                }
                obuf[0] = msg[0].addr << 1;
                obuf[1] = msg[0].len;
                obuf[2] = msg[0].buf[0];
                dw210x_op_rw(d->udev, 0xc2, 0, 0,
                             obuf, msg[0].len + 2, DW210X_WRITE_MSG);
                /* second read registers */
                dw210x_op_rw(d->udev, 0xc3, 0x19, 0,
                             ibuf, msg[1].len + 2, DW210X_READ_MSG);
                memcpy(msg[1].buf, ibuf + 2, msg[1].len);

                break;
        }
        case 1:
                switch (msg[0].addr) {
                case 0x60:
                case 0x0c: {
                        /* write to register */
                        u8 obuf[MAX_XFER_SIZE];

                        if (2 + msg[0].len > sizeof(obuf)) {
                                warn("i2c wr: len=%d is too big!\n",
                                     msg[0].len);
                                ret = -EOPNOTSUPP;
                                goto unlock;
                        }
                        obuf[0] = msg[0].addr << 1;
                        obuf[1] = msg[0].len;
                        memcpy(obuf + 2, msg[0].buf, msg[0].len);
                        dw210x_op_rw(d->udev, 0xc2, 0, 0,
                                     obuf, msg[0].len + 2, DW210X_WRITE_MSG);
                        break;
                }
                case(DW2102_RC_QUERY): {
                        u8 ibuf[2];

                        dw210x_op_rw(d->udev, 0xb8, 0, 0,
                                     ibuf, 2, DW210X_READ_MSG);
                        memcpy(msg[0].buf, ibuf, 2);
                        break;
                }
                }

                break;
        }

        for (i = 0; i < num; i++) {
                deb_xfer("%02x:%02x: %s ", i, msg[i].addr,
                         msg[i].flags == 0 ? ">>>" : "<<<");
                debug_dump(msg[i].buf, msg[i].len, deb_xfer);
        }
        ret = num;

unlock:
        mutex_unlock(&d->i2c_mutex);
        return ret;
}

static int s6x0_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
                             int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        struct usb_device *udev;
        int len, i, j, ret;

        if (!d)
                return -ENODEV;
        udev = d->udev;
        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;

        for (j = 0; j < num; j++) {
                switch (msg[j].addr) {
                case (DW2102_RC_QUERY): {
                        u8 ibuf[5];

                        dw210x_op_rw(d->udev, 0xb8, 0, 0,
                                     ibuf, 5, DW210X_READ_MSG);
                        memcpy(msg[j].buf, ibuf + 3, 2);
                        break;
                }
                case (DW2102_VOLTAGE_CTRL): {
                        u8 obuf[2];

                        obuf[0] = 1;
                        obuf[1] = msg[j].buf[1];/* off-on */
                        dw210x_op_rw(d->udev, 0x8a, 0, 0,
                                     obuf, 2, DW210X_WRITE_MSG);
                        obuf[0] = 3;
                        obuf[1] = msg[j].buf[0];/* 13v-18v */
                        dw210x_op_rw(d->udev, 0x8a, 0, 0,
                                     obuf, 2, DW210X_WRITE_MSG);
                        break;
                }
                case (DW2102_LED_CTRL): {
                        u8 obuf[2];

                        obuf[0] = 5;
                        obuf[1] = msg[j].buf[0];
                        dw210x_op_rw(d->udev, 0x8a, 0, 0,
                                     obuf, 2, DW210X_WRITE_MSG);
                        break;
                }
                /* case 0x55: cx24116
                 * case 0x6a: stv0903
                 * case 0x68: ds3000, stv0903, rs2000
                 * case 0x60: ts2020, stv6110, stb6100
                 * case 0xa0: eeprom
                 */
                default: {
                        if (msg[j].flags == I2C_M_RD) {
                                /* read registers */
                                u8 ibuf[MAX_XFER_SIZE];

                                if (msg[j].len > sizeof(ibuf)) {
                                        warn("i2c rd: len=%d is too big!\n",
                                             msg[j].len);
                                        ret = -EOPNOTSUPP;
                                        goto unlock;
                                }

                                dw210x_op_rw(d->udev, 0x91, 0, 0,
                                             ibuf, msg[j].len,
                                                DW210X_READ_MSG);
                                memcpy(msg[j].buf, ibuf, msg[j].len);
                                break;
                        } else if ((msg[j].buf[0] == 0xb0) && (msg[j].addr == 0x68)) {
                                /* write firmware */
                                u8 obuf[19];

                                obuf[0] = (msg[j].len > 16 ?
                                                18 : msg[j].len + 1);
                                obuf[1] = msg[j].addr << 1;
                                obuf[2] = msg[j].buf[0];
                                len = msg[j].len - 1;
                                i = 1;
                                do {
                                        memcpy(obuf + 3, msg[j].buf + i,
                                               (len > 16 ? 16 : len));
                                        dw210x_op_rw(d->udev, 0x80, 0, 0,
                                                     obuf, (len > 16 ? 16 : len) + 3,
                                                     DW210X_WRITE_MSG);
                                        i += 16;
                                        len -= 16;
                                } while (len > 0);
                        } else if (j < (num - 1)) {
                                /* write register addr before read */
                                u8 obuf[MAX_XFER_SIZE];

                                if (2 + msg[j].len > sizeof(obuf)) {
                                        warn("i2c wr: len=%d is too big!\n",
                                             msg[j].len);
                                        ret = -EOPNOTSUPP;
                                        goto unlock;
                                }

                                obuf[0] = msg[j + 1].len;
                                obuf[1] = (msg[j].addr << 1);
                                memcpy(obuf + 2, msg[j].buf, msg[j].len);
                                dw210x_op_rw(d->udev,
                                             le16_to_cpu(udev->descriptor.idProduct) == 0x7500 ? 0x92 : 0x90,
                                             0, 0, obuf, msg[j].len + 2,
                                             DW210X_WRITE_MSG);
                                break;
                        } else {
                                /* write registers */
                                u8 obuf[MAX_XFER_SIZE];

                                if (2 + msg[j].len > sizeof(obuf)) {
                                        warn("i2c wr: len=%d is too big!\n",
                                             msg[j].len);
                                        ret = -EOPNOTSUPP;
                                        goto unlock;
                                }
                                obuf[0] = msg[j].len + 1;
                                obuf[1] = (msg[j].addr << 1);
                                memcpy(obuf + 2, msg[j].buf, msg[j].len);
                                dw210x_op_rw(d->udev, 0x80, 0, 0,
                                             obuf, msg[j].len + 2,
                                             DW210X_WRITE_MSG);
                                break;
                        }
                        break;
                }
                }
        }
        ret = num;

unlock:
        mutex_unlock(&d->i2c_mutex);
        return ret;
}

static int su3000_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
                               int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        struct dw2102_state *state;
        int j;

        if (!d)
                return -ENODEV;

        state = d->priv;

        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;
        if (mutex_lock_interruptible(&d->data_mutex) < 0) {
                mutex_unlock(&d->i2c_mutex);
                return -EAGAIN;
        }

        j = 0;
        while (j < num) {
                switch (msg[j].addr) {
                case SU3000_STREAM_CTRL:
                        state->data[0] = msg[j].buf[0] + 0x36;
                        state->data[1] = 3;
                        state->data[2] = 0;
                        if (dvb_usb_generic_rw(d, state->data, 3,
                                               state->data, 0, 0) < 0)
                                err("i2c transfer failed.");
                        break;
                case DW2102_RC_QUERY:
                        state->data[0] = 0x10;
                        if (dvb_usb_generic_rw(d, state->data, 1,
                                               state->data, 2, 0) < 0)
                                err("i2c transfer failed.");
                        msg[j].buf[1] = state->data[0];
                        msg[j].buf[0] = state->data[1];
                        break;
                default:
                        /* if the current write msg is followed by a another
                         * read msg to/from the same address
                         */
                        if ((j + 1 < num) && (msg[j + 1].flags & I2C_M_RD) &&
                            (msg[j].addr == msg[j + 1].addr)) {
                                /* join both i2c msgs to one usb read command */
                                if (4 + msg[j].len > sizeof(state->data)) {
                                        warn("i2c combined wr/rd: write len=%d is too big!\n",
                                             msg[j].len);
                                        num = -EOPNOTSUPP;
                                        break;
                                }
                                if (1 + msg[j + 1].len > sizeof(state->data)) {
                                        warn("i2c combined wr/rd: read len=%d is too big!\n",
                                            msg[j + 1].len);
                                        num = -EOPNOTSUPP;
                                        break;
                                }

