root/drivers/media/dvb-frontends/stv090x.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
        STV0900/0903 Multistandard Broadcast Frontend driver
        Copyright (C) Manu Abraham <abraham.manu@gmail.com>

        Copyright (C) ST Microelectronics

*/

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/mutex.h>

#include <linux/dvb/frontend.h>
#include <media/dvb_frontend.h>

#include "stv6110x.h" /* for demodulator internal modes */

#include "stv090x_reg.h"
#include "stv090x.h"
#include "stv090x_priv.h"

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

static unsigned int verbose;
module_param(verbose, int, 0644);

/* internal params node */
struct stv090x_dev {
        /* pointer for internal params, one for each pair of demods */
        struct stv090x_internal         *internal;
        struct stv090x_dev              *next_dev;
};

/* first internal params */
static struct stv090x_dev *stv090x_first_dev;

/* find chip by i2c adapter and i2c address */
static struct stv090x_dev *find_dev(struct i2c_adapter *i2c_adap,
                                        u8 i2c_addr)
{
        struct stv090x_dev *temp_dev = stv090x_first_dev;

        /*
         Search of the last stv0900 chip or
         find it by i2c adapter and i2c address */
        while ((temp_dev != NULL) &&
                ((temp_dev->internal->i2c_adap != i2c_adap) ||
                (temp_dev->internal->i2c_addr != i2c_addr))) {

                temp_dev = temp_dev->next_dev;
        }

        return temp_dev;
}

/* deallocating chip */
static void remove_dev(struct stv090x_internal *internal)
{
        struct stv090x_dev *prev_dev = stv090x_first_dev;
        struct stv090x_dev *del_dev = find_dev(internal->i2c_adap,
                                                internal->i2c_addr);

        if (del_dev != NULL) {
                if (del_dev == stv090x_first_dev) {
                        stv090x_first_dev = del_dev->next_dev;
                } else {
                        while (prev_dev->next_dev != del_dev)
                                prev_dev = prev_dev->next_dev;

                        prev_dev->next_dev = del_dev->next_dev;
                }

                kfree(del_dev);
        }
}

/* allocating new chip */
static struct stv090x_dev *append_internal(struct stv090x_internal *internal)
{
        struct stv090x_dev *new_dev;
        struct stv090x_dev *temp_dev;

        new_dev = kmalloc_obj(struct stv090x_dev);
        if (new_dev != NULL) {
                new_dev->internal = internal;
                new_dev->next_dev = NULL;

                /* append to list */
                if (stv090x_first_dev == NULL) {
                        stv090x_first_dev = new_dev;
                } else {
                        temp_dev = stv090x_first_dev;
                        while (temp_dev->next_dev != NULL)
                                temp_dev = temp_dev->next_dev;

                        temp_dev->next_dev = new_dev;
                }
        }

        return new_dev;
}


/* DVBS1 and DSS C/N Lookup table */
static const struct stv090x_tab stv090x_s1cn_tab[] = {
        {   0, 8917 }, /*  0.0dB */
        {   5, 8801 }, /*  0.5dB */
        {  10, 8667 }, /*  1.0dB */
        {  15, 8522 }, /*  1.5dB */
        {  20, 8355 }, /*  2.0dB */
        {  25, 8175 }, /*  2.5dB */
        {  30, 7979 }, /*  3.0dB */
        {  35, 7763 }, /*  3.5dB */
        {  40, 7530 }, /*  4.0dB */
        {  45, 7282 }, /*  4.5dB */
        {  50, 7026 }, /*  5.0dB */
        {  55, 6781 }, /*  5.5dB */
        {  60, 6514 }, /*  6.0dB */
        {  65, 6241 }, /*  6.5dB */
        {  70, 5965 }, /*  7.0dB */
        {  75, 5690 }, /*  7.5dB */
        {  80, 5424 }, /*  8.0dB */
        {  85, 5161 }, /*  8.5dB */
        {  90, 4902 }, /*  9.0dB */
        {  95, 4654 }, /*  9.5dB */
        { 100, 4417 }, /* 10.0dB */
        { 105, 4186 }, /* 10.5dB */
        { 110, 3968 }, /* 11.0dB */
        { 115, 3757 }, /* 11.5dB */
        { 120, 3558 }, /* 12.0dB */
        { 125, 3366 }, /* 12.5dB */
        { 130, 3185 }, /* 13.0dB */
        { 135, 3012 }, /* 13.5dB */
        { 140, 2850 }, /* 14.0dB */
        { 145, 2698 }, /* 14.5dB */
        { 150, 2550 }, /* 15.0dB */
        { 160, 2283 }, /* 16.0dB */
        { 170, 2042 }, /* 17.0dB */
        { 180, 1827 }, /* 18.0dB */
        { 190, 1636 }, /* 19.0dB */
        { 200, 1466 }, /* 20.0dB */
        { 210, 1315 }, /* 21.0dB */
        { 220, 1181 }, /* 22.0dB */
        { 230, 1064 }, /* 23.0dB */
        { 240,  960 }, /* 24.0dB */
        { 250,  869 }, /* 25.0dB */
        { 260,  792 }, /* 26.0dB */
        { 270,  724 }, /* 27.0dB */
        { 280,  665 }, /* 28.0dB */
        { 290,  616 }, /* 29.0dB */
        { 300,  573 }, /* 30.0dB */
        { 310,  537 }, /* 31.0dB */
        { 320,  507 }, /* 32.0dB */
        { 330,  483 }, /* 33.0dB */
        { 400,  398 }, /* 40.0dB */
        { 450,  381 }, /* 45.0dB */
        { 500,  377 }  /* 50.0dB */
};

/* DVBS2 C/N Lookup table */
static const struct stv090x_tab stv090x_s2cn_tab[] = {
        { -30, 13348 }, /* -3.0dB */
        { -20, 12640 }, /* -2d.0B */
        { -10, 11883 }, /* -1.0dB */
        {   0, 11101 }, /* -0.0dB */
        {   5, 10718 }, /*  0.5dB */
        {  10, 10339 }, /*  1.0dB */
        {  15,  9947 }, /*  1.5dB */
        {  20,  9552 }, /*  2.0dB */
        {  25,  9183 }, /*  2.5dB */
        {  30,  8799 }, /*  3.0dB */
        {  35,  8422 }, /*  3.5dB */
        {  40,  8062 }, /*  4.0dB */
        {  45,  7707 }, /*  4.5dB */
        {  50,  7353 }, /*  5.0dB */
        {  55,  7025 }, /*  5.5dB */
        {  60,  6684 }, /*  6.0dB */
        {  65,  6331 }, /*  6.5dB */
        {  70,  6036 }, /*  7.0dB */
        {  75,  5727 }, /*  7.5dB */
        {  80,  5437 }, /*  8.0dB */
        {  85,  5164 }, /*  8.5dB */
        {  90,  4902 }, /*  9.0dB */
        {  95,  4653 }, /*  9.5dB */
        { 100,  4408 }, /* 10.0dB */
        { 105,  4187 }, /* 10.5dB */
        { 110,  3961 }, /* 11.0dB */
        { 115,  3751 }, /* 11.5dB */
        { 120,  3558 }, /* 12.0dB */
        { 125,  3368 }, /* 12.5dB */
        { 130,  3191 }, /* 13.0dB */
        { 135,  3017 }, /* 13.5dB */
        { 140,  2862 }, /* 14.0dB */
        { 145,  2710 }, /* 14.5dB */
        { 150,  2565 }, /* 15.0dB */
        { 160,  2300 }, /* 16.0dB */
        { 170,  2058 }, /* 17.0dB */
        { 180,  1849 }, /* 18.0dB */
        { 190,  1663 }, /* 19.0dB */
        { 200,  1495 }, /* 20.0dB */
        { 210,  1349 }, /* 21.0dB */
        { 220,  1222 }, /* 22.0dB */
        { 230,  1110 }, /* 23.0dB */
        { 240,  1011 }, /* 24.0dB */
        { 250,   925 }, /* 25.0dB */
        { 260,   853 }, /* 26.0dB */
        { 270,   789 }, /* 27.0dB */
        { 280,   734 }, /* 28.0dB */
        { 290,   690 }, /* 29.0dB */
        { 300,   650 }, /* 30.0dB */
        { 310,   619 }, /* 31.0dB */
        { 320,   593 }, /* 32.0dB */
        { 330,   571 }, /* 33.0dB */
        { 400,   498 }, /* 40.0dB */
        { 450,   484 }, /* 45.0dB */
        { 500,   481 }  /* 50.0dB */
};

/* RF level C/N lookup table */
static const struct stv090x_tab stv090x_rf_tab[] = {
        {  -5, 0xcaa1 }, /*  -5dBm */
        { -10, 0xc229 }, /* -10dBm */
        { -15, 0xbb08 }, /* -15dBm */
        { -20, 0xb4bc }, /* -20dBm */
        { -25, 0xad5a }, /* -25dBm */
        { -30, 0xa298 }, /* -30dBm */
        { -35, 0x98a8 }, /* -35dBm */
        { -40, 0x8389 }, /* -40dBm */
        { -45, 0x59be }, /* -45dBm */
        { -50, 0x3a14 }, /* -50dBm */
        { -55, 0x2d11 }, /* -55dBm */
        { -60, 0x210d }, /* -60dBm */
        { -65, 0xa14f }, /* -65dBm */
        { -70, 0x07aa }  /* -70dBm */
};


static struct stv090x_reg stv0900_initval[] = {

        { STV090x_OUTCFG,               0x00 },
        { STV090x_MODECFG,              0xff },
        { STV090x_AGCRF1CFG,            0x11 },
        { STV090x_AGCRF2CFG,            0x13 },
        { STV090x_TSGENERAL1X,          0x14 },
        { STV090x_TSTTNR2,              0x21 },
        { STV090x_TSTTNR4,              0x21 },
        { STV090x_P2_DISTXCTL,          0x22 },
        { STV090x_P2_F22TX,             0xc0 },
        { STV090x_P2_F22RX,             0xc0 },
        { STV090x_P2_DISRXCTL,          0x00 },
        { STV090x_P2_DMDCFGMD,          0xF9 },
        { STV090x_P2_DEMOD,             0x08 },
        { STV090x_P2_DMDCFG3,           0xc4 },
        { STV090x_P2_CARFREQ,           0xed },
        { STV090x_P2_LDT,               0xd0 },
        { STV090x_P2_LDT2,              0xb8 },
        { STV090x_P2_TMGCFG,            0xd2 },
        { STV090x_P2_TMGTHRISE,         0x20 },
        { STV090x_P1_TMGCFG,            0xd2 },

        { STV090x_P2_TMGTHFALL,         0x00 },
        { STV090x_P2_FECSPY,            0x88 },
        { STV090x_P2_FSPYDATA,          0x3a },
        { STV090x_P2_FBERCPT4,          0x00 },
        { STV090x_P2_FSPYBER,           0x10 },
        { STV090x_P2_ERRCTRL1,          0x35 },
        { STV090x_P2_ERRCTRL2,          0xc1 },
        { STV090x_P2_CFRICFG,           0xf8 },
        { STV090x_P2_NOSCFG,            0x1c },
        { STV090x_P2_DMDTOM,            0x20 },
        { STV090x_P2_CORRELMANT,        0x70 },
        { STV090x_P2_CORRELABS,         0x88 },
        { STV090x_P2_AGC2O,             0x5b },
        { STV090x_P2_AGC2REF,           0x38 },
        { STV090x_P2_CARCFG,            0xe4 },
        { STV090x_P2_ACLC,              0x1A },
        { STV090x_P2_BCLC,              0x09 },
        { STV090x_P2_CARHDR,            0x08 },
        { STV090x_P2_KREFTMG,           0xc1 },
        { STV090x_P2_SFRUPRATIO,        0xf0 },
        { STV090x_P2_SFRLOWRATIO,       0x70 },
        { STV090x_P2_SFRSTEP,           0x58 },
        { STV090x_P2_TMGCFG2,           0x01 },
        { STV090x_P2_CAR2CFG,           0x26 },
        { STV090x_P2_BCLC2S2Q,          0x86 },
        { STV090x_P2_BCLC2S28,          0x86 },
        { STV090x_P2_SMAPCOEF7,         0x77 },
        { STV090x_P2_SMAPCOEF6,         0x85 },
        { STV090x_P2_SMAPCOEF5,         0x77 },
        { STV090x_P2_TSCFGL,            0x20 },
        { STV090x_P2_DMDCFG2,           0x3b },
        { STV090x_P2_MODCODLST0,        0xff },
        { STV090x_P2_MODCODLST1,        0xff },
        { STV090x_P2_MODCODLST2,        0xff },
        { STV090x_P2_MODCODLST3,        0xff },
        { STV090x_P2_MODCODLST4,        0xff },
        { STV090x_P2_MODCODLST5,        0xff },
        { STV090x_P2_MODCODLST6,        0xff },
        { STV090x_P2_MODCODLST7,        0xcc },
        { STV090x_P2_MODCODLST8,        0xcc },
        { STV090x_P2_MODCODLST9,        0xcc },
        { STV090x_P2_MODCODLSTA,        0xcc },
        { STV090x_P2_MODCODLSTB,        0xcc },
        { STV090x_P2_MODCODLSTC,        0xcc },
        { STV090x_P2_MODCODLSTD,        0xcc },
        { STV090x_P2_MODCODLSTE,        0xcc },
        { STV090x_P2_MODCODLSTF,        0xcf },
        { STV090x_P1_DISTXCTL,          0x22 },
        { STV090x_P1_F22TX,             0xc0 },
        { STV090x_P1_F22RX,             0xc0 },
        { STV090x_P1_DISRXCTL,          0x00 },
        { STV090x_P1_DMDCFGMD,          0xf9 },
        { STV090x_P1_DEMOD,             0x08 },
        { STV090x_P1_DMDCFG3,           0xc4 },
        { STV090x_P1_DMDTOM,            0x20 },
        { STV090x_P1_CARFREQ,           0xed },
        { STV090x_P1_LDT,               0xd0 },
        { STV090x_P1_LDT2,              0xb8 },
        { STV090x_P1_TMGCFG,            0xd2 },
        { STV090x_P1_TMGTHRISE,         0x20 },
        { STV090x_P1_TMGTHFALL,         0x00 },
        { STV090x_P1_SFRUPRATIO,        0xf0 },
        { STV090x_P1_SFRLOWRATIO,       0x70 },
        { STV090x_P1_TSCFGL,            0x20 },
        { STV090x_P1_FECSPY,            0x88 },
        { STV090x_P1_FSPYDATA,          0x3a },
        { STV090x_P1_FBERCPT4,          0x00 },
        { STV090x_P1_FSPYBER,           0x10 },
        { STV090x_P1_ERRCTRL1,          0x35 },
        { STV090x_P1_ERRCTRL2,          0xc1 },
        { STV090x_P1_CFRICFG,           0xf8 },
        { STV090x_P1_NOSCFG,            0x1c },
        { STV090x_P1_CORRELMANT,        0x70 },
        { STV090x_P1_CORRELABS,         0x88 },
        { STV090x_P1_AGC2O,             0x5b },
        { STV090x_P1_AGC2REF,           0x38 },
        { STV090x_P1_CARCFG,            0xe4 },
        { STV090x_P1_ACLC,              0x1A },
        { STV090x_P1_BCLC,              0x09 },
        { STV090x_P1_CARHDR,            0x08 },
        { STV090x_P1_KREFTMG,           0xc1 },
        { STV090x_P1_SFRSTEP,           0x58 },
        { STV090x_P1_TMGCFG2,           0x01 },
        { STV090x_P1_CAR2CFG,           0x26 },
        { STV090x_P1_BCLC2S2Q,          0x86 },
        { STV090x_P1_BCLC2S28,          0x86 },
        { STV090x_P1_SMAPCOEF7,         0x77 },
        { STV090x_P1_SMAPCOEF6,         0x85 },
        { STV090x_P1_SMAPCOEF5,         0x77 },
        { STV090x_P1_DMDCFG2,           0x3b },
        { STV090x_P1_MODCODLST0,        0xff },
        { STV090x_P1_MODCODLST1,        0xff },
        { STV090x_P1_MODCODLST2,        0xff },
        { STV090x_P1_MODCODLST3,        0xff },
        { STV090x_P1_MODCODLST4,        0xff },
        { STV090x_P1_MODCODLST5,        0xff },
        { STV090x_P1_MODCODLST6,        0xff },
        { STV090x_P1_MODCODLST7,        0xcc },
        { STV090x_P1_MODCODLST8,        0xcc },
        { STV090x_P1_MODCODLST9,        0xcc },
        { STV090x_P1_MODCODLSTA,        0xcc },
        { STV090x_P1_MODCODLSTB,        0xcc },
        { STV090x_P1_MODCODLSTC,        0xcc },
        { STV090x_P1_MODCODLSTD,        0xcc },
        { STV090x_P1_MODCODLSTE,        0xcc },
        { STV090x_P1_MODCODLSTF,        0xcf },
        { STV090x_GENCFG,               0x1d },
        { STV090x_NBITER_NF4,           0x37 },
        { STV090x_NBITER_NF5,           0x29 },
        { STV090x_NBITER_NF6,           0x37 },
        { STV090x_NBITER_NF7,           0x33 },
        { STV090x_NBITER_NF8,           0x31 },
        { STV090x_NBITER_NF9,           0x2f },
        { STV090x_NBITER_NF10,          0x39 },
        { STV090x_NBITER_NF11,          0x3a },
        { STV090x_NBITER_NF12,          0x29 },
        { STV090x_NBITER_NF13,          0x37 },
        { STV090x_NBITER_NF14,          0x33 },
        { STV090x_NBITER_NF15,          0x2f },
        { STV090x_NBITER_NF16,          0x39 },
        { STV090x_NBITER_NF17,          0x3a },
        { STV090x_NBITERNOERR,          0x04 },
        { STV090x_GAINLLR_NF4,          0x0C },
        { STV090x_GAINLLR_NF5,          0x0F },
        { STV090x_GAINLLR_NF6,          0x11 },
        { STV090x_GAINLLR_NF7,          0x14 },
        { STV090x_GAINLLR_NF8,          0x17 },
        { STV090x_GAINLLR_NF9,          0x19 },
        { STV090x_GAINLLR_NF10,         0x20 },
        { STV090x_GAINLLR_NF11,         0x21 },
        { STV090x_GAINLLR_NF12,         0x0D },
        { STV090x_GAINLLR_NF13,         0x0F },
        { STV090x_GAINLLR_NF14,         0x13 },
        { STV090x_GAINLLR_NF15,         0x1A },
        { STV090x_GAINLLR_NF16,         0x1F },
        { STV090x_GAINLLR_NF17,         0x21 },
        { STV090x_RCCFGH,               0x20 },
        { STV090x_P1_FECM,              0x01 }, /* disable DSS modes */
        { STV090x_P2_FECM,              0x01 }, /* disable DSS modes */
        { STV090x_P1_PRVIT,             0x2F }, /* disable PR 6/7 */
        { STV090x_P2_PRVIT,             0x2F }, /* disable PR 6/7 */
};

static struct stv090x_reg stv0903_initval[] = {
        { STV090x_OUTCFG,               0x00 },
        { STV090x_AGCRF1CFG,            0x11 },
        { STV090x_STOPCLK1,             0x48 },
        { STV090x_STOPCLK2,             0x14 },
        { STV090x_TSTTNR1,              0x27 },
        { STV090x_TSTTNR2,              0x21 },
        { STV090x_P1_DISTXCTL,          0x22 },
        { STV090x_P1_F22TX,             0xc0 },
        { STV090x_P1_F22RX,             0xc0 },
        { STV090x_P1_DISRXCTL,          0x00 },
        { STV090x_P1_DMDCFGMD,          0xF9 },
        { STV090x_P1_DEMOD,             0x08 },
        { STV090x_P1_DMDCFG3,           0xc4 },
        { STV090x_P1_CARFREQ,           0xed },
        { STV090x_P1_TNRCFG2,           0x82 },
        { STV090x_P1_LDT,               0xd0 },
        { STV090x_P1_LDT2,              0xb8 },
        { STV090x_P1_TMGCFG,            0xd2 },
        { STV090x_P1_TMGTHRISE,         0x20 },
        { STV090x_P1_TMGTHFALL,         0x00 },
        { STV090x_P1_SFRUPRATIO,        0xf0 },
        { STV090x_P1_SFRLOWRATIO,       0x70 },
        { STV090x_P1_TSCFGL,            0x20 },
        { STV090x_P1_FECSPY,            0x88 },
        { STV090x_P1_FSPYDATA,          0x3a },
        { STV090x_P1_FBERCPT4,          0x00 },
        { STV090x_P1_FSPYBER,           0x10 },
        { STV090x_P1_ERRCTRL1,          0x35 },
        { STV090x_P1_ERRCTRL2,          0xc1 },
        { STV090x_P1_CFRICFG,           0xf8 },
        { STV090x_P1_NOSCFG,            0x1c },
        { STV090x_P1_DMDTOM,            0x20 },
        { STV090x_P1_CORRELMANT,        0x70 },
        { STV090x_P1_CORRELABS,         0x88 },
        { STV090x_P1_AGC2O,             0x5b },
        { STV090x_P1_AGC2REF,           0x38 },
        { STV090x_P1_CARCFG,            0xe4 },
        { STV090x_P1_ACLC,              0x1A },
        { STV090x_P1_BCLC,              0x09 },
        { STV090x_P1_CARHDR,            0x08 },
        { STV090x_P1_KREFTMG,           0xc1 },
        { STV090x_P1_SFRSTEP,           0x58 },
        { STV090x_P1_TMGCFG2,           0x01 },
        { STV090x_P1_CAR2CFG,           0x26 },
        { STV090x_P1_BCLC2S2Q,          0x86 },
        { STV090x_P1_BCLC2S28,          0x86 },
        { STV090x_P1_SMAPCOEF7,         0x77 },
        { STV090x_P1_SMAPCOEF6,         0x85 },
        { STV090x_P1_SMAPCOEF5,         0x77 },
        { STV090x_P1_DMDCFG2,           0x3b },
        { STV090x_P1_MODCODLST0,        0xff },
        { STV090x_P1_MODCODLST1,        0xff },
        { STV090x_P1_MODCODLST2,        0xff },
        { STV090x_P1_MODCODLST3,        0xff },
        { STV090x_P1_MODCODLST4,        0xff },
        { STV090x_P1_MODCODLST5,        0xff },
        { STV090x_P1_MODCODLST6,        0xff },
        { STV090x_P1_MODCODLST7,        0xcc },
        { STV090x_P1_MODCODLST8,        0xcc },
        { STV090x_P1_MODCODLST9,        0xcc },
        { STV090x_P1_MODCODLSTA,        0xcc },
        { STV090x_P1_MODCODLSTB,        0xcc },
        { STV090x_P1_MODCODLSTC,        0xcc },
        { STV090x_P1_MODCODLSTD,        0xcc },
        { STV090x_P1_MODCODLSTE,        0xcc },
        { STV090x_P1_MODCODLSTF,        0xcf },
        { STV090x_GENCFG,               0x1c },
        { STV090x_NBITER_NF4,           0x37 },
        { STV090x_NBITER_NF5,           0x29 },
        { STV090x_NBITER_NF6,           0x37 },
        { STV090x_NBITER_NF7,           0x33 },
        { STV090x_NBITER_NF8,           0x31 },
        { STV090x_NBITER_NF9,           0x2f },
        { STV090x_NBITER_NF10,          0x39 },
        { STV090x_NBITER_NF11,          0x3a },
        { STV090x_NBITER_NF12,          0x29 },
        { STV090x_NBITER_NF13,          0x37 },
        { STV090x_NBITER_NF14,          0x33 },
        { STV090x_NBITER_NF15,          0x2f },
        { STV090x_NBITER_NF16,          0x39 },
        { STV090x_NBITER_NF17,          0x3a },
        { STV090x_NBITERNOERR,          0x04 },
        { STV090x_GAINLLR_NF4,          0x0C },
        { STV090x_GAINLLR_NF5,          0x0F },
        { STV090x_GAINLLR_NF6,          0x11 },
        { STV090x_GAINLLR_NF7,          0x14 },
        { STV090x_GAINLLR_NF8,          0x17 },
        { STV090x_GAINLLR_NF9,          0x19 },
        { STV090x_GAINLLR_NF10,         0x20 },
        { STV090x_GAINLLR_NF11,         0x21 },
        { STV090x_GAINLLR_NF12,         0x0D },
        { STV090x_GAINLLR_NF13,         0x0F },
        { STV090x_GAINLLR_NF14,         0x13 },
        { STV090x_GAINLLR_NF15,         0x1A },
        { STV090x_GAINLLR_NF16,         0x1F },
        { STV090x_GAINLLR_NF17,         0x21 },
        { STV090x_RCCFGH,               0x20 },
        { STV090x_P1_FECM,              0x01 }, /*disable the DSS mode */
        { STV090x_P1_PRVIT,             0x2f }  /*disable puncture rate 6/7*/
};

static struct stv090x_reg stv0900_cut20_val[] = {

        { STV090x_P2_DMDCFG3,           0xe8 },
        { STV090x_P2_DMDCFG4,           0x10 },
        { STV090x_P2_CARFREQ,           0x38 },
        { STV090x_P2_CARHDR,            0x20 },
        { STV090x_P2_KREFTMG,           0x5a },
        { STV090x_P2_SMAPCOEF7,         0x06 },
        { STV090x_P2_SMAPCOEF6,         0x00 },
        { STV090x_P2_SMAPCOEF5,         0x04 },
        { STV090x_P2_NOSCFG,            0x0c },
        { STV090x_P1_DMDCFG3,           0xe8 },
        { STV090x_P1_DMDCFG4,           0x10 },
        { STV090x_P1_CARFREQ,           0x38 },
        { STV090x_P1_CARHDR,            0x20 },
        { STV090x_P1_KREFTMG,           0x5a },
        { STV090x_P1_SMAPCOEF7,         0x06 },
        { STV090x_P1_SMAPCOEF6,         0x00 },
        { STV090x_P1_SMAPCOEF5,         0x04 },
        { STV090x_P1_NOSCFG,            0x0c },
        { STV090x_GAINLLR_NF4,          0x21 },
        { STV090x_GAINLLR_NF5,          0x21 },
        { STV090x_GAINLLR_NF6,          0x20 },
        { STV090x_GAINLLR_NF7,          0x1F },
        { STV090x_GAINLLR_NF8,          0x1E },
        { STV090x_GAINLLR_NF9,          0x1E },
        { STV090x_GAINLLR_NF10,         0x1D },
        { STV090x_GAINLLR_NF11,         0x1B },
        { STV090x_GAINLLR_NF12,         0x20 },
        { STV090x_GAINLLR_NF13,         0x20 },
        { STV090x_GAINLLR_NF14,         0x20 },
        { STV090x_GAINLLR_NF15,         0x20 },
        { STV090x_GAINLLR_NF16,         0x20 },
        { STV090x_GAINLLR_NF17,         0x21 },
};

static struct stv090x_reg stv0903_cut20_val[] = {
        { STV090x_P1_DMDCFG3,           0xe8 },
        { STV090x_P1_DMDCFG4,           0x10 },
        { STV090x_P1_CARFREQ,           0x38 },
        { STV090x_P1_CARHDR,            0x20 },
        { STV090x_P1_KREFTMG,           0x5a },
        { STV090x_P1_SMAPCOEF7,         0x06 },
        { STV090x_P1_SMAPCOEF6,         0x00 },
        { STV090x_P1_SMAPCOEF5,         0x04 },
        { STV090x_P1_NOSCFG,            0x0c },
        { STV090x_GAINLLR_NF4,          0x21 },
        { STV090x_GAINLLR_NF5,          0x21 },
        { STV090x_GAINLLR_NF6,          0x20 },
        { STV090x_GAINLLR_NF7,          0x1F },
        { STV090x_GAINLLR_NF8,          0x1E },
        { STV090x_GAINLLR_NF9,          0x1E },
        { STV090x_GAINLLR_NF10,         0x1D },
        { STV090x_GAINLLR_NF11,         0x1B },
        { STV090x_GAINLLR_NF12,         0x20 },
        { STV090x_GAINLLR_NF13,         0x20 },
        { STV090x_GAINLLR_NF14,         0x20 },
        { STV090x_GAINLLR_NF15,         0x20 },
        { STV090x_GAINLLR_NF16,         0x20 },
        { STV090x_GAINLLR_NF17,         0x21 }
};

/* Cut 2.0 Long Frame Tracking CR loop */
static struct stv090x_long_frame_crloop stv090x_s2_crl_cut20[] = {
        /* MODCOD  2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff 20MPon 20MPoff 30MPon 30MPoff */
        { STV090x_QPSK_12,  0x1f, 0x3f, 0x1e, 0x3f, 0x3d, 0x1f, 0x3d, 0x3e, 0x3d, 0x1e },
        { STV090x_QPSK_35,  0x2f, 0x3f, 0x2e, 0x2f, 0x3d, 0x0f, 0x0e, 0x2e, 0x3d, 0x0e },
        { STV090x_QPSK_23,  0x2f, 0x3f, 0x2e, 0x2f, 0x0e, 0x0f, 0x0e, 0x1e, 0x3d, 0x3d },
        { STV090x_QPSK_34,  0x3f, 0x3f, 0x3e, 0x1f, 0x0e, 0x3e, 0x0e, 0x1e, 0x3d, 0x3d },
        { STV090x_QPSK_45,  0x3f, 0x3f, 0x3e, 0x1f, 0x0e, 0x3e, 0x0e, 0x1e, 0x3d, 0x3d },
        { STV090x_QPSK_56,  0x3f, 0x3f, 0x3e, 0x1f, 0x0e, 0x3e, 0x0e, 0x1e, 0x3d, 0x3d },
        { STV090x_QPSK_89,  0x3f, 0x3f, 0x3e, 0x1f, 0x1e, 0x3e, 0x0e, 0x1e, 0x3d, 0x3d },
        { STV090x_QPSK_910, 0x3f, 0x3f, 0x3e, 0x1f, 0x1e, 0x3e, 0x0e, 0x1e, 0x3d, 0x3d },
        { STV090x_8PSK_35,  0x3c, 0x3e, 0x1c, 0x2e, 0x0c, 0x1e, 0x2b, 0x2d, 0x1b, 0x1d },
        { STV090x_8PSK_23,  0x1d, 0x3e, 0x3c, 0x2e, 0x2c, 0x1e, 0x0c, 0x2d, 0x2b, 0x1d },
        { STV090x_8PSK_34,  0x0e, 0x3e, 0x3d, 0x2e, 0x0d, 0x1e, 0x2c, 0x2d, 0x0c, 0x1d },
        { STV090x_8PSK_56,  0x2e, 0x3e, 0x1e, 0x2e, 0x2d, 0x1e, 0x3c, 0x2d, 0x2c, 0x1d },
        { STV090x_8PSK_89,  0x3e, 0x3e, 0x1e, 0x2e, 0x3d, 0x1e, 0x0d, 0x2d, 0x3c, 0x1d },
        { STV090x_8PSK_910, 0x3e, 0x3e, 0x1e, 0x2e, 0x3d, 0x1e, 0x1d, 0x2d, 0x0d, 0x1d }
};

/* Cut 3.0 Long Frame Tracking CR loop */
static  struct stv090x_long_frame_crloop stv090x_s2_crl_cut30[] = {
        /* MODCOD  2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff 20MPon 20MPoff 30MPon 30MPoff */
        { STV090x_QPSK_12,  0x3c, 0x2c, 0x0c, 0x2c, 0x1b, 0x2c, 0x1b, 0x1c, 0x0b, 0x3b },
        { STV090x_QPSK_35,  0x0d, 0x0d, 0x0c, 0x0d, 0x1b, 0x3c, 0x1b, 0x1c, 0x0b, 0x3b },
        { STV090x_QPSK_23,  0x1d, 0x0d, 0x0c, 0x1d, 0x2b, 0x3c, 0x1b, 0x1c, 0x0b, 0x3b },
        { STV090x_QPSK_34,  0x1d, 0x1d, 0x0c, 0x1d, 0x2b, 0x3c, 0x1b, 0x1c, 0x0b, 0x3b },
        { STV090x_QPSK_45,  0x2d, 0x1d, 0x1c, 0x1d, 0x2b, 0x3c, 0x2b, 0x0c, 0x1b, 0x3b },
        { STV090x_QPSK_56,  0x2d, 0x1d, 0x1c, 0x1d, 0x2b, 0x3c, 0x2b, 0x0c, 0x1b, 0x3b },
        { STV090x_QPSK_89,  0x3d, 0x2d, 0x1c, 0x1d, 0x3b, 0x3c, 0x2b, 0x0c, 0x1b, 0x3b },
        { STV090x_QPSK_910, 0x3d, 0x2d, 0x1c, 0x1d, 0x3b, 0x3c, 0x2b, 0x0c, 0x1b, 0x3b },
        { STV090x_8PSK_35,  0x39, 0x29, 0x39, 0x19, 0x19, 0x19, 0x19, 0x19, 0x09, 0x19 },
        { STV090x_8PSK_23,  0x2a, 0x39, 0x1a, 0x0a, 0x39, 0x0a, 0x29, 0x39, 0x29, 0x0a },
        { STV090x_8PSK_34,  0x2b, 0x3a, 0x1b, 0x1b, 0x3a, 0x1b, 0x1a, 0x0b, 0x1a, 0x3a },
        { STV090x_8PSK_56,  0x0c, 0x1b, 0x3b, 0x3b, 0x1b, 0x3b, 0x3a, 0x3b, 0x3a, 0x1b },
        { STV090x_8PSK_89,  0x0d, 0x3c, 0x2c, 0x2c, 0x2b, 0x0c, 0x0b, 0x3b, 0x0b, 0x1b },
        { STV090x_8PSK_910, 0x0d, 0x0d, 0x2c, 0x3c, 0x3b, 0x1c, 0x0b, 0x3b, 0x0b, 0x1b }
};

/* Cut 2.0 Long Frame Tracking CR Loop */
static struct stv090x_long_frame_crloop stv090x_s2_apsk_crl_cut20[] = {
        /* MODCOD  2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff 20MPon 20MPoff 30MPon 30MPoff */
        { STV090x_16APSK_23,  0x0c, 0x0c, 0x0c, 0x0c, 0x1d, 0x0c, 0x3c, 0x0c, 0x2c, 0x0c },
        { STV090x_16APSK_34,  0x0c, 0x0c, 0x0c, 0x0c, 0x0e, 0x0c, 0x2d, 0x0c, 0x1d, 0x0c },
        { STV090x_16APSK_45,  0x0c, 0x0c, 0x0c, 0x0c, 0x1e, 0x0c, 0x3d, 0x0c, 0x2d, 0x0c },
        { STV090x_16APSK_56,  0x0c, 0x0c, 0x0c, 0x0c, 0x1e, 0x0c, 0x3d, 0x0c, 0x2d, 0x0c },
        { STV090x_16APSK_89,  0x0c, 0x0c, 0x0c, 0x0c, 0x2e, 0x0c, 0x0e, 0x0c, 0x3d, 0x0c },
        { STV090x_16APSK_910, 0x0c, 0x0c, 0x0c, 0x0c, 0x2e, 0x0c, 0x0e, 0x0c, 0x3d, 0x0c },
        { STV090x_32APSK_34,  0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c },
        { STV090x_32APSK_45,  0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c },
        { STV090x_32APSK_56,  0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c },
        { STV090x_32APSK_89,  0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c },
        { STV090x_32APSK_910, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c }
};

/* Cut 3.0 Long Frame Tracking CR Loop */
static struct stv090x_long_frame_crloop stv090x_s2_apsk_crl_cut30[] = {
        /* MODCOD  2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff 20MPon 20MPoff 30MPon 30MPoff */
        { STV090x_16APSK_23,  0x0a, 0x0a, 0x0a, 0x0a, 0x1a, 0x0a, 0x3a, 0x0a, 0x2a, 0x0a },
        { STV090x_16APSK_34,  0x0a, 0x0a, 0x0a, 0x0a, 0x0b, 0x0a, 0x3b, 0x0a, 0x1b, 0x0a },
        { STV090x_16APSK_45,  0x0a, 0x0a, 0x0a, 0x0a, 0x1b, 0x0a, 0x3b, 0x0a, 0x2b, 0x0a },
        { STV090x_16APSK_56,  0x0a, 0x0a, 0x0a, 0x0a, 0x1b, 0x0a, 0x3b, 0x0a, 0x2b, 0x0a },
        { STV090x_16APSK_89,  0x0a, 0x0a, 0x0a, 0x0a, 0x2b, 0x0a, 0x0c, 0x0a, 0x3b, 0x0a },
        { STV090x_16APSK_910, 0x0a, 0x0a, 0x0a, 0x0a, 0x2b, 0x0a, 0x0c, 0x0a, 0x3b, 0x0a },
        { STV090x_32APSK_34,  0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a },
        { STV090x_32APSK_45,  0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a },
        { STV090x_32APSK_56,  0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a },
        { STV090x_32APSK_89,  0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a },
        { STV090x_32APSK_910, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a }
};

static struct stv090x_long_frame_crloop stv090x_s2_lowqpsk_crl_cut20[] = {
        /* MODCOD  2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff 20MPon 20MPoff 30MPon 30MPoff */
        { STV090x_QPSK_14,  0x0f, 0x3f, 0x0e, 0x3f, 0x2d, 0x2f, 0x2d, 0x1f, 0x3d, 0x3e },
        { STV090x_QPSK_13,  0x0f, 0x3f, 0x0e, 0x3f, 0x2d, 0x2f, 0x3d, 0x0f, 0x3d, 0x2e },
        { STV090x_QPSK_25,  0x1f, 0x3f, 0x1e, 0x3f, 0x3d, 0x1f, 0x3d, 0x3e, 0x3d, 0x2e }
};

static struct stv090x_long_frame_crloop stv090x_s2_lowqpsk_crl_cut30[] = {
        /* MODCOD  2MPon 2MPoff 5MPon 5MPoff 10MPon 10MPoff 20MPon 20MPoff 30MPon 30MPoff */
        { STV090x_QPSK_14,  0x0c, 0x3c, 0x0b, 0x3c, 0x2a, 0x2c, 0x2a, 0x1c, 0x3a, 0x3b },
        { STV090x_QPSK_13,  0x0c, 0x3c, 0x0b, 0x3c, 0x2a, 0x2c, 0x3a, 0x0c, 0x3a, 0x2b },
        { STV090x_QPSK_25,  0x1c, 0x3c, 0x1b, 0x3c, 0x3a, 0x1c, 0x3a, 0x3b, 0x3a, 0x2b }
};