                                state->data[0] = 0x09;
                                state->data[1] = msg[j].len;
                                state->data[2] = msg[j + 1].len;
                                state->data[3] = msg[j].addr;
                                memcpy(&state->data[4], msg[j].buf, msg[j].len);

                                if (dvb_usb_generic_rw(d, state->data, msg[j].len + 4,
                                        state->data, msg[j + 1].len + 1, 0) < 0)
                                        err("i2c transfer failed.");

                                memcpy(msg[j + 1].buf, &state->data[1], msg[j + 1].len);
                                j++;
                                break;
                        }

                        if (msg[j].flags & I2C_M_RD) {
                                /* single read */
                                if (4 + msg[j].len > sizeof(state->data)) {
                                        warn("i2c rd: len=%d is too big!\n", msg[j].len);
                                        num = -EOPNOTSUPP;
                                        break;
                                }

                                state->data[0] = 0x09;
                                state->data[1] = 0;
                                state->data[2] = msg[j].len;
                                state->data[3] = msg[j].addr;
                                memcpy(&state->data[4], msg[j].buf, msg[j].len);

                                if (dvb_usb_generic_rw(d, state->data, 4,
                                                       state->data, msg[j].len + 1, 0) < 0)
                                        err("i2c transfer failed.");

                                memcpy(msg[j].buf, &state->data[1], msg[j].len);
                                break;
                        }

                        /* single write */
                        if (3 + msg[j].len > sizeof(state->data)) {
                                warn("i2c wr: len=%d is too big!\n", msg[j].len);
                                num = -EOPNOTSUPP;
                                break;
                        }

                        state->data[0] = 0x08;
                        state->data[1] = msg[j].addr;
                        state->data[2] = msg[j].len;

                        memcpy(&state->data[3], msg[j].buf, msg[j].len);

                        if (dvb_usb_generic_rw(d, state->data, msg[j].len + 3,
                                               state->data, 1, 0) < 0)
                                err("i2c transfer failed.");
                } // switch
                j++;

        } // while
        mutex_unlock(&d->data_mutex);
        mutex_unlock(&d->i2c_mutex);
        return num;
}

static u32 dw210x_i2c_func(struct i2c_adapter *adapter)
{
        return I2C_FUNC_I2C;
}

static const struct i2c_algorithm dw2102_i2c_algo = {
        .master_xfer = dw2102_i2c_transfer,
        .functionality = dw210x_i2c_func,
};

static const struct i2c_algorithm dw2102_serit_i2c_algo = {
        .master_xfer = dw2102_serit_i2c_transfer,
        .functionality = dw210x_i2c_func,
};

static const struct i2c_algorithm dw2102_earda_i2c_algo = {
        .master_xfer = dw2102_earda_i2c_transfer,
        .functionality = dw210x_i2c_func,
};

static const struct i2c_algorithm dw2104_i2c_algo = {
        .master_xfer = dw2104_i2c_transfer,
        .functionality = dw210x_i2c_func,
};

static const struct i2c_algorithm dw3101_i2c_algo = {
        .master_xfer = dw3101_i2c_transfer,
        .functionality = dw210x_i2c_func,
};

static const struct i2c_algorithm s6x0_i2c_algo = {
        .master_xfer = s6x0_i2c_transfer,
        .functionality = dw210x_i2c_func,
};

static const struct i2c_algorithm su3000_i2c_algo = {
        .master_xfer = su3000_i2c_transfer,
        .functionality = dw210x_i2c_func,
};

static int dw210x_read_mac_address(struct dvb_usb_device *d, u8 mac[6])
{
        int i;
        u8 ibuf[] = {0, 0};
        u8 eeprom[256], eepromline[16];

        for (i = 0; i < 256; i++) {
                if (dw210x_op_rw(d->udev, 0xb6, 0xa0, i, ibuf, 2, DW210X_READ_MSG) < 0) {
                        err("read eeprom failed.");
                        return -EIO;
                } else {
                        eepromline[i % 16] = ibuf[0];
                        eeprom[i] = ibuf[0];
                }
                if ((i % 16) == 15) {
                        deb_xfer("%02x: ", i - 15);
                        debug_dump(eepromline, 16, deb_xfer);
                }
        }

        memcpy(mac, eeprom + 8, 6);
        return 0;
};

static int s6x0_read_mac_address(struct dvb_usb_device *d, u8 mac[6])
{
        int i, ret;
        u8 ibuf[] = { 0 }, obuf[] = { 0 };
        u8 eeprom[256], eepromline[16];
        struct i2c_msg msg[] = {
                {
                        .addr = 0xa0 >> 1,
                        .flags = 0,
                        .buf = obuf,
                        .len = 1,
                }, {
                        .addr = 0xa0 >> 1,
                        .flags = I2C_M_RD,
                        .buf = ibuf,
                        .len = 1,
                }
        };

        for (i = 0; i < 256; i++) {
                obuf[0] = i;
                ret = s6x0_i2c_transfer(&d->i2c_adap, msg, 2);
                if (ret != 2) {
                        err("read eeprom failed.");
                        return -EIO;
                } else {
                        eepromline[i % 16] = ibuf[0];
                        eeprom[i] = ibuf[0];
                }

                if ((i % 16) == 15) {
                        deb_xfer("%02x: ", i - 15);
                        debug_dump(eepromline, 16, deb_xfer);
                }
        }

        memcpy(mac, eeprom + 16, 6);
        return 0;
};

static int su3000_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
        static u8 command_start[] = {0x00};
        static u8 command_stop[] = {0x01};
        struct i2c_msg msg = {
                .addr = SU3000_STREAM_CTRL,
                .flags = 0,
                .buf = onoff ? command_start : command_stop,
                .len = 1
        };

        i2c_transfer(&adap->dev->i2c_adap, &msg, 1);

        return 0;
}

static int su3000_power_ctrl(struct dvb_usb_device *d, int i)
{
        struct dw2102_state *state = d->priv;
        int ret = 0;

        info("%s: %d, initialized %d", __func__, i, state->initialized);

        if (i && !state->initialized) {
                mutex_lock(&d->data_mutex);

                state->data[0] = 0xde;
                state->data[1] = 0;

                state->initialized = 1;
                /* reset board */
                ret = dvb_usb_generic_rw(d, state->data, 2, NULL, 0, 0);
                mutex_unlock(&d->data_mutex);
        }

        return ret;
}

static int su3000_read_mac_address(struct dvb_usb_device *d, u8 mac[6])
{
        int i;
        u8 obuf[] = { 0x1f, 0xf0 };
        u8 ibuf[] = { 0 };
        struct i2c_msg msg[] = {
                {
                        .addr = 0x51,
                        .flags = 0,
                        .buf = obuf,
                        .len = 2,
                }, {
                        .addr = 0x51,
                        .flags = I2C_M_RD,
                        .buf = ibuf,
                        .len = 1,
                }
        };

        for (i = 0; i < 6; i++) {
                obuf[1] = 0xf0 + i;
                if (i2c_transfer(&d->i2c_adap, msg, 2) != 2)
                        return -EIO;
                else
                        mac[i] = ibuf[0];
        }

        return 0;
}

static int su3000_identify_state(struct usb_device *udev,
                                 const struct dvb_usb_device_properties *props,
                                 const struct dvb_usb_device_description **desc,
                                 int *cold)
{
        *cold = 0;
        return 0;
}

static int dw210x_set_voltage(struct dvb_frontend *fe,
                              enum fe_sec_voltage voltage)
{
        static u8 command_13v[] = {0x00, 0x01};
        static u8 command_18v[] = {0x01, 0x01};
        static u8 command_off[] = {0x00, 0x00};
        struct i2c_msg msg = {
                .addr = DW2102_VOLTAGE_CTRL,
                .flags = 0,
                .buf = command_off,
                .len = 2,
        };