/* Cut 2.0 Short Frame Tracking CR Loop */
static struct stv090x_short_frame_crloop stv090x_s2_short_crl_cut20[] = {
        /* MODCOD         2M    5M    10M   20M   30M */
        { STV090x_QPSK,   0x2f, 0x2e, 0x0e, 0x0e, 0x3d },
        { STV090x_8PSK,   0x3e, 0x0e, 0x2d, 0x0d, 0x3c },
        { STV090x_16APSK, 0x1e, 0x1e, 0x1e, 0x3d, 0x2d },
        { STV090x_32APSK, 0x1e, 0x1e, 0x1e, 0x3d, 0x2d }
};

/* Cut 3.0 Short Frame Tracking CR Loop */
static struct stv090x_short_frame_crloop stv090x_s2_short_crl_cut30[] = {
        /* MODCOD         2M    5M    10M   20M   30M */
        { STV090x_QPSK,   0x2C, 0x2B, 0x0B, 0x0B, 0x3A },
        { STV090x_8PSK,   0x3B, 0x0B, 0x2A, 0x0A, 0x39 },
        { STV090x_16APSK, 0x1B, 0x1B, 0x1B, 0x3A, 0x2A },
        { STV090x_32APSK, 0x1B, 0x1B, 0x1B, 0x3A, 0x2A }
};

static inline s32 comp2(s32 __x, s32 __width)
{
        if (__width == 32)
                return __x;
        else
                return (__x >= (1 << (__width - 1))) ? (__x - (1 << __width)) : __x;
}

static int stv090x_read_reg(struct stv090x_state *state, unsigned int reg)
{
        const struct stv090x_config *config = state->config;
        int ret;

        u8 b0[] = { reg >> 8, reg & 0xff };
        u8 buf;

        struct i2c_msg msg[] = {
                { .addr = config->address, .flags       = 0,            .buf = b0,   .len = 2 },
                { .addr = config->address, .flags       = I2C_M_RD,     .buf = &buf, .len = 1 }
        };

        ret = i2c_transfer(state->i2c, msg, 2);
        if (ret != 2) {
                if (ret != -ERESTARTSYS)
                        dprintk(FE_ERROR, 1,
                                "Read error, Reg=[0x%02x], Status=%d",
                                reg, ret);

                return ret < 0 ? ret : -EREMOTEIO;
        }
        if (unlikely(*state->verbose >= FE_DEBUGREG))
                dprintk(FE_ERROR, 1, "Reg=[0x%02x], data=%02x",
                        reg, buf);

        return (unsigned int) buf;
}

static int stv090x_write_regs(struct stv090x_state *state, unsigned int reg, u8 *data, u32 count)
{
        const struct stv090x_config *config = state->config;
        int ret;
        u8 buf[MAX_XFER_SIZE];
        struct i2c_msg i2c_msg = { .addr = config->address, .flags = 0, .buf = buf, .len = 2 + count };

        if (2 + count > sizeof(buf)) {
                printk(KERN_WARNING
                       "%s: i2c wr reg=%04x: len=%d is too big!\n",
                       KBUILD_MODNAME, reg, count);
                return -EINVAL;
        }

        buf[0] = reg >> 8;
        buf[1] = reg & 0xff;
        memcpy(&buf[2], data, count);

        dprintk(FE_DEBUGREG, 1, "%s [0x%04x]: %*ph",
                __func__, reg, count, data);

        ret = i2c_transfer(state->i2c, &i2c_msg, 1);
        if (ret != 1) {
                if (ret != -ERESTARTSYS)
                        dprintk(FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d",
                                reg, data[0], count, ret);
                return ret < 0 ? ret : -EREMOTEIO;
        }

        return 0;
}

static int stv090x_write_reg(struct stv090x_state *state, unsigned int reg, u8 data)
{
        u8 tmp = data; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */

        return stv090x_write_regs(state, reg, &tmp, 1);
}

static inline void stv090x_tuner_i2c_lock(struct stv090x_state *state)
{
        if (state->config->tuner_i2c_lock)
                state->config->tuner_i2c_lock(&state->frontend, 1);
        else
                mutex_lock(&state->internal->tuner_lock);
}

static inline void stv090x_tuner_i2c_unlock(struct stv090x_state *state)
{
        if (state->config->tuner_i2c_lock)
                state->config->tuner_i2c_lock(&state->frontend, 0);
        else
                mutex_unlock(&state->internal->tuner_lock);
}

static int stv090x_i2c_gate_ctrl(struct stv090x_state *state, int enable)
{
        u32 reg;

        /*
         * NOTE! A lock is used as a FSM to control the state in which
         * access is serialized between two tuners on the same demod.
         * This has nothing to do with a lock to protect a critical section
         * which may in some other cases be confused with protecting I/O
         * access to the demodulator gate.
         * In case of any error, the lock is unlocked and exit within the
         * relevant operations themselves.
         */
        if (enable)
                stv090x_tuner_i2c_lock(state);

        reg = STV090x_READ_DEMOD(state, I2CRPT);
        if (enable) {
                dprintk(FE_DEBUG, 1, "Enable Gate");
                STV090x_SETFIELD_Px(reg, I2CT_ON_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, I2CRPT, reg) < 0)
                        goto err;

        } else {
                dprintk(FE_DEBUG, 1, "Disable Gate");
                STV090x_SETFIELD_Px(reg, I2CT_ON_FIELD, 0);
                if ((STV090x_WRITE_DEMOD(state, I2CRPT, reg)) < 0)
                        goto err;
        }

        if (!enable)
                stv090x_tuner_i2c_unlock(state);

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        stv090x_tuner_i2c_unlock(state);
        return -1;
}

static void stv090x_get_lock_tmg(struct stv090x_state *state)
{
        switch (state->algo) {
        case STV090x_BLIND_SEARCH:
                dprintk(FE_DEBUG, 1, "Blind Search");
                if (state->srate <= 1500000) {  /*10Msps< SR <=15Msps*/
                        state->DemodTimeout = 1500;
                        state->FecTimeout = 400;
                } else if (state->srate <= 5000000) {  /*10Msps< SR <=15Msps*/
                        state->DemodTimeout = 1000;
                        state->FecTimeout = 300;
                } else {  /*SR >20Msps*/
                        state->DemodTimeout = 700;
                        state->FecTimeout = 100;
                }
                break;

        case STV090x_COLD_SEARCH:
        case STV090x_WARM_SEARCH:
        default:
                dprintk(FE_DEBUG, 1, "Normal Search");
                if (state->srate <= 1000000) {  /*SR <=1Msps*/
                        state->DemodTimeout = 4500;
                        state->FecTimeout = 1700;
                } else if (state->srate <= 2000000) { /*1Msps < SR <= 2Msps */
                        state->DemodTimeout = 2500;
                        state->FecTimeout = 1100;
                } else if (state->srate <= 5000000) { /*2Msps < SR <= 5Msps */
                        state->DemodTimeout = 1000;
                        state->FecTimeout = 550;
                } else if (state->srate <= 10000000) { /*5Msps < SR <= 10Msps */
                        state->DemodTimeout = 700;
                        state->FecTimeout = 250;
                } else if (state->srate <= 20000000) { /*10Msps < SR <= 20Msps */
                        state->DemodTimeout = 400;
                        state->FecTimeout = 130;
                } else {   /*SR >20Msps*/
                        state->DemodTimeout = 300;
                        state->FecTimeout = 100;
                }
                break;
        }

        if (state->algo == STV090x_WARM_SEARCH)
                state->DemodTimeout /= 2;
}

static int stv090x_set_srate(struct stv090x_state *state, u32 srate)
{
        u32 sym;

        if (srate > 60000000) {
                sym  = (srate << 4); /* SR * 2^16 / master_clk */
                sym /= (state->internal->mclk >> 12);
        } else if (srate > 6000000) {
                sym  = (srate << 6);
                sym /= (state->internal->mclk >> 10);
        } else {
                sym  = (srate << 9);
                sym /= (state->internal->mclk >> 7);
        }

        if (STV090x_WRITE_DEMOD(state, SFRINIT1, (sym >> 8) & 0x7f) < 0) /* MSB */
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRINIT0, (sym & 0xff)) < 0) /* LSB */
                goto err;

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_set_max_srate(struct stv090x_state *state, u32 clk, u32 srate)
{
        u32 sym;

        srate = 105 * (srate / 100);
        if (srate > 60000000) {
                sym  = (srate << 4); /* SR * 2^16 / master_clk */
                sym /= (state->internal->mclk >> 12);
        } else if (srate > 6000000) {
                sym  = (srate << 6);
                sym /= (state->internal->mclk >> 10);
        } else {
                sym  = (srate << 9);
                sym /= (state->internal->mclk >> 7);
        }

        if (sym < 0x7fff) {
                if (STV090x_WRITE_DEMOD(state, SFRUP1, (sym >> 8) & 0x7f) < 0) /* MSB */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, SFRUP0, sym & 0xff) < 0) /* LSB */
                        goto err;
        } else {
                if (STV090x_WRITE_DEMOD(state, SFRUP1, 0x7f) < 0) /* MSB */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, SFRUP0, 0xff) < 0) /* LSB */
                        goto err;
        }

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_set_min_srate(struct stv090x_state *state, u32 clk, u32 srate)
{
        u32 sym;

        srate = 95 * (srate / 100);
        if (srate > 60000000) {
                sym  = (srate << 4); /* SR * 2^16 / master_clk */
                sym /= (state->internal->mclk >> 12);
        } else if (srate > 6000000) {
                sym  = (srate << 6);
                sym /= (state->internal->mclk >> 10);
        } else {
                sym  = (srate << 9);
                sym /= (state->internal->mclk >> 7);
        }

        if (STV090x_WRITE_DEMOD(state, SFRLOW1, ((sym >> 8) & 0x7f)) < 0) /* MSB */
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRLOW0, (sym & 0xff)) < 0) /* LSB */
                goto err;
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static u32 stv090x_car_width(u32 srate, enum stv090x_rolloff rolloff)
{
        u32 ro;

        switch (rolloff) {
        case STV090x_RO_20:
                ro = 20;
                break;
        case STV090x_RO_25:
                ro = 25;
                break;
        case STV090x_RO_35:
        default:
                ro = 35;
                break;
        }

        return srate + (srate * ro) / 100;
}

static int stv090x_set_vit_thacq(struct stv090x_state *state)
{
        if (STV090x_WRITE_DEMOD(state, VTH12, 0x96) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH23, 0x64) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH34, 0x36) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH56, 0x23) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH67, 0x1e) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH78, 0x19) < 0)
                goto err;
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_set_vit_thtracq(struct stv090x_state *state)
{
        if (STV090x_WRITE_DEMOD(state, VTH12, 0xd0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH23, 0x7d) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH34, 0x53) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH56, 0x2f) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH67, 0x24) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, VTH78, 0x1f) < 0)
                goto err;
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_set_viterbi(struct stv090x_state *state)
{
        switch (state->search_mode) {
        case STV090x_SEARCH_AUTO:
                if (STV090x_WRITE_DEMOD(state, FECM, 0x10) < 0) /* DVB-S and DVB-S2 */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, PRVIT, 0x3f) < 0) /* all puncture rate */
                        goto err;
                break;
        case STV090x_SEARCH_DVBS1:
                if (STV090x_WRITE_DEMOD(state, FECM, 0x00) < 0) /* disable DSS */
                        goto err;
                switch (state->fec) {
                case STV090x_PR12:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x01) < 0)
                                goto err;
                        break;

                case STV090x_PR23:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x02) < 0)
                                goto err;
                        break;

                case STV090x_PR34:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x04) < 0)
                                goto err;
                        break;

                case STV090x_PR56:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x08) < 0)
                                goto err;
                        break;

                case STV090x_PR78:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x20) < 0)
                                goto err;
                        break;

                default:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x2f) < 0) /* all */
                                goto err;
                        break;
                }
                break;
        case STV090x_SEARCH_DSS:
                if (STV090x_WRITE_DEMOD(state, FECM, 0x80) < 0)
                        goto err;
                switch (state->fec) {
                case STV090x_PR12:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x01) < 0)
                                goto err;
                        break;

                case STV090x_PR23:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x02) < 0)
                                goto err;
                        break;

                case STV090x_PR67:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x10) < 0)
                                goto err;
                        break;

                default:
                        if (STV090x_WRITE_DEMOD(state, PRVIT, 0x13) < 0) /* 1/2, 2/3, 6/7 */
                                goto err;
                        break;
                }
                break;
        default:
                break;
        }
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_stop_modcod(struct stv090x_state *state)
{
        if (STV090x_WRITE_DEMOD(state, MODCODLST0, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST1, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST2, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST3, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST4, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST5, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST6, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST7, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST8, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST9, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTA, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTB, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTC, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTD, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTE, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTF, 0xff) < 0)
                goto err;
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_activate_modcod(struct stv090x_state *state)
{
        if (STV090x_WRITE_DEMOD(state, MODCODLST0, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST1, 0xfc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST2, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST3, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST4, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST5, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST6, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST7, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST8, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST9, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTA, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTB, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTC, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTD, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTE, 0xcc) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTF, 0xcf) < 0)
                goto err;

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_activate_modcod_single(struct stv090x_state *state)
{

        if (STV090x_WRITE_DEMOD(state, MODCODLST0, 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST1, 0xf0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST2, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST3, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST4, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST5, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST6, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST7, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST8, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLST9, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTA, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTB, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTC, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTD, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTE, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, MODCODLSTF, 0x0f) < 0)
                goto err;

        return 0;

err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_vitclk_ctl(struct stv090x_state *state, int enable)
{
        u32 reg;

        switch (state->demod) {
        case STV090x_DEMODULATOR_0:
                mutex_lock(&state->internal->demod_lock);
                reg = stv090x_read_reg(state, STV090x_STOPCLK2);
                STV090x_SETFIELD(reg, STOP_CLKVIT1_FIELD, enable);
                if (stv090x_write_reg(state, STV090x_STOPCLK2, reg) < 0)
                        goto err;
                mutex_unlock(&state->internal->demod_lock);
                break;

        case STV090x_DEMODULATOR_1:
                mutex_lock(&state->internal->demod_lock);
                reg = stv090x_read_reg(state, STV090x_STOPCLK2);
                STV090x_SETFIELD(reg, STOP_CLKVIT2_FIELD, enable);
                if (stv090x_write_reg(state, STV090x_STOPCLK2, reg) < 0)
                        goto err;
                mutex_unlock(&state->internal->demod_lock);
                break;

        default:
                dprintk(FE_ERROR, 1, "Wrong demodulator!");
                break;
        }
        return 0;
err:
        mutex_unlock(&state->internal->demod_lock);
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_dvbs_track_crl(struct stv090x_state *state)
{
        if (state->internal->dev_ver >= 0x30) {
                /* Set ACLC BCLC optimised value vs SR */
                if (state->srate >= 15000000) {
                        if (STV090x_WRITE_DEMOD(state, ACLC, 0x2b) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, BCLC, 0x1a) < 0)
                                goto err;
                } else if ((state->srate >= 7000000) && (15000000 > state->srate)) {
                        if (STV090x_WRITE_DEMOD(state, ACLC, 0x0c) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, BCLC, 0x1b) < 0)
                                goto err;
                } else if (state->srate < 7000000) {
                        if (STV090x_WRITE_DEMOD(state, ACLC, 0x2c) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, BCLC, 0x1c) < 0)
                                goto err;
                }

        } else {
                /* Cut 2.0 */
                if (STV090x_WRITE_DEMOD(state, ACLC, 0x1a) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, BCLC, 0x09) < 0)
                        goto err;
        }
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_delivery_search(struct stv090x_state *state)
{
        u32 reg;

        switch (state->search_mode) {
        case STV090x_SEARCH_DVBS1:
        case STV090x_SEARCH_DSS:
                reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 1);
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 0);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;

                /* Activate Viterbi decoder in legacy search,
                 * do not use FRESVIT1, might impact VITERBI2
                 */
                if (stv090x_vitclk_ctl(state, 0) < 0)
                        goto err;

                if (stv090x_dvbs_track_crl(state) < 0)
                        goto err;

                if (STV090x_WRITE_DEMOD(state, CAR2CFG, 0x22) < 0) /* disable DVB-S2 */
                        goto err;

                if (stv090x_set_vit_thacq(state) < 0)
                        goto err;
                if (stv090x_set_viterbi(state) < 0)
                        goto err;
                break;

        case STV090x_SEARCH_DVBS2:
                reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 0);
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 0);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;
                STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 1);
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;

                if (stv090x_vitclk_ctl(state, 1) < 0)
                        goto err;

                if (STV090x_WRITE_DEMOD(state, ACLC, 0x1a) < 0) /* stop DVB-S CR loop */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, BCLC, 0x09) < 0)
                        goto err;

                if (state->internal->dev_ver <= 0x20) {
                        /* enable S2 carrier loop */
                        if (STV090x_WRITE_DEMOD(state, CAR2CFG, 0x26) < 0)
                                goto err;
                } else {
                        /* > Cut 3: Stop carrier 3 */
                        if (STV090x_WRITE_DEMOD(state, CAR2CFG, 0x66) < 0)
                                goto err;
                }

                if (state->demod_mode != STV090x_SINGLE) {
                        /* Cut 2: enable link during search */
                        if (stv090x_activate_modcod(state) < 0)
                                goto err;
                } else {
                        /* Single demodulator
                         * Authorize SHORT and LONG frames,
                         * QPSK, 8PSK, 16APSK and 32APSK
                         */
                        if (stv090x_activate_modcod_single(state) < 0)
                                goto err;
                }

                if (stv090x_set_vit_thtracq(state) < 0)
                        goto err;
                break;

        case STV090x_SEARCH_AUTO:
        default:
                /* enable DVB-S2 and DVB-S2 in Auto MODE */
                reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 0);
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 0);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;
                STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 1);
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;

                if (stv090x_vitclk_ctl(state, 0) < 0)
                        goto err;

                if (stv090x_dvbs_track_crl(state) < 0)
                        goto err;

                if (state->internal->dev_ver <= 0x20) {
                        /* enable S2 carrier loop */
                        if (STV090x_WRITE_DEMOD(state, CAR2CFG, 0x26) < 0)
                                goto err;
                } else {
                        /* > Cut 3: Stop carrier 3 */
                        if (STV090x_WRITE_DEMOD(state, CAR2CFG, 0x66) < 0)
                                goto err;
                }

                if (state->demod_mode != STV090x_SINGLE) {
                        /* Cut 2: enable link during search */
                        if (stv090x_activate_modcod(state) < 0)
                                goto err;
                } else {
                        /* Single demodulator
                         * Authorize SHORT and LONG frames,
                         * QPSK, 8PSK, 16APSK and 32APSK
                         */
                        if (stv090x_activate_modcod_single(state) < 0)
                                goto err;
                }

                if (stv090x_set_vit_thacq(state) < 0)
                        goto err;

                if (stv090x_set_viterbi(state) < 0)
                        goto err;
                break;
        }
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_start_search(struct stv090x_state *state)
{
        u32 reg, freq_abs;
        s16 freq;

        /* Reset demodulator */
        reg = STV090x_READ_DEMOD(state, DMDISTATE);
        STV090x_SETFIELD_Px(reg, I2C_DEMOD_MODE_FIELD, 0x1f);
        if (STV090x_WRITE_DEMOD(state, DMDISTATE, reg) < 0)
                goto err;

        if (state->internal->dev_ver <= 0x20) {
                if (state->srate <= 5000000) {
                        if (STV090x_WRITE_DEMOD(state, CARCFG, 0x44) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CFRUP1, 0x0f) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CFRUP0, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CFRLOW1, 0xf0) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CFRLOW0, 0x00) < 0)
                                goto err;

                        /*enlarge the timing bandwidth for Low SR*/
                        if (STV090x_WRITE_DEMOD(state, RTCS2, 0x68) < 0)
                                goto err;
                } else {
                        /* If the symbol rate is >5 Msps
                        Set The carrier search up and low to auto mode */
                        if (STV090x_WRITE_DEMOD(state, CARCFG, 0xc4) < 0)
                                goto err;
                        /*reduce the timing bandwidth for high SR*/
                        if (STV090x_WRITE_DEMOD(state, RTCS2, 0x44) < 0)
                                goto err;
                }
        } else {
                /* >= Cut 3 */
                if (state->srate <= 5000000) {
                        /* enlarge the timing bandwidth for Low SR */
                        STV090x_WRITE_DEMOD(state, RTCS2, 0x68);
                } else {
                        /* reduce timing bandwidth for high SR */
                        STV090x_WRITE_DEMOD(state, RTCS2, 0x44);
                }

                /* Set CFR min and max to manual mode */
                STV090x_WRITE_DEMOD(state, CARCFG, 0x46);

                if (state->algo == STV090x_WARM_SEARCH) {
                        /* WARM Start
                         * CFR min = -1MHz,
                         * CFR max = +1MHz
                         */
                        freq_abs  = 1000 << 16;
                        freq_abs /= (state->internal->mclk / 1000);
                        freq      = (s16) freq_abs;
                } else {
                        /* COLD Start
                         * CFR min =- (SearchRange / 2 + 600KHz)
                         * CFR max = +(SearchRange / 2 + 600KHz)
                         * (600KHz for the tuner step size)
                         */
                        freq_abs  = (state->search_range / 2000) + 600;
                        freq_abs  = freq_abs << 16;
                        freq_abs /= (state->internal->mclk / 1000);
                        freq      = (s16) freq_abs;
                }

                if (STV090x_WRITE_DEMOD(state, CFRUP1, MSB(freq)) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRUP0, LSB(freq)) < 0)
                        goto err;

                freq *= -1;

                if (STV090x_WRITE_DEMOD(state, CFRLOW1, MSB(freq)) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRLOW0, LSB(freq)) < 0)
                        goto err;

        }

        if (STV090x_WRITE_DEMOD(state, CFRINIT1, 0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, CFRINIT0, 0) < 0)
                goto err;

        if (state->internal->dev_ver >= 0x20) {
                if (STV090x_WRITE_DEMOD(state, EQUALCFG, 0x41) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, FFECFG, 0x41) < 0)
                        goto err;

                if ((state->search_mode == STV090x_SEARCH_DVBS1)        ||
                        (state->search_mode == STV090x_SEARCH_DSS)      ||
                        (state->search_mode == STV090x_SEARCH_AUTO)) {

                        if (STV090x_WRITE_DEMOD(state, VITSCALE, 0x82) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, VAVSRVIT, 0x00) < 0)
                                goto err;
                }
        }

        if (STV090x_WRITE_DEMOD(state, SFRSTEP, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGTHRISE, 0xe0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGTHFALL, 0xc0) < 0)
                goto err;

        reg = STV090x_READ_DEMOD(state, DMDCFGMD);
        STV090x_SETFIELD_Px(reg, SCAN_ENABLE_FIELD, 0);
        STV090x_SETFIELD_Px(reg, CFR_AUTOSCAN_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                goto err;
        reg = STV090x_READ_DEMOD(state, DMDCFG2);
        STV090x_SETFIELD_Px(reg, S1S2_SEQUENTIAL_FIELD, 0x0);
        if (STV090x_WRITE_DEMOD(state, DMDCFG2, reg) < 0)
                goto err;

        if (STV090x_WRITE_DEMOD(state, RTC, 0x88) < 0)
                goto err;

        if (state->internal->dev_ver >= 0x20) {
                /*Frequency offset detector setting*/
                if (state->srate < 2000000) {
                        if (state->internal->dev_ver <= 0x20) {
                                /* Cut 2 */
                                if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x39) < 0)
                                        goto err;
                        } else {
                                /* Cut 3 */
                                if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x89) < 0)
                                        goto err;
                        }
                        if (STV090x_WRITE_DEMOD(state, CARHDR, 0x40) < 0)
                                goto err;
                } else if (state->srate < 10000000) {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x4c) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CARHDR, 0x20) < 0)
                                goto err;
                } else {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x4b) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CARHDR, 0x20) < 0)
                                goto err;
                }
        } else {
                if (state->srate < 10000000) {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0xef) < 0)
                                goto err;
                } else {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0xed) < 0)
                                goto err;
                }
        }

        switch (state->algo) {
        case STV090x_WARM_SEARCH:
                /* The symbol rate and the exact
                 * carrier Frequency are known
                 */
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1f) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x18) < 0)
                        goto err;
                break;

        case STV090x_COLD_SEARCH:
                /* The symbol rate is known */
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1f) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x15) < 0)
                        goto err;
                break;

        default:
                break;
        }
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_get_agc2_min_level(struct stv090x_state *state)
{
        u32 agc2_min = 0xffff, agc2 = 0, freq_init, freq_step, reg;
        s32 i, j, steps, dir;

        if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x38) < 0)
                goto err;
        reg = STV090x_READ_DEMOD(state, DMDCFGMD);
        STV090x_SETFIELD_Px(reg, SCAN_ENABLE_FIELD, 0);
        STV090x_SETFIELD_Px(reg, CFR_AUTOSCAN_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                goto err;

        if (STV090x_WRITE_DEMOD(state, SFRUP1, 0x83) < 0) /* SR = 65 Msps Max */
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRUP0, 0xc0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRLOW1, 0x82) < 0) /* SR= 400 ksps Min */
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRLOW0, 0xa0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, DMDTOM, 0x00) < 0) /* stop acq @ coarse carrier state */
                goto err;
        if (stv090x_set_srate(state, 1000000) < 0)
                goto err;

        steps  = state->search_range / 1000000;
        if (steps <= 0)
                steps = 1;

        dir = 1;
        freq_step = (1000000 * 256) / (state->internal->mclk / 256);
        freq_init = 0;

        for (i = 0; i < steps; i++) {
                if (dir > 0)
                        freq_init = freq_init + (freq_step * i);
                else
                        freq_init = freq_init - (freq_step * i);

                dir *= -1;

                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x5c) < 0) /* Demod RESET */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT1, (freq_init >> 8) & 0xff) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT0, freq_init & 0xff) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x58) < 0) /* Demod RESET */
                        goto err;
                msleep(10);

                agc2 = 0;
                for (j = 0; j < 10; j++) {
                        agc2 += (STV090x_READ_DEMOD(state, AGC2I1) << 8) |
                                STV090x_READ_DEMOD(state, AGC2I0);
                }
                agc2 /= 10;
                if (agc2 < agc2_min)
                        agc2_min = agc2;
        }

        return agc2_min;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static u32 stv090x_get_srate(struct stv090x_state *state, u32 clk)
{
        u8 r3, r2, r1, r0;
        s32 srate, int_1, int_2, tmp_1, tmp_2;

        r3 = STV090x_READ_DEMOD(state, SFR3);
        r2 = STV090x_READ_DEMOD(state, SFR2);
        r1 = STV090x_READ_DEMOD(state, SFR1);
        r0 = STV090x_READ_DEMOD(state, SFR0);

        srate = ((r3 << 24) | (r2 << 16) | (r1 <<  8) | r0);

        int_1 = clk >> 16;
        int_2 = srate >> 16;

        tmp_1 = clk % 0x10000;
        tmp_2 = srate % 0x10000;

        srate = (int_1 * int_2) +
                ((int_1 * tmp_2) >> 16) +
                ((int_2 * tmp_1) >> 16);

        return srate;
}

static u32 stv090x_srate_srch_coarse(struct stv090x_state *state)
{
        struct dvb_frontend *fe = &state->frontend;

        int tmg_lock = 0, i;
        s32 tmg_cpt = 0, dir = 1, steps, cur_step = 0, freq;
        u32 srate_coarse = 0, agc2 = 0, car_step = 1200, reg;
        u32 agc2th;

        if (state->internal->dev_ver >= 0x30)
                agc2th = 0x2e00;
        else
                agc2th = 0x1f00;

        reg = STV090x_READ_DEMOD(state, DMDISTATE);
        STV090x_SETFIELD_Px(reg, I2C_DEMOD_MODE_FIELD, 0x1f); /* Demod RESET */
        if (STV090x_WRITE_DEMOD(state, DMDISTATE, reg) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGCFG, 0x12) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGCFG2, 0xc0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGTHRISE, 0xf0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGTHFALL, 0xe0) < 0)
                goto err;
        reg = STV090x_READ_DEMOD(state, DMDCFGMD);
        STV090x_SETFIELD_Px(reg, SCAN_ENABLE_FIELD, 1);
        STV090x_SETFIELD_Px(reg, CFR_AUTOSCAN_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                goto err;

        if (STV090x_WRITE_DEMOD(state, SFRUP1, 0x83) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRUP0, 0xc0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRLOW1, 0x82) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, SFRLOW0, 0xa0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, DMDTOM, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x50) < 0)
                goto err;

        if (state->internal->dev_ver >= 0x30) {
                if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x99) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, SFRSTEP, 0x98) < 0)
                        goto err;

        } else if (state->internal->dev_ver >= 0x20) {
                if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x6a) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, SFRSTEP, 0x95) < 0)
                        goto err;
        }

        if (state->srate <= 2000000)
                car_step = 1000;
        else if (state->srate <= 5000000)
                car_step = 2000;
        else if (state->srate <= 12000000)
                car_step = 3000;
        else
                car_step = 5000;

        steps  = -1 + ((state->search_range / 1000) / car_step);
        steps /= 2;
        steps  = (2 * steps) + 1;
        if (steps < 0)
                steps = 1;
        else if (steps > 10) {
                steps = 11;
                car_step = (state->search_range / 1000) / 10;
        }
        cur_step = 0;
        dir = 1;
        freq = state->frequency;

        while ((!tmg_lock) && (cur_step < steps)) {
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x5f) < 0) /* Demod RESET */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT1, 0x00) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT0, 0x00) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, SFRINIT1, 0x00) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, SFRINIT0, 0x00) < 0)
                        goto err;
                /* trigger acquisition */
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x40) < 0)
                        goto err;
                msleep(50);
                for (i = 0; i < 10; i++) {
                        reg = STV090x_READ_DEMOD(state, DSTATUS);
                        if (STV090x_GETFIELD_Px(reg, TMGLOCK_QUALITY_FIELD) >= 2)
                                tmg_cpt++;
                        agc2 += (STV090x_READ_DEMOD(state, AGC2I1) << 8) |
                                STV090x_READ_DEMOD(state, AGC2I0);
                }
                agc2 /= 10;
                srate_coarse = stv090x_get_srate(state, state->internal->mclk);
                cur_step++;
                dir *= -1;
                if ((tmg_cpt >= 5) && (agc2 < agc2th) &&
                    (srate_coarse < 50000000) && (srate_coarse > 850000))
                        tmg_lock = 1;
                else if (cur_step < steps) {
                        if (dir > 0)
                                freq += cur_step * car_step;
                        else
                                freq -= cur_step * car_step;

                        /* Setup tuner */
                        if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                                goto err;

                        if (state->config->tuner_set_frequency) {
                                if (state->config->tuner_set_frequency(fe, freq) < 0)
                                        goto err_gateoff;
                        }

                        if (state->config->tuner_set_bandwidth) {
                                if (state->config->tuner_set_bandwidth(fe, state->tuner_bw) < 0)
                                        goto err_gateoff;
                        }

                        if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                                goto err;

                        msleep(50);

                        if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                                goto err;

                        if (state->config->tuner_get_status) {
                                if (state->config->tuner_get_status(fe, &reg) < 0)
                                        goto err_gateoff;
                        }

                        if (reg)
                                dprintk(FE_DEBUG, 1, "Tuner phase locked");
                        else
                                dprintk(FE_DEBUG, 1, "Tuner unlocked");

                        if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                                goto err;

                }
        }
        if (!tmg_lock)
                srate_coarse = 0;
        else
                srate_coarse = stv090x_get_srate(state, state->internal->mclk);

        return srate_coarse;

err_gateoff:
        stv090x_i2c_gate_ctrl(state, 0);
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static u32 stv090x_srate_srch_fine(struct stv090x_state *state)
{
        u32 srate_coarse, freq_coarse, sym, reg;

        srate_coarse = stv090x_get_srate(state, state->internal->mclk);
        freq_coarse  = STV090x_READ_DEMOD(state, CFR2) << 8;
        freq_coarse |= STV090x_READ_DEMOD(state, CFR1);
        sym = 13 * (srate_coarse / 10); /* SFRUP = SFR + 30% */

        if (sym < state->srate)
                srate_coarse = 0;
        else {
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1f) < 0) /* Demod RESET */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, TMGCFG2, 0xc1) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, TMGTHRISE, 0x20) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, TMGTHFALL, 0x00) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, TMGCFG, 0xd2) < 0)
                        goto err;
                reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                STV090x_SETFIELD_Px(reg, CFR_AUTOSCAN_FIELD, 0x00);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;

                if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x38) < 0)
                        goto err;

                if (state->internal->dev_ver >= 0x30) {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x79) < 0)
                                goto err;
                } else if (state->internal->dev_ver >= 0x20) {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x49) < 0)
                                goto err;
                }

                if (srate_coarse > 3000000) {
                        sym  = 13 * (srate_coarse / 10); /* SFRUP = SFR + 30% */
                        sym  = (sym / 1000) * 65536;
                        sym /= (state->internal->mclk / 1000);
                        if (STV090x_WRITE_DEMOD(state, SFRUP1, (sym >> 8) & 0x7f) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, SFRUP0, sym & 0xff) < 0)
                                goto err;
                        sym  = 10 * (srate_coarse / 13); /* SFRLOW = SFR - 30% */
                        sym  = (sym / 1000) * 65536;
                        sym /= (state->internal->mclk / 1000);
                        if (STV090x_WRITE_DEMOD(state, SFRLOW1, (sym >> 8) & 0x7f) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, SFRLOW0, sym & 0xff) < 0)
                                goto err;
                        sym  = (srate_coarse / 1000) * 65536;
                        sym /= (state->internal->mclk / 1000);
                        if (STV090x_WRITE_DEMOD(state, SFRINIT1, (sym >> 8) & 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, SFRINIT0, sym & 0xff) < 0)
                                goto err;
                } else {
                        sym  = 13 * (srate_coarse / 10); /* SFRUP = SFR + 30% */
                        sym  = (sym / 100) * 65536;
                        sym /= (state->internal->mclk / 100);
                        if (STV090x_WRITE_DEMOD(state, SFRUP1, (sym >> 8) & 0x7f) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, SFRUP0, sym & 0xff) < 0)
                                goto err;
                        sym  = 10 * (srate_coarse / 14); /* SFRLOW = SFR - 30% */
                        sym  = (sym / 100) * 65536;
                        sym /= (state->internal->mclk / 100);
                        if (STV090x_WRITE_DEMOD(state, SFRLOW1, (sym >> 8) & 0x7f) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, SFRLOW0, sym & 0xff) < 0)
                                goto err;
                        sym  = (srate_coarse / 100) * 65536;
                        sym /= (state->internal->mclk / 100);
                        if (STV090x_WRITE_DEMOD(state, SFRINIT1, (sym >> 8) & 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, SFRINIT0, sym & 0xff) < 0)
                                goto err;
                }
                if (STV090x_WRITE_DEMOD(state, DMDTOM, 0x20) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT1, (freq_coarse >> 8) & 0xff) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT0, freq_coarse & 0xff) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x15) < 0) /* trigger acquisition */
                        goto err;
        }

        return srate_coarse;

err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_get_dmdlock(struct stv090x_state *state, s32 timeout)
{
        s32 timer = 0, lock = 0;
        u32 reg;
        u8 stat;

        while ((timer < timeout) && (!lock)) {
                reg = STV090x_READ_DEMOD(state, DMDSTATE);
                stat = STV090x_GETFIELD_Px(reg, HEADER_MODE_FIELD);

                switch (stat) {
                case 0: /* searching */
                case 1: /* first PLH detected */
                default:
                        dprintk(FE_DEBUG, 1, "Demodulator searching ..");
                        lock = 0;
                        break;
                case 2: /* DVB-S2 mode */
                case 3: /* DVB-S1/legacy mode */
                        reg = STV090x_READ_DEMOD(state, DSTATUS);
                        lock = STV090x_GETFIELD_Px(reg, LOCK_DEFINITIF_FIELD);
                        break;
                }

                if (!lock)
                        msleep(10);
                else
                        dprintk(FE_DEBUG, 1, "Demodulator acquired LOCK");

                timer += 10;
        }
        return lock;
}

static int stv090x_blind_search(struct stv090x_state *state)
{
        u32 agc2, reg, srate_coarse;
        s32 cpt_fail, agc2_ovflw, i;
        u8 k_ref, k_max, k_min;
        int coarse_fail = 0;
        int lock;

        k_max = 110;
        k_min = 10;

        agc2 = stv090x_get_agc2_min_level(state);

        if (agc2 > STV090x_SEARCH_AGC2_TH(state->internal->dev_ver)) {
                lock = 0;
        } else {

                if (state->internal->dev_ver <= 0x20) {
                        if (STV090x_WRITE_DEMOD(state, CARCFG, 0xc4) < 0)
                                goto err;
                } else {
                        /* > Cut 3 */
                        if (STV090x_WRITE_DEMOD(state, CARCFG, 0x06) < 0)
                                goto err;
                }

                if (STV090x_WRITE_DEMOD(state, RTCS2, 0x44) < 0)
                        goto err;

                if (state->internal->dev_ver >= 0x20) {
                        if (STV090x_WRITE_DEMOD(state, EQUALCFG, 0x41) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, FFECFG, 0x41) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, VITSCALE, 0x82) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, VAVSRVIT, 0x00) < 0) /* set viterbi hysteresis */
                                goto err;
                }

                k_ref = k_max;
                do {
                        if (STV090x_WRITE_DEMOD(state, KREFTMG, k_ref) < 0)
                                goto err;
                        if (stv090x_srate_srch_coarse(state) != 0) {
                                srate_coarse = stv090x_srate_srch_fine(state);
                                if (srate_coarse != 0) {
                                        stv090x_get_lock_tmg(state);
                                        lock = stv090x_get_dmdlock(state,
                                                        state->DemodTimeout);
                                } else {
                                        lock = 0;
                                }
                        } else {
                                cpt_fail = 0;
                                agc2_ovflw = 0;
                                for (i = 0; i < 10; i++) {
                                        agc2 += (STV090x_READ_DEMOD(state, AGC2I1) << 8) |
                                                STV090x_READ_DEMOD(state, AGC2I0);
                                        if (agc2 >= 0xff00)
                                                agc2_ovflw++;
                                        reg = STV090x_READ_DEMOD(state, DSTATUS2);
                                        if ((STV090x_GETFIELD_Px(reg, CFR_OVERFLOW_FIELD) == 0x01) &&
                                            (STV090x_GETFIELD_Px(reg, DEMOD_DELOCK_FIELD) == 0x01))