        struct dvb_usb_adapter *udev_adap = fe->dvb->priv;

        if (voltage == SEC_VOLTAGE_18)
                msg.buf = command_18v;
        else if (voltage == SEC_VOLTAGE_13)
                msg.buf = command_13v;

        i2c_transfer(&udev_adap->dev->i2c_adap, &msg, 1);

        return 0;
}

static int s660_set_voltage(struct dvb_frontend *fe,
                            enum fe_sec_voltage voltage)
{
        struct dvb_usb_adapter *d = fe->dvb->priv;
        struct dw2102_state *st = d->dev->priv;

        dw210x_set_voltage(fe, voltage);
        if (st->old_set_voltage)
                st->old_set_voltage(fe, voltage);

        return 0;
}

static void dw210x_led_ctrl(struct dvb_frontend *fe, int offon)
{
        static u8 led_off[] = { 0 };
        static u8 led_on[] = { 1 };
        struct i2c_msg msg = {
                .addr = DW2102_LED_CTRL,
                .flags = 0,
                .buf = led_off,
                .len = 1
        };
        struct dvb_usb_adapter *udev_adap = fe->dvb->priv;

        if (offon)
                msg.buf = led_on;
        i2c_transfer(&udev_adap->dev->i2c_adap, &msg, 1);
}

static int tt_s2_4600_read_status(struct dvb_frontend *fe,
                                  enum fe_status *status)
{
        struct dvb_usb_adapter *d = fe->dvb->priv;
        struct dw2102_state *st = d->dev->priv;
        int ret;

        ret = st->fe_read_status(fe, status);

        /* resync slave fifo when signal change from unlock to lock */
        if ((*status & FE_HAS_LOCK) && (!st->last_lock))
                su3000_streaming_ctrl(d, 1);

        st->last_lock = (*status & FE_HAS_LOCK) ? 1 : 0;
        return ret;
}

static struct stv0299_config sharp_z0194a_config = {
        .demod_address = 0x68,
        .inittab = sharp_z0194a_inittab,
        .mclk = 88000000UL,
        .invert = 1,
        .skip_reinit = 0,
        .lock_output = STV0299_LOCKOUTPUT_1,
        .volt13_op0_op1 = STV0299_VOLT13_OP1,
        .min_delay_ms = 100,
        .set_symbol_rate = sharp_z0194a_set_symbol_rate,
};

static struct cx24116_config dw2104_config = {
        .demod_address = 0x55,
        .mpg_clk_pos_pol = 0x01,
};

static struct si21xx_config serit_sp1511lhb_config = {
        .demod_address = 0x68,
        .min_delay_ms = 100,

};

static struct tda10023_config dw3101_tda10023_config = {
        .demod_address = 0x0c,
        .invert = 1,
};

static struct mt312_config zl313_config = {
        .demod_address = 0x0e,
};

static struct ds3000_config dw2104_ds3000_config = {
        .demod_address = 0x68,
};

static struct ts2020_config dw2104_ts2020_config = {
        .tuner_address = 0x60,
        .clk_out_div = 1,
        .frequency_div = 1060000,
};

static struct ds3000_config s660_ds3000_config = {
        .demod_address = 0x68,
        .ci_mode = 1,
        .set_lock_led = dw210x_led_ctrl,
};

static struct ts2020_config s660_ts2020_config = {
        .tuner_address = 0x60,
        .clk_out_div = 1,
        .frequency_div = 1146000,
};

static struct stv0900_config dw2104a_stv0900_config = {
        .demod_address = 0x6a,
        .demod_mode = 0,
        .xtal = 27000000,
        .clkmode = 3,/* 0-CLKI, 2-XTALI, else AUTO */
        .diseqc_mode = 2,/* 2/3 PWM */
        .tun1_maddress = 0,/* 0x60 */
        .tun1_adc = 0,/* 2 Vpp */
        .path1_mode = 3,
};

static struct stb6100_config dw2104a_stb6100_config = {
        .tuner_address = 0x60,
        .refclock = 27000000,
};

static struct stv0900_config dw2104_stv0900_config = {
        .demod_address = 0x68,
        .demod_mode = 0,
        .xtal = 8000000,
        .clkmode = 3,
        .diseqc_mode = 2,
        .tun1_maddress = 0,
        .tun1_adc = 1,/* 1 Vpp */
        .path1_mode = 3,
};

static struct stv6110_config dw2104_stv6110_config = {
        .i2c_address = 0x60,
        .mclk = 16000000,
        .clk_div = 1,
};

static struct stv0900_config prof_7500_stv0900_config = {
        .demod_address = 0x6a,
        .demod_mode = 0,
        .xtal = 27000000,
        .clkmode = 3,/* 0-CLKI, 2-XTALI, else AUTO */
        .diseqc_mode = 2,/* 2/3 PWM */
        .tun1_maddress = 0,/* 0x60 */
        .tun1_adc = 0,/* 2 Vpp */
        .path1_mode = 3,
        .tun1_type = 3,
        .set_lock_led = dw210x_led_ctrl,
};

static struct ds3000_config su3000_ds3000_config = {
        .demod_address = 0x68,
        .ci_mode = 1,
        .set_lock_led = dw210x_led_ctrl,
};

static struct cxd2820r_config cxd2820r_config = {
        .i2c_address = 0x6c, /* (0xd8 >> 1) */
        .ts_mode = 0x38,
        .ts_clock_inv = 1,
};

static struct tda18271_config tda18271_config = {
        .output_opt = TDA18271_OUTPUT_LT_OFF,
        .gate = TDA18271_GATE_DIGITAL,
};

static u8 m88rs2000_inittab[] = {
        DEMOD_WRITE, 0x9a, 0x30,
        DEMOD_WRITE, 0x00, 0x01,
        WRITE_DELAY, 0x19, 0x00,
        DEMOD_WRITE, 0x00, 0x00,
        DEMOD_WRITE, 0x9a, 0xb0,
        DEMOD_WRITE, 0x81, 0xc1,
        DEMOD_WRITE, 0x81, 0x81,
        DEMOD_WRITE, 0x86, 0xc6,
        DEMOD_WRITE, 0x9a, 0x30,
        DEMOD_WRITE, 0xf0, 0x80,
        DEMOD_WRITE, 0xf1, 0xbf,
        DEMOD_WRITE, 0xb0, 0x45,
        DEMOD_WRITE, 0xb2, 0x01,
        DEMOD_WRITE, 0x9a, 0xb0,
        0xff, 0xaa, 0xff
};

static struct m88rs2000_config s421_m88rs2000_config = {
        .demod_addr = 0x68,
        .inittab = m88rs2000_inittab,
};

static int dw2104_frontend_attach(struct dvb_usb_adapter *d)
{
        struct dvb_tuner_ops *tuner_ops = NULL;

        if (demod_probe & 4) {
                d->fe_adap[0].fe = dvb_attach(stv0900_attach, &dw2104a_stv0900_config,
                                              &d->dev->i2c_adap, 0);
                if (d->fe_adap[0].fe) {
                        if (dvb_attach(stb6100_attach, d->fe_adap[0].fe,
                                       &dw2104a_stb6100_config,
                                       &d->dev->i2c_adap)) {
                                tuner_ops = &d->fe_adap[0].fe->ops.tuner_ops;
                                tuner_ops->set_frequency = stb6100_set_freq;
                                tuner_ops->get_frequency = stb6100_get_freq;
                                tuner_ops->set_bandwidth = stb6100_set_bandw;
                                tuner_ops->get_bandwidth = stb6100_get_bandw;
                                d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                                info("Attached STV0900+STB6100!");
                                return 0;
                        }
                }
        }

        if (demod_probe & 2) {
                d->fe_adap[0].fe = dvb_attach(stv0900_attach, &dw2104_stv0900_config,
                                              &d->dev->i2c_adap, 0);
                if (d->fe_adap[0].fe) {
                        if (dvb_attach(stv6110_attach, d->fe_adap[0].fe,
                                       &dw2104_stv6110_config,
                                       &d->dev->i2c_adap)) {
                                d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                                info("Attached STV0900+STV6110A!");
                                return 0;
                        }
                }
        }