                                                cpt_fail++;
                                }
                                if ((cpt_fail > 7) || (agc2_ovflw > 7))
                                        coarse_fail = 1;

                                lock = 0;
                        }
                        k_ref -= 20;
                } while ((k_ref >= k_min) && (!lock) && (!coarse_fail));
        }

        return lock;

err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_chk_tmg(struct stv090x_state *state)
{
        u32 reg;
        s32 tmg_cpt = 0, i;
        u8 freq, tmg_thh, tmg_thl;
        int tmg_lock = 0;

        freq = STV090x_READ_DEMOD(state, CARFREQ);
        tmg_thh = STV090x_READ_DEMOD(state, TMGTHRISE);
        tmg_thl = STV090x_READ_DEMOD(state, TMGTHFALL);
        if (STV090x_WRITE_DEMOD(state, TMGTHRISE, 0x20) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGTHFALL, 0x00) < 0)
                goto err;

        reg = STV090x_READ_DEMOD(state, DMDCFGMD);
        STV090x_SETFIELD_Px(reg, CFR_AUTOSCAN_FIELD, 0x00); /* stop carrier offset search */
        if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, RTC, 0x80) < 0)
                goto err;

        if (STV090x_WRITE_DEMOD(state, RTCS2, 0x40) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x00) < 0)
                goto err;

        if (STV090x_WRITE_DEMOD(state, CFRINIT1, 0x00) < 0) /* set car ofset to 0 */
                goto err;
        if (STV090x_WRITE_DEMOD(state, CFRINIT0, 0x00) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x65) < 0)
                goto err;

        if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x18) < 0) /* trigger acquisition */
                goto err;
        msleep(10);

        for (i = 0; i < 10; i++) {
                reg = STV090x_READ_DEMOD(state, DSTATUS);
                if (STV090x_GETFIELD_Px(reg, TMGLOCK_QUALITY_FIELD) >= 2)
                        tmg_cpt++;
                msleep(1);
        }
        if (tmg_cpt >= 3)
                tmg_lock = 1;

        if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x38) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, RTC, 0x88) < 0) /* DVB-S1 timing */
                goto err;
        if (STV090x_WRITE_DEMOD(state, RTCS2, 0x68) < 0) /* DVB-S2 timing */
                goto err;

        if (STV090x_WRITE_DEMOD(state, CARFREQ, freq) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGTHRISE, tmg_thh) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, TMGTHFALL, tmg_thl) < 0)
                goto err;

        return  tmg_lock;

err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_get_coldlock(struct stv090x_state *state, s32 timeout_dmd)
{
        struct dvb_frontend *fe = &state->frontend;

        u32 reg;
        s32 car_step, steps, cur_step, dir, freq, timeout_lock;
        int lock;

        if (state->srate >= 10000000)
                timeout_lock = timeout_dmd / 3;
        else
                timeout_lock = timeout_dmd / 2;

        lock = stv090x_get_dmdlock(state, timeout_lock); /* cold start wait */
        if (lock)
                return lock;

        if (state->srate >= 10000000) {
                if (stv090x_chk_tmg(state)) {
                        if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1f) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x15) < 0)
                                goto err;
                        return stv090x_get_dmdlock(state, timeout_dmd);
                }
                return 0;
        }

        if (state->srate <= 4000000)
                car_step = 1000;
        else if (state->srate <= 7000000)
                car_step = 2000;
        else if (state->srate <= 10000000)
                car_step = 3000;
        else
                car_step = 5000;

        steps  = (state->search_range / 1000) / car_step;
        steps /= 2;
        steps  = 2 * (steps + 1);
        if (steps < 0)
                steps = 2;
        else if (steps > 12)
                steps = 12;

        cur_step = 1;
        dir = 1;

        freq = state->frequency;
        state->tuner_bw = stv090x_car_width(state->srate, state->rolloff) + state->srate;
        while ((cur_step <= steps) && (!lock)) {
                if (dir > 0)
                        freq += cur_step * car_step;
                else
                        freq -= cur_step * car_step;

                /* Setup tuner */
                if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                        goto err;

                if (state->config->tuner_set_frequency) {
                        if (state->config->tuner_set_frequency(fe, freq) < 0)
                                goto err_gateoff;
                }

                if (state->config->tuner_set_bandwidth) {
                        if (state->config->tuner_set_bandwidth(fe, state->tuner_bw) < 0)
                                goto err_gateoff;
                }

                if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                        goto err;

                msleep(50);

                if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                        goto err;

                if (state->config->tuner_get_status) {
                        if (state->config->tuner_get_status(fe, &reg) < 0)
                                goto err_gateoff;
                        if (reg)
                                dprintk(FE_DEBUG, 1, "Tuner phase locked");
                        else
                                dprintk(FE_DEBUG, 1, "Tuner unlocked");
                }

                if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                        goto err;

                STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1c);
                if (STV090x_WRITE_DEMOD(state, CFRINIT1, 0x00) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT0, 0x00) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1f) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x15) < 0)
                        goto err;
                lock = stv090x_get_dmdlock(state, (timeout_dmd / 3));

                dir *= -1;
                cur_step++;
        }

        return lock;

err_gateoff:
        stv090x_i2c_gate_ctrl(state, 0);
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_get_loop_params(struct stv090x_state *state, s32 *freq_inc, s32 *timeout_sw, s32 *steps)
{
        s32 timeout, inc, steps_max, srate, car_max;

        srate = state->srate;
        car_max = state->search_range / 1000;
        car_max += car_max / 10;
        car_max  = 65536 * (car_max / 2);
        car_max /= (state->internal->mclk / 1000);

        if (car_max > 0x4000)
                car_max = 0x4000 ; /* maxcarrier should be<= +-1/4 Mclk */

        inc  = srate;
        inc /= state->internal->mclk / 1000;
        inc *= 256;
        inc *= 256;
        inc /= 1000;

        switch (state->search_mode) {
        case STV090x_SEARCH_DVBS1:
        case STV090x_SEARCH_DSS:
                inc *= 3; /* freq step = 3% of srate */
                timeout = 20;
                break;

        case STV090x_SEARCH_DVBS2:
                inc *= 4;
                timeout = 25;
                break;

        case STV090x_SEARCH_AUTO:
        default:
                inc *= 3;
                timeout = 25;
                break;
        }
        inc /= 100;
        if ((inc > car_max) || (inc < 0))
                inc = car_max / 2; /* increment <= 1/8 Mclk */

        timeout *= 27500; /* 27.5 Msps reference */
        if (srate > 0)
                timeout /= (srate / 1000);

        if ((timeout > 100) || (timeout < 0))
                timeout = 100;

        steps_max = (car_max / inc) + 1; /* min steps = 3 */
        if ((steps_max > 100) || (steps_max < 0)) {
                steps_max = 100; /* max steps <= 100 */
                inc = car_max / steps_max;
        }
        *freq_inc = inc;
        *timeout_sw = timeout;
        *steps = steps_max;

        return 0;
}

static int stv090x_chk_signal(struct stv090x_state *state)
{
        s32 offst_car, agc2, car_max;
        int no_signal;

        offst_car  = STV090x_READ_DEMOD(state, CFR2) << 8;
        offst_car |= STV090x_READ_DEMOD(state, CFR1);
        offst_car = comp2(offst_car, 16);

        agc2  = STV090x_READ_DEMOD(state, AGC2I1) << 8;
        agc2 |= STV090x_READ_DEMOD(state, AGC2I0);
        car_max = state->search_range / 1000;

        car_max += (car_max / 10); /* 10% margin */
        car_max  = (65536 * car_max / 2);
        car_max /= state->internal->mclk / 1000;

        if (car_max > 0x4000)
                car_max = 0x4000;

        if ((agc2 > 0x2000) || (offst_car > 2 * car_max) || (offst_car < -2 * car_max)) {
                no_signal = 1;
                dprintk(FE_DEBUG, 1, "No Signal");
        } else {
                no_signal = 0;
                dprintk(FE_DEBUG, 1, "Found Signal");
        }

        return no_signal;
}

static int stv090x_search_car_loop(struct stv090x_state *state, s32 inc, s32 timeout, int zigzag, s32 steps_max)
{
        int no_signal, lock = 0;
        s32 cpt_step = 0, offst_freq, car_max;
        u32 reg;

        car_max  = state->search_range / 1000;
        car_max += (car_max / 10);
        car_max  = (65536 * car_max / 2);
        car_max /= (state->internal->mclk / 1000);
        if (car_max > 0x4000)
                car_max = 0x4000;

        if (zigzag)
                offst_freq = 0;
        else
                offst_freq = -car_max + inc;

        do {
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1c) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT1, ((offst_freq / 256) & 0xff)) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT0, offst_freq & 0xff) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x18) < 0)
                        goto err;

                reg = STV090x_READ_DEMOD(state, PDELCTRL1);
                STV090x_SETFIELD_Px(reg, ALGOSWRST_FIELD, 0x1); /* stop DVB-S2 packet delin */
                if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
                        goto err;

                if (zigzag) {
                        if (offst_freq >= 0)
                                offst_freq = -offst_freq - 2 * inc;
                        else
                                offst_freq = -offst_freq;
                } else {
                        offst_freq += 2 * inc;
                }

                cpt_step++;

                lock = stv090x_get_dmdlock(state, timeout);
                no_signal = stv090x_chk_signal(state);

        } while ((!lock) &&
                 (!no_signal) &&
                  ((offst_freq - inc) < car_max) &&
                  ((offst_freq + inc) > -car_max) &&
                  (cpt_step < steps_max));

        reg = STV090x_READ_DEMOD(state, PDELCTRL1);
        STV090x_SETFIELD_Px(reg, ALGOSWRST_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
                        goto err;

        return lock;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_sw_algo(struct stv090x_state *state)
{
        int no_signal, zigzag, lock = 0;
        u32 reg;

        s32 dvbs2_fly_wheel;
        s32 inc, timeout_step, trials, steps_max;

        /* get params */
        stv090x_get_loop_params(state, &inc, &timeout_step, &steps_max);

        switch (state->search_mode) {
        case STV090x_SEARCH_DVBS1:
        case STV090x_SEARCH_DSS:
                /* accelerate the frequency detector */
                if (state->internal->dev_ver >= 0x20) {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x3B) < 0)
                                goto err;
                }

                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, 0x49) < 0)
                        goto err;
                zigzag = 0;
                break;

        case STV090x_SEARCH_DVBS2:
                if (state->internal->dev_ver >= 0x20) {
                        if (STV090x_WRITE_DEMOD(state, CORRELABS, 0x79) < 0)
                                goto err;
                }

                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, 0x89) < 0)
                        goto err;
                zigzag = 1;
                break;

        case STV090x_SEARCH_AUTO:
        default:
                /* accelerate the frequency detector */
                if (state->internal->dev_ver >= 0x20) {
                        if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x3b) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CORRELABS, 0x79) < 0)
                                goto err;
                }

                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, 0xc9) < 0)
                        goto err;
                zigzag = 0;
                break;
        }

        trials = 0;
        do {
                lock = stv090x_search_car_loop(state, inc, timeout_step, zigzag, steps_max);
                no_signal = stv090x_chk_signal(state);
                trials++;

                /*run the SW search 2 times maximum*/
                if (lock || no_signal || (trials == 2)) {
                        /*Check if the demod is not losing lock in DVBS2*/
                        if (state->internal->dev_ver >= 0x20) {
                                if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x49) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, CORRELABS, 0x9e) < 0)
                                        goto err;
                        }

                        reg = STV090x_READ_DEMOD(state, DMDSTATE);
                        if ((lock) && (STV090x_GETFIELD_Px(reg, HEADER_MODE_FIELD) == STV090x_DVBS2)) {
                                /*Check if the demod is not losing lock in DVBS2*/
                                msleep(timeout_step);
                                reg = STV090x_READ_DEMOD(state, DMDFLYW);
                                dvbs2_fly_wheel = STV090x_GETFIELD_Px(reg, FLYWHEEL_CPT_FIELD);
                                if (dvbs2_fly_wheel < 0xd) {     /*if correct frames is decrementing */
                                        msleep(timeout_step);
                                        reg = STV090x_READ_DEMOD(state, DMDFLYW);
                                        dvbs2_fly_wheel = STV090x_GETFIELD_Px(reg, FLYWHEEL_CPT_FIELD);
                                }
                                if (dvbs2_fly_wheel < 0xd) {
                                        /*FALSE lock, The demod is losing lock */
                                        lock = 0;
                                        if (trials < 2) {
                                                if (state->internal->dev_ver >= 0x20) {
                                                        if (STV090x_WRITE_DEMOD(state, CORRELABS, 0x79) < 0)
                                                                goto err;
                                                }

                                                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, 0x89) < 0)
                                                        goto err;
                                        }
                                }
                        }
                }
        } while ((!lock) && (trials < 2) && (!no_signal));

        return lock;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static enum stv090x_delsys stv090x_get_std(struct stv090x_state *state)
{
        u32 reg;
        enum stv090x_delsys delsys;

        reg = STV090x_READ_DEMOD(state, DMDSTATE);
        if (STV090x_GETFIELD_Px(reg, HEADER_MODE_FIELD) == 2)
                delsys = STV090x_DVBS2;
        else if (STV090x_GETFIELD_Px(reg, HEADER_MODE_FIELD) == 3) {
                reg = STV090x_READ_DEMOD(state, FECM);
                if (STV090x_GETFIELD_Px(reg, DSS_DVB_FIELD) == 1)
                        delsys = STV090x_DSS;
                else
                        delsys = STV090x_DVBS1;
        } else {
                delsys = STV090x_ERROR;
        }

        return delsys;
}

/* in Hz */
static s32 stv090x_get_car_freq(struct stv090x_state *state, u32 mclk)
{
        s32 derot, int_1, int_2, tmp_1, tmp_2;

        derot  = STV090x_READ_DEMOD(state, CFR2) << 16;
        derot |= STV090x_READ_DEMOD(state, CFR1) <<  8;
        derot |= STV090x_READ_DEMOD(state, CFR0);

        derot = comp2(derot, 24);
        int_1 = mclk >> 12;
        int_2 = derot >> 12;

        /* carrier_frequency = MasterClock * Reg / 2^24 */
        tmp_1 = mclk % 0x1000;
        tmp_2 = derot % 0x1000;

        derot = (int_1 * int_2) +
                ((int_1 * tmp_2) >> 12) +
                ((int_2 * tmp_1) >> 12);

        return derot;
}

static int stv090x_get_viterbi(struct stv090x_state *state)
{
        u32 reg, rate;

        reg = STV090x_READ_DEMOD(state, VITCURPUN);
        rate = STV090x_GETFIELD_Px(reg, VIT_CURPUN_FIELD);

        switch (rate) {
        case 13:
                state->fec = STV090x_PR12;
                break;

        case 18:
                state->fec = STV090x_PR23;
                break;

        case 21:
                state->fec = STV090x_PR34;
                break;

        case 24:
                state->fec = STV090x_PR56;
                break;

        case 25:
                state->fec = STV090x_PR67;
                break;

        case 26:
                state->fec = STV090x_PR78;
                break;

        default:
                state->fec = STV090x_PRERR;
                break;
        }

        return 0;
}

static enum stv090x_signal_state stv090x_get_sig_params(struct stv090x_state *state)
{
        struct dvb_frontend *fe = &state->frontend;

        u8 tmg;
        u32 reg;
        s32 i = 0, offst_freq;

        msleep(5);

        if (state->algo == STV090x_BLIND_SEARCH) {
                tmg = STV090x_READ_DEMOD(state, TMGREG2);
                STV090x_WRITE_DEMOD(state, SFRSTEP, 0x5c);
                while ((i <= 50) && (tmg != 0) && (tmg != 0xff)) {
                        tmg = STV090x_READ_DEMOD(state, TMGREG2);
                        msleep(5);
                        i += 5;
                }
        }
        state->delsys = stv090x_get_std(state);

        if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                goto err;

        if (state->config->tuner_get_frequency) {
                if (state->config->tuner_get_frequency(fe, &state->frequency) < 0)
                        goto err_gateoff;
        }

        if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                goto err;

        offst_freq = stv090x_get_car_freq(state, state->internal->mclk) / 1000;
        state->frequency += offst_freq;

        if (stv090x_get_viterbi(state) < 0)
                goto err;

        reg = STV090x_READ_DEMOD(state, DMDMODCOD);
        state->modcod = STV090x_GETFIELD_Px(reg, DEMOD_MODCOD_FIELD);
        state->pilots = STV090x_GETFIELD_Px(reg, DEMOD_TYPE_FIELD) & 0x01;
        state->frame_len = STV090x_GETFIELD_Px(reg, DEMOD_TYPE_FIELD) >> 1;
        reg = STV090x_READ_DEMOD(state, TMGOBS);
        state->rolloff = STV090x_GETFIELD_Px(reg, ROLLOFF_STATUS_FIELD);
        reg = STV090x_READ_DEMOD(state, FECM);
        state->inversion = STV090x_GETFIELD_Px(reg, IQINV_FIELD);

        if ((state->algo == STV090x_BLIND_SEARCH) || (state->srate < 10000000)) {

                if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                        goto err;

                if (state->config->tuner_get_frequency) {
                        if (state->config->tuner_get_frequency(fe, &state->frequency) < 0)
                                goto err_gateoff;
                }

                if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                        goto err;

                if (abs(offst_freq) <= ((state->search_range / 2000) + 500))
                        return STV090x_RANGEOK;
                else if (abs(offst_freq) <= (stv090x_car_width(state->srate, state->rolloff) / 2000))
                        return STV090x_RANGEOK;
        } else {
                if (abs(offst_freq) <= ((state->search_range / 2000) + 500))
                        return STV090x_RANGEOK;
        }

        return STV090x_OUTOFRANGE;

err_gateoff:
        stv090x_i2c_gate_ctrl(state, 0);
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static u32 stv090x_get_tmgoffst(struct stv090x_state *state, u32 srate)
{
        s32 offst_tmg;

        offst_tmg  = STV090x_READ_DEMOD(state, TMGREG2) << 16;
        offst_tmg |= STV090x_READ_DEMOD(state, TMGREG1) <<  8;
        offst_tmg |= STV090x_READ_DEMOD(state, TMGREG0);

        offst_tmg = comp2(offst_tmg, 24); /* 2's complement */
        if (!offst_tmg)
                offst_tmg = 1;

        offst_tmg  = ((s32) srate * 10) / ((s32) 0x1000000 / offst_tmg);
        offst_tmg /= 320;

        return offst_tmg;
}

static u8 stv090x_optimize_carloop(struct stv090x_state *state, enum stv090x_modcod modcod, s32 pilots)
{
        u8 aclc = 0x29;
        s32 i;
        struct stv090x_long_frame_crloop *car_loop, *car_loop_qpsk_low, *car_loop_apsk_low;

        if (state->internal->dev_ver == 0x20) {
                car_loop                = stv090x_s2_crl_cut20;
                car_loop_qpsk_low       = stv090x_s2_lowqpsk_crl_cut20;
                car_loop_apsk_low       = stv090x_s2_apsk_crl_cut20;
        } else {
                /* >= Cut 3 */
                car_loop                = stv090x_s2_crl_cut30;
                car_loop_qpsk_low       = stv090x_s2_lowqpsk_crl_cut30;
                car_loop_apsk_low       = stv090x_s2_apsk_crl_cut30;
        }

        if (modcod < STV090x_QPSK_12) {
                i = 0;
                while ((i < 3) && (modcod != car_loop_qpsk_low[i].modcod))
                        i++;

                if (i >= 3)
                        i = 2;

        } else {
                i = 0;
                while ((i < 14) && (modcod != car_loop[i].modcod))
                        i++;

                if (i >= 14) {
                        i = 0;
                        while ((i < 11) && (modcod != car_loop_apsk_low[i].modcod))
                                i++;

                        if (i >= 11)
                                i = 10;
                }
        }

        if (modcod <= STV090x_QPSK_25) {
                if (pilots) {
                        if (state->srate <= 3000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_on_2;
                        else if (state->srate <= 7000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_on_5;
                        else if (state->srate <= 15000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_on_10;
                        else if (state->srate <= 25000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_on_20;
                        else
                                aclc = car_loop_qpsk_low[i].crl_pilots_on_30;
                } else {
                        if (state->srate <= 3000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_off_2;
                        else if (state->srate <= 7000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_off_5;
                        else if (state->srate <= 15000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_off_10;
                        else if (state->srate <= 25000000)
                                aclc = car_loop_qpsk_low[i].crl_pilots_off_20;
                        else
                                aclc = car_loop_qpsk_low[i].crl_pilots_off_30;
                }

        } else if (modcod <= STV090x_8PSK_910) {
                if (pilots) {
                        if (state->srate <= 3000000)
                                aclc = car_loop[i].crl_pilots_on_2;
                        else if (state->srate <= 7000000)
                                aclc = car_loop[i].crl_pilots_on_5;
                        else if (state->srate <= 15000000)
                                aclc = car_loop[i].crl_pilots_on_10;
                        else if (state->srate <= 25000000)
                                aclc = car_loop[i].crl_pilots_on_20;
                        else
                                aclc = car_loop[i].crl_pilots_on_30;
                } else {
                        if (state->srate <= 3000000)
                                aclc = car_loop[i].crl_pilots_off_2;
                        else if (state->srate <= 7000000)
                                aclc = car_loop[i].crl_pilots_off_5;
                        else if (state->srate <= 15000000)
                                aclc = car_loop[i].crl_pilots_off_10;
                        else if (state->srate <= 25000000)
                                aclc = car_loop[i].crl_pilots_off_20;
                        else
                                aclc = car_loop[i].crl_pilots_off_30;
                }
        } else { /* 16APSK and 32APSK */
                /*
                 * This should never happen in practice, except if
                 * something is really wrong at the car_loop table.
                 */
                if (i >= 11)
                        i = 10;
                if (state->srate <= 3000000)
                        aclc = car_loop_apsk_low[i].crl_pilots_on_2;
                else if (state->srate <= 7000000)
                        aclc = car_loop_apsk_low[i].crl_pilots_on_5;
                else if (state->srate <= 15000000)
                        aclc = car_loop_apsk_low[i].crl_pilots_on_10;
                else if (state->srate <= 25000000)
                        aclc = car_loop_apsk_low[i].crl_pilots_on_20;
                else
                        aclc = car_loop_apsk_low[i].crl_pilots_on_30;
        }

        return aclc;
}

static u8 stv090x_optimize_carloop_short(struct stv090x_state *state)
{
        struct stv090x_short_frame_crloop *short_crl = NULL;
        s32 index = 0;
        u8 aclc = 0x0b;

        switch (state->modulation) {
        case STV090x_QPSK:
        default:
                index = 0;
                break;
        case STV090x_8PSK:
                index = 1;
                break;
        case STV090x_16APSK:
                index = 2;
                break;
        case STV090x_32APSK:
                index = 3;
                break;
        }

        if (state->internal->dev_ver >= 0x30) {
                /* Cut 3.0 and up */
                short_crl = stv090x_s2_short_crl_cut30;
        } else {
                /* Cut 2.0 and up: we don't support cuts older than 2.0 */
                short_crl = stv090x_s2_short_crl_cut20;
        }

        if (state->srate <= 3000000)
                aclc = short_crl[index].crl_2;
        else if (state->srate <= 7000000)
                aclc = short_crl[index].crl_5;
        else if (state->srate <= 15000000)
                aclc = short_crl[index].crl_10;
        else if (state->srate <= 25000000)
                aclc = short_crl[index].crl_20;
        else
                aclc = short_crl[index].crl_30;

        return aclc;
}

static int stv090x_optimize_track(struct stv090x_state *state)
{
        struct dvb_frontend *fe = &state->frontend;

        enum stv090x_modcod modcod;

        s32 srate, pilots, aclc, f_1, f_0, i = 0, blind_tune = 0;
        u32 reg;

        srate  = stv090x_get_srate(state, state->internal->mclk);
        srate += stv090x_get_tmgoffst(state, srate);

        switch (state->delsys) {
        case STV090x_DVBS1:
        case STV090x_DSS:
                if (state->search_mode == STV090x_SEARCH_AUTO) {
                        reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                        STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 1);
                        STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 0);
                        if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                                goto err;
                }
                reg = STV090x_READ_DEMOD(state, DEMOD);
                STV090x_SETFIELD_Px(reg, ROLLOFF_CONTROL_FIELD, state->rolloff);
                STV090x_SETFIELD_Px(reg, MANUAL_SXROLLOFF_FIELD, 0x01);
                if (STV090x_WRITE_DEMOD(state, DEMOD, reg) < 0)
                        goto err;

                if (state->internal->dev_ver >= 0x30) {
                        if (stv090x_get_viterbi(state) < 0)
                                goto err;

                        if (state->fec == STV090x_PR12) {
                                if (STV090x_WRITE_DEMOD(state, GAUSSR0, 0x98) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, CCIR0, 0x18) < 0)
                                        goto err;
                        } else {
                                if (STV090x_WRITE_DEMOD(state, GAUSSR0, 0x18) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, CCIR0, 0x18) < 0)
                                        goto err;
                        }
                }

                if (STV090x_WRITE_DEMOD(state, ERRCTRL1, 0x75) < 0)
                        goto err;
                break;

        case STV090x_DVBS2:
                reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 0);
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;
                if (state->internal->dev_ver >= 0x30) {
                        if (STV090x_WRITE_DEMOD(state, ACLC, 0) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, BCLC, 0) < 0)
                                goto err;
                }
                if (state->frame_len == STV090x_LONG_FRAME) {
                        reg = STV090x_READ_DEMOD(state, DMDMODCOD);
                        modcod = STV090x_GETFIELD_Px(reg, DEMOD_MODCOD_FIELD);
                        pilots = STV090x_GETFIELD_Px(reg, DEMOD_TYPE_FIELD) & 0x01;
                        aclc = stv090x_optimize_carloop(state, modcod, pilots);
                        if (modcod <= STV090x_QPSK_910) {
                                STV090x_WRITE_DEMOD(state, ACLC2S2Q, aclc);
                        } else if (modcod <= STV090x_8PSK_910) {
                                if (STV090x_WRITE_DEMOD(state, ACLC2S2Q, 0x2a) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, ACLC2S28, aclc) < 0)
                                        goto err;
                        }
                        if ((state->demod_mode == STV090x_SINGLE) && (modcod > STV090x_8PSK_910)) {
                                if (modcod <= STV090x_16APSK_910) {
                                        if (STV090x_WRITE_DEMOD(state, ACLC2S2Q, 0x2a) < 0)
                                                goto err;
                                        if (STV090x_WRITE_DEMOD(state, ACLC2S216A, aclc) < 0)
                                                goto err;
                                } else {
                                        if (STV090x_WRITE_DEMOD(state, ACLC2S2Q, 0x2a) < 0)
                                                goto err;
                                        if (STV090x_WRITE_DEMOD(state, ACLC2S232A, aclc) < 0)
                                                goto err;
                                }
                        }
                } else {
                        /*Carrier loop setting for short frame*/
                        aclc = stv090x_optimize_carloop_short(state);
                        if (state->modulation == STV090x_QPSK) {
                                if (STV090x_WRITE_DEMOD(state, ACLC2S2Q, aclc) < 0)
                                        goto err;
                        } else if (state->modulation == STV090x_8PSK) {
                                if (STV090x_WRITE_DEMOD(state, ACLC2S2Q, 0x2a) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, ACLC2S28, aclc) < 0)
                                        goto err;
                        } else if (state->modulation == STV090x_16APSK) {
                                if (STV090x_WRITE_DEMOD(state, ACLC2S2Q, 0x2a) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, ACLC2S216A, aclc) < 0)
                                        goto err;
                        } else if (state->modulation == STV090x_32APSK)  {
                                if (STV090x_WRITE_DEMOD(state, ACLC2S2Q, 0x2a) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, ACLC2S232A, aclc) < 0)
                                        goto err;
                        }
                }

                STV090x_WRITE_DEMOD(state, ERRCTRL1, 0x67); /* PER */
                break;

        case STV090x_ERROR:
        default:
                reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                STV090x_SETFIELD_Px(reg, DVBS1_ENABLE_FIELD, 1);
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;
                break;
        }

        f_1 = STV090x_READ_DEMOD(state, CFR2);
        f_0 = STV090x_READ_DEMOD(state, CFR1);
        reg = STV090x_READ_DEMOD(state, TMGOBS);

        if (state->algo == STV090x_BLIND_SEARCH) {
                STV090x_WRITE_DEMOD(state, SFRSTEP, 0x00);
                reg = STV090x_READ_DEMOD(state, DMDCFGMD);
                STV090x_SETFIELD_Px(reg, SCAN_ENABLE_FIELD, 0x00);
                STV090x_SETFIELD_Px(reg, CFR_AUTOSCAN_FIELD, 0x00);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, TMGCFG2, 0xc1) < 0)
                        goto err;

                if (stv090x_set_srate(state, srate) < 0)
                        goto err;
                blind_tune = 1;

                if (stv090x_dvbs_track_crl(state) < 0)
                        goto err;
        }

        if (state->internal->dev_ver >= 0x20) {
                if ((state->search_mode == STV090x_SEARCH_DVBS1)        ||
                    (state->search_mode == STV090x_SEARCH_DSS)          ||
                    (state->search_mode == STV090x_SEARCH_AUTO)) {

                        if (STV090x_WRITE_DEMOD(state, VAVSRVIT, 0x0a) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, VITSCALE, 0x00) < 0)
                                goto err;
                }
        }

        if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x38) < 0)
                goto err;

        /* AUTO tracking MODE */
        if (STV090x_WRITE_DEMOD(state, SFRUP1, 0x80) < 0)
                goto err;
        /* AUTO tracking MODE */
        if (STV090x_WRITE_DEMOD(state, SFRLOW1, 0x80) < 0)
                goto err;

        if ((state->internal->dev_ver >= 0x20) || (blind_tune == 1) ||
            (state->srate < 10000000)) {
                /* update initial carrier freq with the found freq offset */
                if (STV090x_WRITE_DEMOD(state, CFRINIT1, f_1) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CFRINIT0, f_0) < 0)
                        goto err;
                state->tuner_bw = stv090x_car_width(srate, state->rolloff) + 10000000;

                if ((state->internal->dev_ver >= 0x20) || (blind_tune == 1)) {

                        if (state->algo != STV090x_WARM_SEARCH) {

                                if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                                        goto err;

                                if (state->config->tuner_set_bandwidth) {
                                        if (state->config->tuner_set_bandwidth(fe, state->tuner_bw) < 0)
                                                goto err_gateoff;
                                }

                                if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                                        goto err;

                        }
                }
                if ((state->algo == STV090x_BLIND_SEARCH) || (state->srate < 10000000))
                        msleep(50); /* blind search: wait 50ms for SR stabilization */
                else
                        msleep(5);

                stv090x_get_lock_tmg(state);

                if (!(stv090x_get_dmdlock(state, (state->DemodTimeout / 2)))) {
                        if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1f) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CFRINIT1, f_1) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, CFRINIT0, f_0) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x18) < 0)
                                goto err;

                        i = 0;

                        while ((!(stv090x_get_dmdlock(state, (state->DemodTimeout / 2)))) && (i <= 2)) {

                                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x1f) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, CFRINIT1, f_1) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, CFRINIT0, f_0) < 0)
                                        goto err;
                                if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x18) < 0)
                                        goto err;
                                i++;
                        }
                }

        }

        if (state->internal->dev_ver >= 0x20) {
                if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x49) < 0)
                        goto err;
        }

        if ((state->delsys == STV090x_DVBS1) || (state->delsys == STV090x_DSS))
                stv090x_set_vit_thtracq(state);

        return 0;

err_gateoff:
        stv090x_i2c_gate_ctrl(state, 0);
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_get_feclock(struct stv090x_state *state, s32 timeout)
{
        s32 timer = 0, lock = 0, stat;
        u32 reg;

        while ((timer < timeout) && (!lock)) {
                reg = STV090x_READ_DEMOD(state, DMDSTATE);
                stat = STV090x_GETFIELD_Px(reg, HEADER_MODE_FIELD);

                switch (stat) {
                case 0: /* searching */
                case 1: /* first PLH detected */
                default:
                        lock = 0;
                        break;

                case 2: /* DVB-S2 mode */
                        reg = STV090x_READ_DEMOD(state, PDELSTATUS1);
                        lock = STV090x_GETFIELD_Px(reg, PKTDELIN_LOCK_FIELD);
                        break;

                case 3: /* DVB-S1/legacy mode */
                        reg = STV090x_READ_DEMOD(state, VSTATUSVIT);
                        lock = STV090x_GETFIELD_Px(reg, LOCKEDVIT_FIELD);
                        break;
                }
                if (!lock) {
                        msleep(10);
                        timer += 10;
                }
        }
        return lock;
}

static int stv090x_get_lock(struct stv090x_state *state, s32 timeout_dmd, s32 timeout_fec)
{
        u32 reg;
        s32 timer = 0;
        int lock;

        lock = stv090x_get_dmdlock(state, timeout_dmd);
        if (lock)
                lock = stv090x_get_feclock(state, timeout_fec);

        if (lock) {
                lock = 0;

                while ((timer < timeout_fec) && (!lock)) {
                        reg = STV090x_READ_DEMOD(state, TSSTATUS);
                        lock = STV090x_GETFIELD_Px(reg, TSFIFO_LINEOK_FIELD);
                        msleep(1);
                        timer++;
                }
        }

        return lock;
}

static int stv090x_set_s2rolloff(struct stv090x_state *state)
{
        u32 reg;

        if (state->internal->dev_ver <= 0x20) {
                /* rolloff to auto mode if DVBS2 */
                reg = STV090x_READ_DEMOD(state, DEMOD);
                STV090x_SETFIELD_Px(reg, MANUAL_SXROLLOFF_FIELD, 0x00);
                if (STV090x_WRITE_DEMOD(state, DEMOD, reg) < 0)
                        goto err;
        } else {
                /* DVB-S2 rolloff to auto mode if DVBS2 */
                reg = STV090x_READ_DEMOD(state, DEMOD);
                STV090x_SETFIELD_Px(reg, MANUAL_S2ROLLOFF_FIELD, 0x00);
                if (STV090x_WRITE_DEMOD(state, DEMOD, reg) < 0)
                        goto err;
        }
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}


static enum stv090x_signal_state stv090x_algo(struct stv090x_state *state)
{
        struct dvb_frontend *fe = &state->frontend;
        enum stv090x_signal_state signal_state = STV090x_NOCARRIER;
        u32 reg;
        s32 agc1_power, power_iq = 0, i;
        int lock = 0, low_sr = 0;

        reg = STV090x_READ_DEMOD(state, TSCFGH);
        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 1); /* Stop path 1 stream merger */
        if (STV090x_WRITE_DEMOD(state, TSCFGH, reg) < 0)
                goto err;

        if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x5c) < 0) /* Demod stop */
                goto err;

        if (state->internal->dev_ver >= 0x20) {
                if (state->srate > 5000000) {
                        if (STV090x_WRITE_DEMOD(state, CORRELABS, 0x9e) < 0)
                                goto err;
                } else {
                        if (STV090x_WRITE_DEMOD(state, CORRELABS, 0x82) < 0)
                                goto err;
                }
        }

        stv090x_get_lock_tmg(state);

        if (state->algo == STV090x_BLIND_SEARCH) {
                state->tuner_bw = 2 * 36000000; /* wide bw for unknown srate */
                if (STV090x_WRITE_DEMOD(state, TMGCFG2, 0xc0) < 0) /* wider srate scan */
                        goto err;
                if (STV090x_WRITE_DEMOD(state, CORRELMANT, 0x70) < 0)
                        goto err;
                if (stv090x_set_srate(state, 1000000) < 0) /* initial srate = 1Msps */
                        goto err;
        } else {
                /* known srate */
                if (STV090x_WRITE_DEMOD(state, DMDTOM, 0x20) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, TMGCFG, 0xd2) < 0)
                        goto err;

                if (state->srate < 2000000) {
                        /* SR < 2MSPS */
                        if (STV090x_WRITE_DEMOD(state, CORRELMANT, 0x63) < 0)
                                goto err;
                } else {
                        /* SR >= 2Msps */
                        if (STV090x_WRITE_DEMOD(state, CORRELMANT, 0x70) < 0)
                                goto err;
                }

                if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x38) < 0)
                        goto err;

                if (state->internal->dev_ver >= 0x20) {
                        if (STV090x_WRITE_DEMOD(state, KREFTMG, 0x5a) < 0)
                                goto err;
                        if (state->algo == STV090x_COLD_SEARCH)
                                state->tuner_bw = (15 * (stv090x_car_width(state->srate, state->rolloff) + 10000000)) / 10;
                        else if (state->algo == STV090x_WARM_SEARCH)
                                state->tuner_bw = stv090x_car_width(state->srate, state->rolloff) + 10000000;
                }