        if (demod_probe & 1) {
                d->fe_adap[0].fe = dvb_attach(cx24116_attach, &dw2104_config,
                                              &d->dev->i2c_adap);
                if (d->fe_adap[0].fe) {
                        d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                        info("Attached cx24116!");
                        return 0;
                }
        }

        d->fe_adap[0].fe = dvb_attach(ds3000_attach, &dw2104_ds3000_config,
                                      &d->dev->i2c_adap);
        if (d->fe_adap[0].fe) {
                dvb_attach(ts2020_attach, d->fe_adap[0].fe,
                           &dw2104_ts2020_config, &d->dev->i2c_adap);
                d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                info("Attached DS3000!");
                return 0;
        }

        return -EIO;
}

static struct dvb_usb_device_properties dw2102_properties;
static struct dvb_usb_device_properties dw2104_properties;
static struct dvb_usb_device_properties s6x0_properties;

static int dw2102_frontend_attach(struct dvb_usb_adapter *d)
{
        if (dw2102_properties.i2c_algo == &dw2102_serit_i2c_algo) {
                /*dw2102_properties.adapter->tuner_attach = NULL;*/
                d->fe_adap[0].fe = dvb_attach(si21xx_attach, &serit_sp1511lhb_config,
                                              &d->dev->i2c_adap);
                if (d->fe_adap[0].fe) {
                        d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                        info("Attached si21xx!");
                        return 0;
                }
        }

        if (dw2102_properties.i2c_algo == &dw2102_earda_i2c_algo) {
                d->fe_adap[0].fe = dvb_attach(stv0288_attach, &earda_config,
                                              &d->dev->i2c_adap);
                if (d->fe_adap[0].fe) {
                        if (dvb_attach(stb6000_attach, d->fe_adap[0].fe, 0x61,
                                       &d->dev->i2c_adap)) {
                                d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                                info("Attached stv0288!");
                                return 0;
                        }
                }
        }

        if (dw2102_properties.i2c_algo == &dw2102_i2c_algo) {
                /*dw2102_properties.adapter->tuner_attach = dw2102_tuner_attach;*/
                d->fe_adap[0].fe = dvb_attach(stv0299_attach, &sharp_z0194a_config,
                                              &d->dev->i2c_adap);
                if (d->fe_adap[0].fe) {
                        d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                        info("Attached stv0299!");
                        return 0;
                }
        }
        return -EIO;
}

static int dw3101_frontend_attach(struct dvb_usb_adapter *d)
{
        d->fe_adap[0].fe = dvb_attach(tda10023_attach, &dw3101_tda10023_config,
                                      &d->dev->i2c_adap, 0x48);
        if (d->fe_adap[0].fe) {
                info("Attached tda10023!");
                return 0;
        }
        return -EIO;
}

static int zl100313_frontend_attach(struct dvb_usb_adapter *d)
{
        d->fe_adap[0].fe = dvb_attach(mt312_attach, &zl313_config,
                                      &d->dev->i2c_adap);
        if (d->fe_adap[0].fe) {
                if (dvb_attach(zl10039_attach, d->fe_adap[0].fe, 0x60,
                               &d->dev->i2c_adap)) {
                        d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;
                        info("Attached zl100313+zl10039!");
                        return 0;
                }
        }

        return -EIO;
}

static int stv0288_frontend_attach(struct dvb_usb_adapter *d)
{
        u8 obuf[] = {7, 1};

        d->fe_adap[0].fe = dvb_attach(stv0288_attach, &earda_config,
                                      &d->dev->i2c_adap);

        if (!d->fe_adap[0].fe)
                return -EIO;

        if (dvb_attach(stb6000_attach, d->fe_adap[0].fe, 0x61, &d->dev->i2c_adap) == NULL)
                return -EIO;

        d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;

        dw210x_op_rw(d->dev->udev, 0x8a, 0, 0, obuf, 2, DW210X_WRITE_MSG);

        info("Attached stv0288+stb6000!");

        return 0;
}

static int ds3000_frontend_attach(struct dvb_usb_adapter *d)
{
        struct dw2102_state *st = d->dev->priv;
        u8 obuf[] = {7, 1};

        d->fe_adap[0].fe = dvb_attach(ds3000_attach, &s660_ds3000_config,
                                      &d->dev->i2c_adap);

        if (!d->fe_adap[0].fe)
                return -EIO;

        dvb_attach(ts2020_attach, d->fe_adap[0].fe, &s660_ts2020_config,
                   &d->dev->i2c_adap);

        st->old_set_voltage = d->fe_adap[0].fe->ops.set_voltage;
        d->fe_adap[0].fe->ops.set_voltage = s660_set_voltage;

        dw210x_op_rw(d->dev->udev, 0x8a, 0, 0, obuf, 2, DW210X_WRITE_MSG);

        info("Attached ds3000+ts2020!");

        return 0;
}

static int prof_7500_frontend_attach(struct dvb_usb_adapter *d)
{
        u8 obuf[] = {7, 1};

        d->fe_adap[0].fe = dvb_attach(stv0900_attach, &prof_7500_stv0900_config,
                                      &d->dev->i2c_adap, 0);
        if (!d->fe_adap[0].fe)
                return -EIO;

        d->fe_adap[0].fe->ops.set_voltage = dw210x_set_voltage;

        dw210x_op_rw(d->dev->udev, 0x8a, 0, 0, obuf, 2, DW210X_WRITE_MSG);

        info("Attached STV0900+STB6100A!");

        return 0;
}

static int su3000_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap->dev;
        struct dw2102_state *state = d->priv;

        mutex_lock(&d->data_mutex);

        state->data[0] = 0xe;
        state->data[1] = 0x80;
        state->data[2] = 0;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0xe;
        state->data[1] = 0x02;
        state->data[2] = 1;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");
        msleep(300);

        state->data[0] = 0xe;
        state->data[1] = 0x83;
        state->data[2] = 0;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0xe;
        state->data[1] = 0x83;
        state->data[2] = 1;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0x51;

        if (dvb_usb_generic_rw(d, state->data, 1, state->data, 1, 0) < 0)
                err("command 0x51 transfer failed.");

        mutex_unlock(&d->data_mutex);

        adap->fe_adap[0].fe = dvb_attach(ds3000_attach, &su3000_ds3000_config,
                                         &d->i2c_adap);
        if (!adap->fe_adap[0].fe)
                return -EIO;

        if (dvb_attach(ts2020_attach, adap->fe_adap[0].fe,
                       &dw2104_ts2020_config,
                                &d->i2c_adap)) {
                info("Attached DS3000/TS2020!");
                return 0;
        }

        info("Failed to attach DS3000/TS2020!");
        return -EIO;
}

static int t220_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap->dev;
        struct dw2102_state *state = d->priv;

        mutex_lock(&d->data_mutex);

        state->data[0] = 0xe;
        state->data[1] = 0x87;
        state->data[2] = 0x0;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0xe;
        state->data[1] = 0x86;
        state->data[2] = 1;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0xe;
        state->data[1] = 0x80;
        state->data[2] = 0;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        msleep(50);

        state->data[0] = 0xe;
        state->data[1] = 0x80;
        state->data[2] = 1;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0x51;

        if (dvb_usb_generic_rw(d, state->data, 1, state->data, 1, 0) < 0)
                err("command 0x51 transfer failed.");

        mutex_unlock(&d->data_mutex);

        adap->fe_adap[0].fe = dvb_attach(cxd2820r_attach, &cxd2820r_config,
                                         &d->i2c_adap, NULL);
        if (adap->fe_adap[0].fe) {
                if (dvb_attach(tda18271_attach, adap->fe_adap[0].fe, 0x60,
                               &d->i2c_adap, &tda18271_config)) {
                        info("Attached TDA18271HD/CXD2820R!");
                        return 0;
                }
        }

        info("Failed to attach TDA18271HD/CXD2820R!");
        return -EIO;
}

static int m88rs2000_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap->dev;
        struct dw2102_state *state = d->priv;

        mutex_lock(&d->data_mutex);

        state->data[0] = 0x51;