                /* if cold start or warm  (Symbolrate is known)
                 * use a Narrow symbol rate scan range
                 */
                if (STV090x_WRITE_DEMOD(state, TMGCFG2, 0xc1) < 0) /* narrow srate scan */
                        goto err;

                if (stv090x_set_srate(state, state->srate) < 0)
                        goto err;

                if (stv090x_set_max_srate(state, state->internal->mclk,
                                          state->srate) < 0)
                        goto err;
                if (stv090x_set_min_srate(state, state->internal->mclk,
                                          state->srate) < 0)
                        goto err;

                if (state->srate >= 10000000)
                        low_sr = 0;
                else
                        low_sr = 1;
        }

        /* Setup tuner */
        if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                goto err;

        if (state->config->tuner_set_bbgain) {
                reg = state->config->tuner_bbgain;
                if (reg == 0)
                        reg = 10; /* default: 10dB */
                if (state->config->tuner_set_bbgain(fe, reg) < 0)
                        goto err_gateoff;
        }

        if (state->config->tuner_set_frequency) {
                if (state->config->tuner_set_frequency(fe, state->frequency) < 0)
                        goto err_gateoff;
        }

        if (state->config->tuner_set_bandwidth) {
                if (state->config->tuner_set_bandwidth(fe, state->tuner_bw) < 0)
                        goto err_gateoff;
        }

        if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                goto err;

        msleep(50);

        if (state->config->tuner_get_status) {
                if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                        goto err;
                if (state->config->tuner_get_status(fe, &reg) < 0)
                        goto err_gateoff;
                if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                        goto err;

                if (reg)
                        dprintk(FE_DEBUG, 1, "Tuner phase locked");
                else {
                        dprintk(FE_DEBUG, 1, "Tuner unlocked");
                        return STV090x_NOCARRIER;
                }
        }

        msleep(10);
        agc1_power = MAKEWORD16(STV090x_READ_DEMOD(state, AGCIQIN1),
                                STV090x_READ_DEMOD(state, AGCIQIN0));

        if (agc1_power == 0) {
                /* If AGC1 integrator value is 0
                 * then read POWERI, POWERQ
                 */
                for (i = 0; i < 5; i++) {
                        power_iq += (STV090x_READ_DEMOD(state, POWERI) +
                                     STV090x_READ_DEMOD(state, POWERQ)) >> 1;
                }
                power_iq /= 5;
        }

        if ((agc1_power == 0) && (power_iq < STV090x_IQPOWER_THRESHOLD)) {
                dprintk(FE_ERROR, 1, "No Signal: POWER_IQ=0x%02x", power_iq);
                lock = 0;
                signal_state = STV090x_NOAGC1;
        } else {
                reg = STV090x_READ_DEMOD(state, DEMOD);
                STV090x_SETFIELD_Px(reg, SPECINV_CONTROL_FIELD, state->inversion);

                if (state->internal->dev_ver <= 0x20) {
                        /* rolloff to auto mode if DVBS2 */
                        STV090x_SETFIELD_Px(reg, MANUAL_SXROLLOFF_FIELD, 1);
                } else {
                        /* DVB-S2 rolloff to auto mode if DVBS2 */
                        STV090x_SETFIELD_Px(reg, MANUAL_S2ROLLOFF_FIELD, 1);
                }
                if (STV090x_WRITE_DEMOD(state, DEMOD, reg) < 0)
                        goto err;

                if (stv090x_delivery_search(state) < 0)
                        goto err;

                if (state->algo != STV090x_BLIND_SEARCH) {
                        if (stv090x_start_search(state) < 0)
                                goto err;
                }
        }

        if (signal_state == STV090x_NOAGC1)
                return signal_state;

        if (state->algo == STV090x_BLIND_SEARCH)
                lock = stv090x_blind_search(state);

        else if (state->algo == STV090x_COLD_SEARCH)
                lock = stv090x_get_coldlock(state, state->DemodTimeout);

        else if (state->algo == STV090x_WARM_SEARCH)
                lock = stv090x_get_dmdlock(state, state->DemodTimeout);

        if ((!lock) && (state->algo == STV090x_COLD_SEARCH)) {
                if (!low_sr) {
                        if (stv090x_chk_tmg(state))
                                lock = stv090x_sw_algo(state);
                }
        }

        if (lock)
                signal_state = stv090x_get_sig_params(state);

        if ((lock) && (signal_state == STV090x_RANGEOK)) { /* signal within Range */
                stv090x_optimize_track(state);

                if (state->internal->dev_ver >= 0x20) {
                        /* >= Cut 2.0 :release TS reset after
                         * demod lock and optimized Tracking
                         */
                        reg = STV090x_READ_DEMOD(state, TSCFGH);
                        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0); /* release merger reset */
                        if (STV090x_WRITE_DEMOD(state, TSCFGH, reg) < 0)
                                goto err;

                        msleep(3);

                        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 1); /* merger reset */
                        if (STV090x_WRITE_DEMOD(state, TSCFGH, reg) < 0)
                                goto err;

                        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0); /* release merger reset */
                        if (STV090x_WRITE_DEMOD(state, TSCFGH, reg) < 0)
                                goto err;
                }

                lock = stv090x_get_lock(state, state->FecTimeout,
                                state->FecTimeout);
                if (lock) {
                        if (state->delsys == STV090x_DVBS2) {
                                stv090x_set_s2rolloff(state);

                                reg = STV090x_READ_DEMOD(state, PDELCTRL2);
                                STV090x_SETFIELD_Px(reg, RESET_UPKO_COUNT, 1);
                                if (STV090x_WRITE_DEMOD(state, PDELCTRL2, reg) < 0)
                                        goto err;
                                /* Reset DVBS2 packet delinator error counter */
                                reg = STV090x_READ_DEMOD(state, PDELCTRL2);
                                STV090x_SETFIELD_Px(reg, RESET_UPKO_COUNT, 0);
                                if (STV090x_WRITE_DEMOD(state, PDELCTRL2, reg) < 0)
                                        goto err;

                                if (STV090x_WRITE_DEMOD(state, ERRCTRL1, 0x67) < 0) /* PER */
                                        goto err;
                        } else {
                                if (STV090x_WRITE_DEMOD(state, ERRCTRL1, 0x75) < 0)
                                        goto err;
                        }
                        /* Reset the Total packet counter */
                        if (STV090x_WRITE_DEMOD(state, FBERCPT4, 0x00) < 0)
                                goto err;
                        /* Reset the packet Error counter2 */
                        if (STV090x_WRITE_DEMOD(state, ERRCTRL2, 0xc1) < 0)
                                goto err;
                } else {
                        signal_state = STV090x_NODATA;
                        stv090x_chk_signal(state);
                }
        }
        return signal_state;

err_gateoff:
        stv090x_i2c_gate_ctrl(state, 0);
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_set_pls(struct stv090x_state *state, u32 pls_code)
{
        dprintk(FE_DEBUG, 1, "Set Gold PLS code %d", pls_code);
        if (STV090x_WRITE_DEMOD(state, PLROOT0, pls_code & 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, PLROOT1, (pls_code >> 8) & 0xff) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, PLROOT2, 0x04 | (pls_code >> 16)) < 0)
                goto err;
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_set_mis(struct stv090x_state *state, int mis)
{
        u32 reg;

        if (mis < 0 || mis > 255) {
                dprintk(FE_DEBUG, 1, "Disable MIS filtering");
                reg = STV090x_READ_DEMOD(state, PDELCTRL1);
                STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
                if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
                        goto err;
        } else {
                dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
                reg = STV090x_READ_DEMOD(state, PDELCTRL1);
                STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
                if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
                        goto err;
                if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
                        goto err;
        }
        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
{
        struct stv090x_state *state = fe->demodulator_priv;
        struct dtv_frontend_properties *props = &fe->dtv_property_cache;

        if (props->frequency == 0)
                return DVBFE_ALGO_SEARCH_INVALID;

        switch (props->delivery_system) {
        case SYS_DSS:
                state->delsys = STV090x_DSS;
                break;
        case SYS_DVBS:
                state->delsys = STV090x_DVBS1;
                break;
        case SYS_DVBS2:
                state->delsys = STV090x_DVBS2;
                break;
        default:
                return DVBFE_ALGO_SEARCH_INVALID;
        }

        state->frequency = props->frequency;
        state->srate = props->symbol_rate;
        state->search_mode = STV090x_SEARCH_AUTO;
        state->algo = STV090x_COLD_SEARCH;
        state->fec = STV090x_PRERR;
        if (state->srate > 10000000) {
                dprintk(FE_DEBUG, 1, "Search range: 10 MHz");
                state->search_range = 10000000;
        } else {
                dprintk(FE_DEBUG, 1, "Search range: 5 MHz");
                state->search_range = 5000000;
        }

        stv090x_set_pls(state, props->scrambling_sequence_index);
        stv090x_set_mis(state, props->stream_id);

        if (stv090x_algo(state) == STV090x_RANGEOK) {
                dprintk(FE_DEBUG, 1, "Search success!");
                return DVBFE_ALGO_SEARCH_SUCCESS;
        } else {
                dprintk(FE_DEBUG, 1, "Search failed!");
                return DVBFE_ALGO_SEARCH_FAILED;
        }

        return DVBFE_ALGO_SEARCH_ERROR;
}

static int stv090x_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg, dstatus;
        u8 search_state;

        *status = 0;

        dstatus = STV090x_READ_DEMOD(state, DSTATUS);
        if (STV090x_GETFIELD_Px(dstatus, CAR_LOCK_FIELD))
                *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;

        reg = STV090x_READ_DEMOD(state, DMDSTATE);
        search_state = STV090x_GETFIELD_Px(reg, HEADER_MODE_FIELD);

        switch (search_state) {
        case 0: /* searching */
        case 1: /* first PLH detected */
        default:
                dprintk(FE_DEBUG, 1, "Status: Unlocked (Searching ..)");
                break;

        case 2: /* DVB-S2 mode */
                dprintk(FE_DEBUG, 1, "Delivery system: DVB-S2");
                if (STV090x_GETFIELD_Px(dstatus, LOCK_DEFINITIF_FIELD)) {
                        reg = STV090x_READ_DEMOD(state, PDELSTATUS1);
                        if (STV090x_GETFIELD_Px(reg, PKTDELIN_LOCK_FIELD)) {
                                *status |= FE_HAS_VITERBI;
                                reg = STV090x_READ_DEMOD(state, TSSTATUS);
                                if (STV090x_GETFIELD_Px(reg, TSFIFO_LINEOK_FIELD))
                                        *status |= FE_HAS_SYNC | FE_HAS_LOCK;
                        }
                }
                break;

        case 3: /* DVB-S1/legacy mode */
                dprintk(FE_DEBUG, 1, "Delivery system: DVB-S");
                if (STV090x_GETFIELD_Px(dstatus, LOCK_DEFINITIF_FIELD)) {
                        reg = STV090x_READ_DEMOD(state, VSTATUSVIT);
                        if (STV090x_GETFIELD_Px(reg, LOCKEDVIT_FIELD)) {
                                *status |= FE_HAS_VITERBI;
                                reg = STV090x_READ_DEMOD(state, TSSTATUS);
                                if (STV090x_GETFIELD_Px(reg, TSFIFO_LINEOK_FIELD))
                                        *status |= FE_HAS_SYNC | FE_HAS_LOCK;
                        }
                }
                break;
        }

        return 0;
}

static int stv090x_read_per(struct dvb_frontend *fe, u32 *per)
{
        struct stv090x_state *state = fe->demodulator_priv;

        s32 count_4, count_3, count_2, count_1, count_0, count;
        u32 reg, h, m, l;
        enum fe_status status;

        stv090x_read_status(fe, &status);
        if (!(status & FE_HAS_LOCK)) {
                *per = 1 << 23; /* Max PER */
        } else {
                /* Counter 2 */
                reg = STV090x_READ_DEMOD(state, ERRCNT22);
                h = STV090x_GETFIELD_Px(reg, ERR_CNT2_FIELD);

                reg = STV090x_READ_DEMOD(state, ERRCNT21);
                m = STV090x_GETFIELD_Px(reg, ERR_CNT21_FIELD);

                reg = STV090x_READ_DEMOD(state, ERRCNT20);
                l = STV090x_GETFIELD_Px(reg, ERR_CNT20_FIELD);

                *per = ((h << 16) | (m << 8) | l);

                count_4 = STV090x_READ_DEMOD(state, FBERCPT4);
                count_3 = STV090x_READ_DEMOD(state, FBERCPT3);
                count_2 = STV090x_READ_DEMOD(state, FBERCPT2);
                count_1 = STV090x_READ_DEMOD(state, FBERCPT1);
                count_0 = STV090x_READ_DEMOD(state, FBERCPT0);

                if ((!count_4) && (!count_3)) {
                        count  = (count_2 & 0xff) << 16;
                        count |= (count_1 & 0xff) <<  8;
                        count |=  count_0 & 0xff;
                } else {
                        count = 1 << 24;
                }
                if (count == 0)
                        *per = 1;
        }
        if (STV090x_WRITE_DEMOD(state, FBERCPT4, 0) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, ERRCTRL2, 0xc1) < 0)
                goto err;

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_table_lookup(const struct stv090x_tab *tab, int max, int val)
{
        int res = 0;
        int min = 0, med;

        if ((val >= tab[min].read && val < tab[max].read) ||
            (val >= tab[max].read && val < tab[min].read)) {
                while ((max - min) > 1) {
                        med = (max + min) / 2;
                        if ((val >= tab[min].read && val < tab[med].read) ||
                            (val >= tab[med].read && val < tab[min].read))
                                max = med;
                        else
                                min = med;
                }
                res = ((val - tab[min].read) *
                       (tab[max].real - tab[min].real) /
                       (tab[max].read - tab[min].read)) +
                        tab[min].real;
        } else {
                if (tab[min].read < tab[max].read) {
                        if (val < tab[min].read)
                                res = tab[min].real;
                        else if (val >= tab[max].read)
                                res = tab[max].real;
                } else {
                        if (val >= tab[min].read)
                                res = tab[min].real;
                        else if (val < tab[max].read)
                                res = tab[max].real;
                }
        }

        return res;
}

static int stv090x_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg;
        s32 agc_0, agc_1, agc;
        s32 str;

        reg = STV090x_READ_DEMOD(state, AGCIQIN1);
        agc_1 = STV090x_GETFIELD_Px(reg, AGCIQ_VALUE_FIELD);
        reg = STV090x_READ_DEMOD(state, AGCIQIN0);
        agc_0 = STV090x_GETFIELD_Px(reg, AGCIQ_VALUE_FIELD);
        agc = MAKEWORD16(agc_1, agc_0);

        str = stv090x_table_lookup(stv090x_rf_tab,
                ARRAY_SIZE(stv090x_rf_tab) - 1, agc);
        if (agc > stv090x_rf_tab[0].read)
                str = 0;
        else if (agc < stv090x_rf_tab[ARRAY_SIZE(stv090x_rf_tab) - 1].read)
                str = -100;
        *strength = (str + 100) * 0xFFFF / 100;

        return 0;
}

static int stv090x_read_cnr(struct dvb_frontend *fe, u16 *cnr)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg_0, reg_1, reg, i;
        s32 val_0, val_1, val = 0;
        u8 lock_f;
        s32 div;
        u32 last;

        switch (state->delsys) {
        case STV090x_DVBS2:
                reg = STV090x_READ_DEMOD(state, DSTATUS);
                lock_f = STV090x_GETFIELD_Px(reg, LOCK_DEFINITIF_FIELD);
                if (lock_f) {
                        msleep(5);
                        for (i = 0; i < 16; i++) {
                                reg_1 = STV090x_READ_DEMOD(state, NNOSPLHT1);
                                val_1 = STV090x_GETFIELD_Px(reg_1, NOSPLHT_NORMED_FIELD);
                                reg_0 = STV090x_READ_DEMOD(state, NNOSPLHT0);
                                val_0 = STV090x_GETFIELD_Px(reg_0, NOSPLHT_NORMED_FIELD);
                                val  += MAKEWORD16(val_1, val_0);
                                msleep(1);
                        }
                        val /= 16;
                        last = ARRAY_SIZE(stv090x_s2cn_tab) - 1;
                        div = stv090x_s2cn_tab[last].real -
                              stv090x_s2cn_tab[3].real;
                        val = stv090x_table_lookup(stv090x_s2cn_tab, last, val);
                        if (val < 0)
                                val = 0;
                        *cnr = val * 0xFFFF / div;
                }
                break;

        case STV090x_DVBS1:
        case STV090x_DSS:
                reg = STV090x_READ_DEMOD(state, DSTATUS);
                lock_f = STV090x_GETFIELD_Px(reg, LOCK_DEFINITIF_FIELD);
                if (lock_f) {
                        msleep(5);
                        for (i = 0; i < 16; i++) {
                                reg_1 = STV090x_READ_DEMOD(state, NOSDATAT1);
                                val_1 = STV090x_GETFIELD_Px(reg_1, NOSDATAT_UNNORMED_FIELD);
                                reg_0 = STV090x_READ_DEMOD(state, NOSDATAT0);
                                val_0 = STV090x_GETFIELD_Px(reg_0, NOSDATAT_UNNORMED_FIELD);
                                val  += MAKEWORD16(val_1, val_0);
                                msleep(1);
                        }
                        val /= 16;
                        last = ARRAY_SIZE(stv090x_s1cn_tab) - 1;
                        div = stv090x_s1cn_tab[last].real -
                              stv090x_s1cn_tab[0].real;
                        val = stv090x_table_lookup(stv090x_s1cn_tab, last, val);
                        *cnr = val * 0xFFFF / div;
                }
                break;
        default:
                break;
        }

        return 0;
}

static int stv090x_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg;

        reg = STV090x_READ_DEMOD(state, DISTXCTL);
        switch (tone) {
        case SEC_TONE_ON:
                STV090x_SETFIELD_Px(reg, DISTX_MODE_FIELD, 0);
                STV090x_SETFIELD_Px(reg, DISEQC_RESET_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                        goto err;
                STV090x_SETFIELD_Px(reg, DISEQC_RESET_FIELD, 0);
                if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                        goto err;
                break;

        case SEC_TONE_OFF:
                STV090x_SETFIELD_Px(reg, DISTX_MODE_FIELD, 0);
                STV090x_SETFIELD_Px(reg, DISEQC_RESET_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                        goto err;
                break;
        default:
                return -EINVAL;
        }