        if (dvb_usb_generic_rw(d, state->data, 1, state->data, 1, 0) < 0)
                err("command 0x51 transfer failed.");

        mutex_unlock(&d->data_mutex);

        adap->fe_adap[0].fe = dvb_attach(m88rs2000_attach,
                                         &s421_m88rs2000_config,
                                         &d->i2c_adap);

        if (!adap->fe_adap[0].fe)
                return -EIO;

        if (dvb_attach(ts2020_attach, adap->fe_adap[0].fe,
                       &dw2104_ts2020_config,
                                &d->i2c_adap)) {
                info("Attached RS2000/TS2020!");
                return 0;
        }

        info("Failed to attach RS2000/TS2020!");
        return -EIO;
}

static int tt_s2_4600_frontend_attach_probe_demod(struct dvb_usb_device *d,
                                                  const int probe_addr)
{
        struct dw2102_state *state = d->priv;

        state->data[0] = 0x9;
        state->data[1] = 0x1;
        state->data[2] = 0x1;
        state->data[3] = probe_addr;
        state->data[4] = 0x0;

        if (dvb_usb_generic_rw(d, state->data, 5, state->data, 2, 0) < 0) {
                err("i2c probe for address 0x%x failed.", probe_addr);
                return 0;
        }

        if (state->data[0] != 8) /* fail(7) or error, no device at address */
                return 0;

        /* probing successful */
        return 1;
}

static int tt_s2_4600_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap->dev;
        struct dw2102_state *state = d->priv;
        struct i2c_adapter *i2c_adapter;
        struct i2c_client *client;
        struct i2c_board_info board_info;
        struct m88ds3103_platform_data m88ds3103_pdata = {};
        struct ts2020_config ts2020_config = {};
        int demod_addr;

        mutex_lock(&d->data_mutex);

        state->data[0] = 0xe;
        state->data[1] = 0x80;
        state->data[2] = 0x0;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0xe;
        state->data[1] = 0x02;
        state->data[2] = 1;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");
        msleep(300);

        state->data[0] = 0xe;
        state->data[1] = 0x83;
        state->data[2] = 0;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0xe;
        state->data[1] = 0x83;
        state->data[2] = 1;

        if (dvb_usb_generic_rw(d, state->data, 3, state->data, 1, 0) < 0)
                err("command 0x0e transfer failed.");

        state->data[0] = 0x51;

        if (dvb_usb_generic_rw(d, state->data, 1, state->data, 1, 0) < 0)
                err("command 0x51 transfer failed.");

        /* probe for demodulator i2c address */
        demod_addr = -1;
        if (tt_s2_4600_frontend_attach_probe_demod(d, 0x68))
                demod_addr = 0x68;
        else if (tt_s2_4600_frontend_attach_probe_demod(d, 0x69))
                demod_addr = 0x69;
        else if (tt_s2_4600_frontend_attach_probe_demod(d, 0x6a))
                demod_addr = 0x6a;

        mutex_unlock(&d->data_mutex);

        if (demod_addr < 0) {
                err("probing for demodulator failed. Is the external power switched on?");
                return -ENODEV;
        }

        /* attach demod */
        m88ds3103_pdata.clk = 27000000;
        m88ds3103_pdata.i2c_wr_max = 33;
        m88ds3103_pdata.ts_mode = M88DS3103_TS_CI;
        m88ds3103_pdata.ts_clk = 16000;
        m88ds3103_pdata.ts_clk_pol = 0;
        m88ds3103_pdata.spec_inv = 0;
        m88ds3103_pdata.agc = 0x99;
        m88ds3103_pdata.agc_inv = 0;
        m88ds3103_pdata.clk_out = M88DS3103_CLOCK_OUT_ENABLED;
        m88ds3103_pdata.envelope_mode = 0;
        m88ds3103_pdata.lnb_hv_pol = 1;
        m88ds3103_pdata.lnb_en_pol = 0;
        memset(&board_info, 0, sizeof(board_info));
        if (demod_addr == 0x6a)
                strscpy(board_info.type, "m88ds3103b", I2C_NAME_SIZE);
        else
                strscpy(board_info.type, "m88ds3103", I2C_NAME_SIZE);
        board_info.addr = demod_addr;
        board_info.platform_data = &m88ds3103_pdata;
        request_module("m88ds3103");
        client = i2c_new_client_device(&d->i2c_adap, &board_info);
        if (!i2c_client_has_driver(client))
                return -ENODEV;
        if (!try_module_get(client->dev.driver->owner)) {
                i2c_unregister_device(client);
                return -ENODEV;
        }
        adap->fe_adap[0].fe = m88ds3103_pdata.get_dvb_frontend(client);
        i2c_adapter = m88ds3103_pdata.get_i2c_adapter(client);

        state->i2c_client_demod = client;

        /* attach tuner */
        ts2020_config.fe = adap->fe_adap[0].fe;
        memset(&board_info, 0, sizeof(board_info));
        strscpy(board_info.type, "ts2022", I2C_NAME_SIZE);
        board_info.addr = 0x60;
        board_info.platform_data = &ts2020_config;
        request_module("ts2020");
        client = i2c_new_client_device(i2c_adapter, &board_info);

        if (!i2c_client_has_driver(client)) {
                dvb_frontend_detach(adap->fe_adap[0].fe);
                return -ENODEV;
        }

        if (!try_module_get(client->dev.driver->owner)) {
                i2c_unregister_device(client);
                dvb_frontend_detach(adap->fe_adap[0].fe);
                return -ENODEV;
        }

        /* delegate signal strength measurement to tuner */
        adap->fe_adap[0].fe->ops.read_signal_strength =
                        adap->fe_adap[0].fe->ops.tuner_ops.get_rf_strength;

        state->i2c_client_tuner = client;

        /* hook fe: need to resync the slave fifo when signal locks */
        state->fe_read_status = adap->fe_adap[0].fe->ops.read_status;
        adap->fe_adap[0].fe->ops.read_status = tt_s2_4600_read_status;

        state->last_lock = 0;

        return 0;
}

static int dw2102_tuner_attach(struct dvb_usb_adapter *adap)
{
        dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60,
                   &adap->dev->i2c_adap, DVB_PLL_OPERA1);
        return 0;
}

static int dw3101_tuner_attach(struct dvb_usb_adapter *adap)
{
        dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60,
                   &adap->dev->i2c_adap, DVB_PLL_TUA6034);

        return 0;
}

static int dw2102_rc_query(struct dvb_usb_device *d)
{
        u8 key[2];
        struct i2c_msg msg = {
                .addr = DW2102_RC_QUERY,
                .flags = I2C_M_RD,
                .buf = key,
                .len = 2
        };

        if (d->props.i2c_algo->master_xfer(&d->i2c_adap, &msg, 1) == 1) {
                if (msg.buf[0] != 0xff) {
                        deb_rc("%s: rc code: %x, %x\n",
                               __func__, key[0], key[1]);
                        rc_keydown(d->rc_dev, RC_PROTO_UNKNOWN, key[0], 0);
                }
        }

        return 0;
}

static int prof_rc_query(struct dvb_usb_device *d)
{
        u8 key[2];
        struct i2c_msg msg = {
                .addr = DW2102_RC_QUERY,
                .flags = I2C_M_RD,
                .buf = key,
                .len = 2
        };

        if (d->props.i2c_algo->master_xfer(&d->i2c_adap, &msg, 1) == 1) {
                if (msg.buf[0] != 0xff) {
                        deb_rc("%s: rc code: %x, %x\n",
                               __func__, key[0], key[1]);
                        rc_keydown(d->rc_dev, RC_PROTO_UNKNOWN, key[0] ^ 0xff,
                                   0);
                }
        }

        return 0;
}

static int su3000_rc_query(struct dvb_usb_device *d)
{
        u8 key[2];
        struct i2c_msg msg = {
                .addr = DW2102_RC_QUERY,
                .flags = I2C_M_RD,
                .buf = key,
                .len = 2
        };

        if (d->props.i2c_algo->master_xfer(&d->i2c_adap, &msg, 1) == 1) {
                if (msg.buf[0] != 0xff) {
                        deb_rc("%s: rc code: %x, %x\n",
                               __func__, key[0], key[1]);
                        rc_keydown(d->rc_dev, RC_PROTO_RC5,
                                   RC_SCANCODE_RC5(key[1], key[0]), 0);
                }
        }

        return 0;
}

enum dw2102_table_entry {
        CYPRESS_DW2102,
        CYPRESS_DW2101,
        CYPRESS_DW2104,
        TEVII_S650,
        TERRATEC_CINERGY_S,
        CYPRESS_DW3101,
        TEVII_S630,
        PROF_1100,
        TEVII_S660,
        PROF_7500,
        GENIATECH_SU3000,
        HAUPPAUGE_MAX_S2,
        TERRATEC_CINERGY_S2_R1,
        TEVII_S480_1,
        TEVII_S480_2,
        GENIATECH_X3M_SPC1400HD,
        TEVII_S421,
        TEVII_S632,
        TERRATEC_CINERGY_S2_R2,
        TERRATEC_CINERGY_S2_R3,
        TERRATEC_CINERGY_S2_R4,
        TERRATEC_CINERGY_S2_1,
        TERRATEC_CINERGY_S2_2,
        GOTVIEW_SAT_HD,
        GENIATECH_T220,
        TECHNOTREND_CONNECT_S2_4600,
        TEVII_S482_1,
        TEVII_S482_2,
        TEVII_S662
};

static const struct usb_device_id dw2102_table[] = {
        DVB_USB_DEV(CYPRESS, CYPRESS_DW2102),
        DVB_USB_DEV(CYPRESS, CYPRESS_DW2101),
        DVB_USB_DEV(CYPRESS, CYPRESS_DW2104),
        DVB_USB_DEV(TEVII, TEVII_S650),
        DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_S),
        DVB_USB_DEV(CYPRESS, CYPRESS_DW3101),
        DVB_USB_DEV(TEVII, TEVII_S630),
        DVB_USB_DEV(PROF_1, PROF_1100),
        DVB_USB_DEV(TEVII, TEVII_S660),
        DVB_USB_DEV(PROF_2, PROF_7500),
        DVB_USB_DEV(GTEK, GENIATECH_SU3000),
        DVB_USB_DEV(HAUPPAUGE, HAUPPAUGE_MAX_S2),
        DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_S2_R1),
        DVB_USB_DEV(TEVII, TEVII_S480_1),
        DVB_USB_DEV(TEVII, TEVII_S480_2),
        DVB_USB_DEV(GTEK, GENIATECH_X3M_SPC1400HD),
        DVB_USB_DEV(TEVII, TEVII_S421),
        DVB_USB_DEV(TEVII, TEVII_S632),
        DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_S2_R2),
        DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_S2_R3),
        DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_S2_R4),
        DVB_USB_DEV(TERRATEC_2, TERRATEC_CINERGY_S2_1),
        DVB_USB_DEV(TERRATEC_2, TERRATEC_CINERGY_S2_2),
        DVB_USB_DEV(GOTVIEW, GOTVIEW_SAT_HD),
        DVB_USB_DEV(GTEK, GENIATECH_T220),
        DVB_USB_DEV(TECHNOTREND, TECHNOTREND_CONNECT_S2_4600),
        DVB_USB_DEV(TEVII, TEVII_S482_1),
        DVB_USB_DEV(TEVII, TEVII_S482_2),
        DVB_USB_DEV(TEVII, TEVII_S662),
        { }
};

MODULE_DEVICE_TABLE(usb, dw2102_table);

static int dw2102_load_firmware(struct usb_device *dev,
                                const struct firmware *frmwr)
{
        u8 *b, *p;
        int ret = 0, i;
        u8 reset;
        u8 reset16[] = {0, 0, 0, 0, 0, 0, 0};
        const struct firmware *fw;

        switch (le16_to_cpu(dev->descriptor.idProduct)) {
        case 0x2101:
                ret = request_firmware(&fw, DW2101_FIRMWARE, &dev->dev);
                if (ret != 0) {
                        err(err_str, DW2101_FIRMWARE);
                        return ret;
                }
                break;
        default:
                fw = frmwr;
                break;
        }
        info("start downloading DW210X firmware");
        p = kmalloc(fw->size, GFP_KERNEL);
        reset = 1;
        /*stop the CPU*/
        dw210x_op_rw(dev, 0xa0, 0x7f92, 0, &reset, 1, DW210X_WRITE_MSG);
        dw210x_op_rw(dev, 0xa0, 0xe600, 0, &reset, 1, DW210X_WRITE_MSG);

        if (p) {
                memcpy(p, fw->data, fw->size);
                for (i = 0; i < fw->size; i += 0x40) {
                        b = (u8 *)p + i;
                        if (dw210x_op_rw(dev, 0xa0, i, 0, b, 0x40,
                                         DW210X_WRITE_MSG) != 0x40) {
                                err("error while transferring firmware");
                                ret = -EINVAL;
                                break;
                        }
                }
                /* restart the CPU */
                reset = 0;
                if (ret || dw210x_op_rw(dev, 0xa0, 0x7f92, 0, &reset, 1,
                                        DW210X_WRITE_MSG) != 1) {
                        err("could not restart the USB controller CPU.");
                        ret = -EINVAL;
                }
                if (ret || dw210x_op_rw(dev, 0xa0, 0xe600, 0, &reset, 1,
                                        DW210X_WRITE_MSG) != 1) {
                        err("could not restart the USB controller CPU.");
                        ret = -EINVAL;
                }
                /* init registers */
                switch (le16_to_cpu(dev->descriptor.idProduct)) {
                case USB_PID_TEVII_S650:
                        dw2104_properties.rc.core.rc_codes = RC_MAP_TEVII_NEC;
                        fallthrough;
                case USB_PID_CYPRESS_DW2104:
                        reset = 1;
                        dw210x_op_rw(dev, 0xc4, 0x0000, 0, &reset, 1,
                                     DW210X_WRITE_MSG);
                        fallthrough;
                case USB_PID_CYPRESS_DW3101:
                        reset = 0;
                        dw210x_op_rw(dev, 0xbf, 0x0040, 0, &reset, 0,
                                     DW210X_WRITE_MSG);
                        break;
                case USB_PID_TERRATEC_CINERGY_S:
                case USB_PID_CYPRESS_DW2102:
                        dw210x_op_rw(dev, 0xbf, 0x0040, 0, &reset, 0,
                                     DW210X_WRITE_MSG);
                        dw210x_op_rw(dev, 0xb9, 0x0000, 0, &reset16[0], 2,
                                     DW210X_READ_MSG);
                        /* check STV0299 frontend  */
                        dw210x_op_rw(dev, 0xb5, 0, 0, &reset16[0], 2,
                                     DW210X_READ_MSG);
                        if ((reset16[0] == 0xa1) || (reset16[0] == 0x80)) {
                                dw2102_properties.i2c_algo = &dw2102_i2c_algo;
                                dw2102_properties.adapter->fe[0].tuner_attach = &dw2102_tuner_attach;
                                break;
                        }
                        /* check STV0288 frontend  */
                        reset16[0] = 0xd0;
                        reset16[1] = 1;
                        reset16[2] = 0;
                        dw210x_op_rw(dev, 0xc2, 0, 0, &reset16[0], 3,
                                     DW210X_WRITE_MSG);
                        dw210x_op_rw(dev, 0xc3, 0xd1, 0, &reset16[0], 3,
                                     DW210X_READ_MSG);
                        if (reset16[2] == 0x11) {
                                dw2102_properties.i2c_algo = &dw2102_earda_i2c_algo;
                                break;
                        }
                        fallthrough;
                case 0x2101:
                        dw210x_op_rw(dev, 0xbc, 0x0030, 0, &reset16[0], 2,
                                     DW210X_READ_MSG);
                        dw210x_op_rw(dev, 0xba, 0x0000, 0, &reset16[0], 7,
                                     DW210X_READ_MSG);
                        dw210x_op_rw(dev, 0xba, 0x0000, 0, &reset16[0], 7,
                                     DW210X_READ_MSG);
                        dw210x_op_rw(dev, 0xb9, 0x0000, 0, &reset16[0], 2,
                                     DW210X_READ_MSG);
                        break;
                }

                msleep(100);
                kfree(p);
        }

        if (le16_to_cpu(dev->descriptor.idProduct) == 0x2101)
                release_firmware(fw);
        return ret;
}

static struct dvb_usb_device_properties dw2102_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .firmware = DW2102_FIRMWARE,
        .no_reconnect = 1,

        .i2c_algo = &dw2102_serit_i2c_algo,

        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_DM1105_NEC,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_NEC,
                .rc_query = dw2102_rc_query,
        },

        .generic_bulk_ctrl_endpoint = 0x81,
        /* parameter for the MPEG2-data transfer */
        .num_adapters = 1,
        .download_firmware = dw2102_load_firmware,
        .read_mac_address = dw210x_read_mac_address,
        .adapter = {
                {
                .num_frontends = 1,
                .fe = {{
                        .frontend_attach = dw2102_frontend_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        },
                }},
                }
        },
        .num_device_descs = 3,
        .devices = {
                {"DVBWorld DVB-S 2102 USB2.0",
                        {&dw2102_table[CYPRESS_DW2102], NULL},
                        {NULL},
                },
                {"DVBWorld DVB-S 2101 USB2.0",
                        {&dw2102_table[CYPRESS_DW2101], NULL},
                        {NULL},
                },
                {"TerraTec Cinergy S USB",
                        {&dw2102_table[TERRATEC_CINERGY_S], NULL},
                        {NULL},
                },
        }
};

static struct dvb_usb_device_properties dw2104_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .firmware = DW2104_FIRMWARE,
        .no_reconnect = 1,

        .i2c_algo = &dw2104_i2c_algo,
        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_DM1105_NEC,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_NEC,
                .rc_query = dw2102_rc_query,
        },

        .generic_bulk_ctrl_endpoint = 0x81,
        /* parameter for the MPEG2-data transfer */
        .num_adapters = 1,
        .download_firmware = dw2102_load_firmware,
        .read_mac_address = dw210x_read_mac_address,
        .adapter = {
                {
                .num_frontends = 1,
                .fe = {{
                        .frontend_attach = dw2104_frontend_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        },
                }},
                }
        },
        .num_device_descs = 2,
        .devices = {
                { "DVBWorld DW2104 USB2.0",
                        {&dw2102_table[CYPRESS_DW2104], NULL},
                        {NULL},
                },
                { "TeVii S650 USB2.0",
                        {&dw2102_table[TEVII_S650], NULL},
                        {NULL},
                },
        }
};

static struct dvb_usb_device_properties dw3101_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .firmware = DW3101_FIRMWARE,
        .no_reconnect = 1,

        .i2c_algo = &dw3101_i2c_algo,
        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_DM1105_NEC,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_NEC,
                .rc_query = dw2102_rc_query,
        },

        .generic_bulk_ctrl_endpoint = 0x81,
        /* parameter for the MPEG2-data transfer */
        .num_adapters = 1,
        .download_firmware = dw2102_load_firmware,
        .read_mac_address = dw210x_read_mac_address,
        .adapter = {
                {
                .num_frontends = 1,
                .fe = {{
                        .frontend_attach = dw3101_frontend_attach,
                        .tuner_attach = dw3101_tuner_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        },
                }},
                }
        },
        .num_device_descs = 1,
        .devices = {
                { "DVBWorld DVB-C 3101 USB2.0",
                        {&dw2102_table[CYPRESS_DW3101], NULL},
                        {NULL},
                },
        }
};

static struct dvb_usb_device_properties s6x0_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .firmware = S630_FIRMWARE,
        .no_reconnect = 1,

        .i2c_algo = &s6x0_i2c_algo,
        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_TEVII_NEC,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_NEC,
                .rc_query = dw2102_rc_query,
        },

        .generic_bulk_ctrl_endpoint = 0x81,
        .num_adapters = 1,
        .download_firmware = dw2102_load_firmware,
        .read_mac_address = s6x0_read_mac_address,
        .adapter = {
                {
                .num_frontends = 1,
                .fe = {{
                        .frontend_attach = zl100313_frontend_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        },
                }},
                }
        },
        .num_device_descs = 1,
        .devices = {
                {"TeVii S630 USB",
                        {&dw2102_table[TEVII_S630], NULL},
                        {NULL},
                },
        }
};

static struct dvb_usb_device_properties p1100_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .firmware = P1100_FIRMWARE,
        .no_reconnect = 1,

        .i2c_algo = &s6x0_i2c_algo,
        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_TBS_NEC,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_NEC,
                .rc_query = prof_rc_query,
        },

        .generic_bulk_ctrl_endpoint = 0x81,
        .num_adapters = 1,
        .download_firmware = dw2102_load_firmware,
        .read_mac_address = s6x0_read_mac_address,
        .adapter = {
                {
                        .num_frontends = 1,
                        .fe = {{
                                .frontend_attach = stv0288_frontend_attach,
                                .stream = {
                                        .type = USB_BULK,
                                        .count = 8,
                                        .endpoint = 0x82,
                                        .u = {
                                                .bulk = {
                                                        .buffersize = 4096,
                                                }
                                        }
                                },
                        } },
                }
        },
        .num_device_descs = 1,
        .devices = {
                {"Prof 1100 USB ",
                        {&dw2102_table[PROF_1100], NULL},
                        {NULL},
                },
        }
};

static struct dvb_usb_device_properties s660_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .firmware = S660_FIRMWARE,
        .no_reconnect = 1,

        .i2c_algo = &s6x0_i2c_algo,
        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_TEVII_NEC,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_NEC,
                .rc_query = dw2102_rc_query,
        },

        .generic_bulk_ctrl_endpoint = 0x81,
        .num_adapters = 1,
        .download_firmware = dw2102_load_firmware,
        .read_mac_address = s6x0_read_mac_address,
        .adapter = {
                {
                        .num_frontends = 1,
                        .fe = {{
                                .frontend_attach = ds3000_frontend_attach,
                                .stream = {
                                        .type = USB_BULK,
                                        .count = 8,
                                        .endpoint = 0x82,
                                        .u = {
                                                .bulk = {
                                                        .buffersize = 4096,
                                                }
                                        }
                                },
                        } },
                }
        },
        .num_device_descs = 3,
        .devices = {
                {"TeVii S660 USB",
                        {&dw2102_table[TEVII_S660], NULL},
                        {NULL},
                },
                {"TeVii S480.1 USB",
                        {&dw2102_table[TEVII_S480_1], NULL},
                        {NULL},
                },
                {"TeVii S480.2 USB",
                        {&dw2102_table[TEVII_S480_2], NULL},
                        {NULL},
                },
        }
};

static struct dvb_usb_device_properties p7500_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .firmware = P7500_FIRMWARE,
        .no_reconnect = 1,

        .i2c_algo = &s6x0_i2c_algo,
        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_TBS_NEC,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_NEC,
                .rc_query = prof_rc_query,
        },

        .generic_bulk_ctrl_endpoint = 0x81,
        .num_adapters = 1,
        .download_firmware = dw2102_load_firmware,
        .read_mac_address = s6x0_read_mac_address,
        .adapter = {
                {
                        .num_frontends = 1,
                        .fe = {{
                                .frontend_attach = prof_7500_frontend_attach,
                                .stream = {
                                        .type = USB_BULK,
                                        .count = 8,
                                        .endpoint = 0x82,
                                        .u = {
                                                .bulk = {
                                                        .buffersize = 4096,
                                                }
                                        }
                                },
                        } },
                }
        },
        .num_device_descs = 1,
        .devices = {
                {"Prof 7500 USB DVB-S2",
                        {&dw2102_table[PROF_7500], NULL},
                        {NULL},
                },
        }
};

static struct dvb_usb_device_properties su3000_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .power_ctrl = su3000_power_ctrl,
        .num_adapters = 1,
        .identify_state = su3000_identify_state,
        .i2c_algo = &su3000_i2c_algo,

        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_SU3000,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_RC5,
                .rc_query = su3000_rc_query,
        },

        .read_mac_address = su3000_read_mac_address,

        .generic_bulk_ctrl_endpoint = 0x01,

        .adapter = {
                {
                .num_frontends = 1,
                .fe = {{
                        .streaming_ctrl   = su3000_streaming_ctrl,
                        .frontend_attach  = su3000_frontend_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        }
                }},
                }
        },
        .num_device_descs = 9,
        .devices = {
                { "SU3000HD DVB-S USB2.0",
                        { &dw2102_table[GENIATECH_SU3000], NULL },
                        { NULL },
                },
                { "Hauppauge MAX S2 or WinTV NOVA HD USB2.0",
                        { &dw2102_table[HAUPPAUGE_MAX_S2], NULL },
                        { NULL },
                },
                { "Terratec Cinergy S2 USB HD",
                        { &dw2102_table[TERRATEC_CINERGY_S2_R1], NULL },
                        { NULL },
                },
                { "X3M TV SPC1400HD PCI",
                        { &dw2102_table[GENIATECH_X3M_SPC1400HD], NULL },
                        { NULL },
                },
                { "Terratec Cinergy S2 USB HD Rev.2",
                        { &dw2102_table[TERRATEC_CINERGY_S2_R2], NULL },
                        { NULL },
                },
                { "Terratec Cinergy S2 USB HD Rev.3",
                        { &dw2102_table[TERRATEC_CINERGY_S2_R3], NULL },
                        { NULL },
                },
                { "Terratec Cinergy S2 PCIe Dual Port 1",
                        { &dw2102_table[TERRATEC_CINERGY_S2_1], NULL },
                        { NULL },
                },
                { "Terratec Cinergy S2 PCIe Dual Port 2",
                        { &dw2102_table[TERRATEC_CINERGY_S2_2], NULL },
                        { NULL },
                },
                { "GOTVIEW Satellite HD",
                        { &dw2102_table[GOTVIEW_SAT_HD], NULL },
                        { NULL },
                },
        }
};

static struct dvb_usb_device_properties s421_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .power_ctrl = su3000_power_ctrl,
        .num_adapters = 1,
        .identify_state = su3000_identify_state,
        .i2c_algo = &su3000_i2c_algo,

        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_SU3000,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_RC5,
                .rc_query = su3000_rc_query,
        },

        .read_mac_address = su3000_read_mac_address,

        .generic_bulk_ctrl_endpoint = 0x01,

        .adapter = {
                {
                .num_frontends = 1,
                .fe = {{
                        .streaming_ctrl   = su3000_streaming_ctrl,
                        .frontend_attach  = m88rs2000_frontend_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        }
                } },
                }
        },
        .num_device_descs = 2,
        .devices = {
                { "TeVii S421 PCI",
                        { &dw2102_table[TEVII_S421], NULL },
                        { NULL },
                },
                { "TeVii S632 USB",
                        { &dw2102_table[TEVII_S632], NULL },
                        { NULL },
                },
        }
};

static struct dvb_usb_device_properties t220_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .power_ctrl = su3000_power_ctrl,
        .num_adapters = 1,
        .identify_state = su3000_identify_state,
        .i2c_algo = &su3000_i2c_algo,

        .rc.core = {
                .rc_interval = 150,
                .rc_codes = RC_MAP_SU3000,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_RC5,
                .rc_query = su3000_rc_query,
        },

        .read_mac_address = su3000_read_mac_address,

        .generic_bulk_ctrl_endpoint = 0x01,

        .adapter = {
                {
                .num_frontends = 1,
                .fe = { {
                        .streaming_ctrl   = su3000_streaming_ctrl,
                        .frontend_attach  = t220_frontend_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        }
                } },
                }
        },
        .num_device_descs = 1,
        .devices = {
                { "Geniatech T220 DVB-T/T2 USB2.0",
                        { &dw2102_table[GENIATECH_T220], NULL },
                        { NULL },
                },
        }
};

static struct dvb_usb_device_properties tt_s2_4600_properties = {
        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
        .usb_ctrl = DEVICE_SPECIFIC,
        .size_of_priv = sizeof(struct dw2102_state),
        .power_ctrl = su3000_power_ctrl,
        .num_adapters = 1,
        .identify_state = su3000_identify_state,
        .i2c_algo = &su3000_i2c_algo,

        .rc.core = {
                .rc_interval = 250,
                .rc_codes = RC_MAP_TT_1500,
                .module_name = "dw2102",
                .allowed_protos   = RC_PROTO_BIT_RC5,
                .rc_query = su3000_rc_query,
        },

        .read_mac_address = su3000_read_mac_address,

        .generic_bulk_ctrl_endpoint = 0x01,

        .adapter = {
                {
                .num_frontends = 1,
                .fe = {{
                        .streaming_ctrl   = su3000_streaming_ctrl,
                        .frontend_attach  = tt_s2_4600_frontend_attach,
                        .stream = {
                                .type = USB_BULK,
                                .count = 8,
                                .endpoint = 0x82,
                                .u = {
                                        .bulk = {
                                                .buffersize = 4096,
                                        }
                                }
                        }
                } },
                }
        },
        .num_device_descs = 5,
        .devices = {
                { "TechnoTrend TT-connect S2-4600",
                        { &dw2102_table[TECHNOTREND_CONNECT_S2_4600], NULL },
                        { NULL },
                },
                { "TeVii S482 (tuner 1)",
                        { &dw2102_table[TEVII_S482_1], NULL },
                        { NULL },
                },
                { "TeVii S482 (tuner 2)",
                        { &dw2102_table[TEVII_S482_2], NULL },
                        { NULL },
                },
                { "Terratec Cinergy S2 USB BOX",
                        { &dw2102_table[TERRATEC_CINERGY_S2_R4], NULL },
                        { NULL },
                },
                { "TeVii S662",
                        { &dw2102_table[TEVII_S662], NULL },
                        { NULL },
                },
        }
};

static int dw2102_probe(struct usb_interface *intf,
                        const struct usb_device_id *id)
{
        if (!(dvb_usb_device_init(intf, &dw2102_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &dw2104_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &dw3101_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &s6x0_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &p1100_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &s660_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &p7500_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &s421_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &su3000_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &t220_properties,
                                  THIS_MODULE, NULL, adapter_nr) &&
              dvb_usb_device_init(intf, &tt_s2_4600_properties,
                                  THIS_MODULE, NULL, adapter_nr))) {
                return 0;
        }

        return -ENODEV;
}

static void dw2102_disconnect(struct usb_interface *intf)
{
        struct dvb_usb_device *d = usb_get_intfdata(intf);
        struct dw2102_state *st = d->priv;
        struct i2c_client *client;

        /* remove I2C client for tuner */
        client = st->i2c_client_tuner;
        if (client) {
                module_put(client->dev.driver->owner);
                i2c_unregister_device(client);
        }

        /* remove I2C client for demodulator */
        client = st->i2c_client_demod;
        if (client) {
                module_put(client->dev.driver->owner);
                i2c_unregister_device(client);
        }

        dvb_usb_device_exit(intf);
}

static struct usb_driver dw2102_driver = {
        .name = "dw2102",
        .probe = dw2102_probe,
        .disconnect = dw2102_disconnect,
        .id_table = dw2102_table,
};

module_usb_driver(dw2102_driver);

MODULE_AUTHOR("Igor M. Liplianin (c) liplianin@me.by");
MODULE_DESCRIPTION("Driver for DVBWorld DVB-S 2101, 2102, DVB-S2 2104, DVB-C 3101 USB2.0, TeVii S421, S480, S482, S600, S630, S632, S650, TeVii S660, S662, Prof 1100, 7500 USB2.0, Geniatech SU3000, T220, TechnoTrend S2-4600, Terratec Cinergy S2 devices");
MODULE_VERSION("0.1");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(DW2101_FIRMWARE);
MODULE_FIRMWARE(DW2102_FIRMWARE);
MODULE_FIRMWARE(DW2104_FIRMWARE);
MODULE_FIRMWARE(DW3101_FIRMWARE);
MODULE_FIRMWARE(S630_FIRMWARE);
MODULE_FIRMWARE(S660_FIRMWARE);
MODULE_FIRMWARE(P1100_FIRMWARE);
MODULE_FIRMWARE(P7500_FIRMWARE);