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}


static enum dvbfe_algo stv090x_frontend_algo(struct dvb_frontend *fe)
{
        return DVBFE_ALGO_CUSTOM;
}

static int stv090x_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg, idle = 0, fifo_full = 1;
        int i;

        reg = STV090x_READ_DEMOD(state, DISTXCTL);

        STV090x_SETFIELD_Px(reg, DISTX_MODE_FIELD,
                (state->config->diseqc_envelope_mode) ? 4 : 2);
        STV090x_SETFIELD_Px(reg, DISEQC_RESET_FIELD, 1);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;
        STV090x_SETFIELD_Px(reg, DISEQC_RESET_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;

        STV090x_SETFIELD_Px(reg, DIS_PRECHARGE_FIELD, 1);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;

        for (i = 0; i < cmd->msg_len; i++) {

                while (fifo_full) {
                        reg = STV090x_READ_DEMOD(state, DISTXSTATUS);
                        fifo_full = STV090x_GETFIELD_Px(reg, FIFO_FULL_FIELD);
                }

                if (STV090x_WRITE_DEMOD(state, DISTXDATA, cmd->msg[i]) < 0)
                        goto err;
        }
        reg = STV090x_READ_DEMOD(state, DISTXCTL);
        STV090x_SETFIELD_Px(reg, DIS_PRECHARGE_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;

        i = 0;

        while ((!idle) && (i < 10)) {
                reg = STV090x_READ_DEMOD(state, DISTXSTATUS);
                idle = STV090x_GETFIELD_Px(reg, TX_IDLE_FIELD);
                msleep(10);
                i++;
        }

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_send_diseqc_burst(struct dvb_frontend *fe,
                                     enum fe_sec_mini_cmd burst)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg, idle = 0, fifo_full = 1;
        u8 mode, value;
        int i;

        reg = STV090x_READ_DEMOD(state, DISTXCTL);

        if (burst == SEC_MINI_A) {
                mode = (state->config->diseqc_envelope_mode) ? 5 : 3;
                value = 0x00;
        } else {
                mode = (state->config->diseqc_envelope_mode) ? 4 : 2;
                value = 0xFF;
        }

        STV090x_SETFIELD_Px(reg, DISTX_MODE_FIELD, mode);
        STV090x_SETFIELD_Px(reg, DISEQC_RESET_FIELD, 1);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;
        STV090x_SETFIELD_Px(reg, DISEQC_RESET_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;

        STV090x_SETFIELD_Px(reg, DIS_PRECHARGE_FIELD, 1);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;

        while (fifo_full) {
                reg = STV090x_READ_DEMOD(state, DISTXSTATUS);
                fifo_full = STV090x_GETFIELD_Px(reg, FIFO_FULL_FIELD);
        }

        if (STV090x_WRITE_DEMOD(state, DISTXDATA, value) < 0)
                goto err;

        reg = STV090x_READ_DEMOD(state, DISTXCTL);
        STV090x_SETFIELD_Px(reg, DIS_PRECHARGE_FIELD, 0);
        if (STV090x_WRITE_DEMOD(state, DISTXCTL, reg) < 0)
                goto err;

        i = 0;

        while ((!idle) && (i < 10)) {
                reg = STV090x_READ_DEMOD(state, DISTXSTATUS);
                idle = STV090x_GETFIELD_Px(reg, TX_IDLE_FIELD);
                msleep(10);
                i++;
        }

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg = 0, i = 0, rx_end = 0;

        while ((rx_end != 1) && (i < 10)) {
                msleep(10);
                i++;
                reg = STV090x_READ_DEMOD(state, DISRX_ST0);
                rx_end = STV090x_GETFIELD_Px(reg, RX_END_FIELD);
        }

        if (rx_end) {
                reply->msg_len = STV090x_GETFIELD_Px(reg, FIFO_BYTENBR_FIELD);
                for (i = 0; i < reply->msg_len; i++)
                        reply->msg[i] = STV090x_READ_DEMOD(state, DISRXDATA);
        }

        return 0;
}

static int stv090x_sleep(struct dvb_frontend *fe)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg;
        u8 full_standby = 0;

        if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                goto err;

        if (state->config->tuner_sleep) {
                if (state->config->tuner_sleep(fe) < 0)
                        goto err_gateoff;
        }

        if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                goto err;

        dprintk(FE_DEBUG, 1, "Set %s(%d) to sleep",
                state->device == STV0900 ? "STV0900" : "STV0903",
                state->demod);

        mutex_lock(&state->internal->demod_lock);

        switch (state->demod) {
        case STV090x_DEMODULATOR_0:
                /* power off ADC 1 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR1);
                STV090x_SETFIELD(reg, ADC1_PON_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_TSTTNR1, reg) < 0)
                        goto err_unlock;
                /* power off DiSEqC 1 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR2);
                STV090x_SETFIELD(reg, DISEQC1_PON_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_TSTTNR2, reg) < 0)
                        goto err_unlock;

                /* check whether path 2 is already sleeping, that is when
                   ADC2 is off */
                reg = stv090x_read_reg(state, STV090x_TSTTNR3);
                if (STV090x_GETFIELD(reg, ADC2_PON_FIELD) == 0)
                        full_standby = 1;

                /* stop clocks */
                reg = stv090x_read_reg(state, STV090x_STOPCLK1);
                /* packet delineator 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKPKDT1_FIELD, 1);
                /* ADC 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKADCI1_FIELD, 1);
                /* FEC clock is shared between the two paths, only stop it
                   when full standby is possible */
                if (full_standby)
                        STV090x_SETFIELD(reg, STOP_CLKFEC_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_STOPCLK1, reg) < 0)
                        goto err_unlock;
                reg = stv090x_read_reg(state, STV090x_STOPCLK2);
                /* sampling 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKSAMP1_FIELD, 1);
                /* viterbi 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKVIT1_FIELD, 1);
                /* TS clock is shared between the two paths, only stop it
                   when full standby is possible */
                if (full_standby)
                        STV090x_SETFIELD(reg, STOP_CLKTS_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_STOPCLK2, reg) < 0)
                        goto err_unlock;
                break;

        case STV090x_DEMODULATOR_1:
                /* power off ADC 2 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR3);
                STV090x_SETFIELD(reg, ADC2_PON_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_TSTTNR3, reg) < 0)
                        goto err_unlock;
                /* power off DiSEqC 2 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR4);
                STV090x_SETFIELD(reg, DISEQC2_PON_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_TSTTNR4, reg) < 0)
                        goto err_unlock;

                /* check whether path 1 is already sleeping, that is when
                   ADC1 is off */
                reg = stv090x_read_reg(state, STV090x_TSTTNR1);
                if (STV090x_GETFIELD(reg, ADC1_PON_FIELD) == 0)
                        full_standby = 1;

                /* stop clocks */
                reg = stv090x_read_reg(state, STV090x_STOPCLK1);
                /* packet delineator 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKPKDT2_FIELD, 1);
                /* ADC 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKADCI2_FIELD, 1);
                /* FEC clock is shared between the two paths, only stop it
                   when full standby is possible */
                if (full_standby)
                        STV090x_SETFIELD(reg, STOP_CLKFEC_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_STOPCLK1, reg) < 0)
                        goto err_unlock;
                reg = stv090x_read_reg(state, STV090x_STOPCLK2);
                /* sampling 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKSAMP2_FIELD, 1);
                /* viterbi 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKVIT2_FIELD, 1);
                /* TS clock is shared between the two paths, only stop it
                   when full standby is possible */
                if (full_standby)
                        STV090x_SETFIELD(reg, STOP_CLKTS_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_STOPCLK2, reg) < 0)
                        goto err_unlock;
                break;

        default:
                dprintk(FE_ERROR, 1, "Wrong demodulator!");
                break;
        }

        if (full_standby) {
                /* general power off */
                reg = stv090x_read_reg(state, STV090x_SYNTCTRL);
                STV090x_SETFIELD(reg, STANDBY_FIELD, 0x01);
                if (stv090x_write_reg(state, STV090x_SYNTCTRL, reg) < 0)
                        goto err_unlock;
        }

        mutex_unlock(&state->internal->demod_lock);
        return 0;

err_gateoff:
        stv090x_i2c_gate_ctrl(state, 0);
        goto err;
err_unlock:
        mutex_unlock(&state->internal->demod_lock);
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_wakeup(struct dvb_frontend *fe)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u32 reg;

        dprintk(FE_DEBUG, 1, "Wake %s(%d) from standby",
                state->device == STV0900 ? "STV0900" : "STV0903",
                state->demod);

        mutex_lock(&state->internal->demod_lock);

        /* general power on */
        reg = stv090x_read_reg(state, STV090x_SYNTCTRL);
        STV090x_SETFIELD(reg, STANDBY_FIELD, 0x00);
        if (stv090x_write_reg(state, STV090x_SYNTCTRL, reg) < 0)
                goto err;

        switch (state->demod) {
        case STV090x_DEMODULATOR_0:
                /* power on ADC 1 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR1);
                STV090x_SETFIELD(reg, ADC1_PON_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_TSTTNR1, reg) < 0)
                        goto err;
                /* power on DiSEqC 1 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR2);
                STV090x_SETFIELD(reg, DISEQC1_PON_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_TSTTNR2, reg) < 0)
                        goto err;

                /* activate clocks */
                reg = stv090x_read_reg(state, STV090x_STOPCLK1);
                /* packet delineator 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKPKDT1_FIELD, 0);
                /* ADC 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKADCI1_FIELD, 0);
                /* FEC clock */
                STV090x_SETFIELD(reg, STOP_CLKFEC_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_STOPCLK1, reg) < 0)
                        goto err;
                reg = stv090x_read_reg(state, STV090x_STOPCLK2);
                /* sampling 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKSAMP1_FIELD, 0);
                /* viterbi 1 clock */
                STV090x_SETFIELD(reg, STOP_CLKVIT1_FIELD, 0);
                /* TS clock */
                STV090x_SETFIELD(reg, STOP_CLKTS_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_STOPCLK2, reg) < 0)
                        goto err;
                break;

        case STV090x_DEMODULATOR_1:
                /* power on ADC 2 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR3);
                STV090x_SETFIELD(reg, ADC2_PON_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_TSTTNR3, reg) < 0)
                        goto err;
                /* power on DiSEqC 2 */
                reg = stv090x_read_reg(state, STV090x_TSTTNR4);
                STV090x_SETFIELD(reg, DISEQC2_PON_FIELD, 1);
                if (stv090x_write_reg(state, STV090x_TSTTNR4, reg) < 0)
                        goto err;

                /* activate clocks */
                reg = stv090x_read_reg(state, STV090x_STOPCLK1);
                /* packet delineator 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKPKDT2_FIELD, 0);
                /* ADC 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKADCI2_FIELD, 0);
                /* FEC clock */
                STV090x_SETFIELD(reg, STOP_CLKFEC_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_STOPCLK1, reg) < 0)
                        goto err;
                reg = stv090x_read_reg(state, STV090x_STOPCLK2);
                /* sampling 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKSAMP2_FIELD, 0);
                /* viterbi 2 clock */
                STV090x_SETFIELD(reg, STOP_CLKVIT2_FIELD, 0);
                /* TS clock */
                STV090x_SETFIELD(reg, STOP_CLKTS_FIELD, 0);
                if (stv090x_write_reg(state, STV090x_STOPCLK2, reg) < 0)
                        goto err;
                break;

        default:
                dprintk(FE_ERROR, 1, "Wrong demodulator!");
                break;
        }

        mutex_unlock(&state->internal->demod_lock);
        return 0;
err:
        mutex_unlock(&state->internal->demod_lock);
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static void stv090x_release(struct dvb_frontend *fe)
{
        struct stv090x_state *state = fe->demodulator_priv;

        state->internal->num_used--;
        if (state->internal->num_used <= 0) {

                dprintk(FE_ERROR, 1, "Actually removing");

                remove_dev(state->internal);
                kfree(state->internal);
        }

        kfree(state);
}

static int stv090x_ldpc_mode(struct stv090x_state *state, enum stv090x_mode ldpc_mode)
{
        u32 reg = 0;

        reg = stv090x_read_reg(state, STV090x_GENCFG);

        switch (ldpc_mode) {
        case STV090x_DUAL:
        default:
                if ((state->demod_mode != STV090x_DUAL) || (STV090x_GETFIELD(reg, DDEMOD_FIELD) != 1)) {
                        /* set LDPC to dual mode */
                        if (stv090x_write_reg(state, STV090x_GENCFG, 0x1d) < 0)
                                goto err;

                        state->demod_mode = STV090x_DUAL;

                        reg = stv090x_read_reg(state, STV090x_TSTRES0);
                        STV090x_SETFIELD(reg, FRESFEC_FIELD, 0x1);
                        if (stv090x_write_reg(state, STV090x_TSTRES0, reg) < 0)
                                goto err;
                        STV090x_SETFIELD(reg, FRESFEC_FIELD, 0x0);
                        if (stv090x_write_reg(state, STV090x_TSTRES0, reg) < 0)
                                goto err;

                        if (STV090x_WRITE_DEMOD(state, MODCODLST0, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST1, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST2, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST3, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST4, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST5, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST6, 0xff) < 0)
                                goto err;

                        if (STV090x_WRITE_DEMOD(state, MODCODLST7, 0xcc) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST8, 0xcc) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLST9, 0xcc) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLSTA, 0xcc) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLSTB, 0xcc) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLSTC, 0xcc) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLSTD, 0xcc) < 0)
                                goto err;

                        if (STV090x_WRITE_DEMOD(state, MODCODLSTE, 0xff) < 0)
                                goto err;
                        if (STV090x_WRITE_DEMOD(state, MODCODLSTF, 0xcf) < 0)
                                goto err;
                }
                break;

        case STV090x_SINGLE:
                if (stv090x_stop_modcod(state) < 0)
                        goto err;
                if (stv090x_activate_modcod_single(state) < 0)
                        goto err;

                if (state->demod == STV090x_DEMODULATOR_1) {
                        if (stv090x_write_reg(state, STV090x_GENCFG, 0x06) < 0) /* path 2 */
                                goto err;
                } else {
                        if (stv090x_write_reg(state, STV090x_GENCFG, 0x04) < 0) /* path 1 */
                                goto err;
                }

                reg = stv090x_read_reg(state, STV090x_TSTRES0);
                STV090x_SETFIELD(reg, FRESFEC_FIELD, 0x1);
                if (stv090x_write_reg(state, STV090x_TSTRES0, reg) < 0)
                        goto err;
                STV090x_SETFIELD(reg, FRESFEC_FIELD, 0x0);
                if (stv090x_write_reg(state, STV090x_TSTRES0, reg) < 0)
                        goto err;

                reg = STV090x_READ_DEMOD(state, PDELCTRL1);
                STV090x_SETFIELD_Px(reg, ALGOSWRST_FIELD, 0x01);
                if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
                        goto err;
                STV090x_SETFIELD_Px(reg, ALGOSWRST_FIELD, 0x00);
                if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
                        goto err;
                break;
        }

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

/* return (Hz), clk in Hz*/
static u32 stv090x_get_mclk(struct stv090x_state *state)
{
        const struct stv090x_config *config = state->config;
        u32 div, reg;
        u8 ratio;

        div = stv090x_read_reg(state, STV090x_NCOARSE);
        reg = stv090x_read_reg(state, STV090x_SYNTCTRL);
        ratio = STV090x_GETFIELD(reg, SELX1RATIO_FIELD) ? 4 : 6;

        return (div + 1) * config->xtal / ratio; /* kHz */
}

static int stv090x_set_mclk(struct stv090x_state *state, u32 mclk, u32 clk)
{
        const struct stv090x_config *config = state->config;
        u32 reg, div, clk_sel;

        reg = stv090x_read_reg(state, STV090x_SYNTCTRL);
        clk_sel = ((STV090x_GETFIELD(reg, SELX1RATIO_FIELD) == 1) ? 4 : 6);

        div = ((clk_sel * mclk) / config->xtal) - 1;

        reg = stv090x_read_reg(state, STV090x_NCOARSE);
        STV090x_SETFIELD(reg, M_DIV_FIELD, div);
        if (stv090x_write_reg(state, STV090x_NCOARSE, reg) < 0)
                goto err;

        state->internal->mclk = stv090x_get_mclk(state);

        /*Set the DiseqC frequency to 22KHz */
        div = state->internal->mclk / 704000;
        if (STV090x_WRITE_DEMOD(state, F22TX, div) < 0)
                goto err;
        if (STV090x_WRITE_DEMOD(state, F22RX, div) < 0)
                goto err;

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv0900_set_tspath(struct stv090x_state *state)
{
        u32 reg;

        if (state->internal->dev_ver >= 0x20) {
                switch (state->config->ts1_mode) {
                case STV090x_TSMODE_PARALLEL_PUNCTURED:
                case STV090x_TSMODE_DVBCI:
                        switch (state->config->ts2_mode) {
                        case STV090x_TSMODE_SERIAL_PUNCTURED:
                        case STV090x_TSMODE_SERIAL_CONTINUOUS:
                        default:
                                stv090x_write_reg(state, STV090x_TSGENERAL, 0x00);
                                break;

                        case STV090x_TSMODE_PARALLEL_PUNCTURED:
                        case STV090x_TSMODE_DVBCI:
                                if (stv090x_write_reg(state, STV090x_TSGENERAL, 0x06) < 0) /* Mux'd stream mode */
                                        goto err;
                                reg = stv090x_read_reg(state, STV090x_P1_TSCFGM);
                                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
                                if (stv090x_write_reg(state, STV090x_P1_TSCFGM, reg) < 0)
                                        goto err;
                                reg = stv090x_read_reg(state, STV090x_P2_TSCFGM);
                                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
                                if (stv090x_write_reg(state, STV090x_P2_TSCFGM, reg) < 0)
                                        goto err;
                                if (stv090x_write_reg(state, STV090x_P1_TSSPEED, 0x14) < 0)
                                        goto err;
                                if (stv090x_write_reg(state, STV090x_P2_TSSPEED, 0x28) < 0)
                                        goto err;
                                break;
                        }
                        break;

                case STV090x_TSMODE_SERIAL_PUNCTURED:
                case STV090x_TSMODE_SERIAL_CONTINUOUS:
                default:
                        switch (state->config->ts2_mode) {
                        case STV090x_TSMODE_SERIAL_PUNCTURED:
                        case STV090x_TSMODE_SERIAL_CONTINUOUS:
                        default:
                                if (stv090x_write_reg(state, STV090x_TSGENERAL, 0x0c) < 0)
                                        goto err;
                                break;

                        case STV090x_TSMODE_PARALLEL_PUNCTURED:
                        case STV090x_TSMODE_DVBCI:
                                if (stv090x_write_reg(state, STV090x_TSGENERAL, 0x0a) < 0)
                                        goto err;
                                break;
                        }
                        break;
                }
        } else {
                switch (state->config->ts1_mode) {
                case STV090x_TSMODE_PARALLEL_PUNCTURED:
                case STV090x_TSMODE_DVBCI:
                        switch (state->config->ts2_mode) {
                        case STV090x_TSMODE_SERIAL_PUNCTURED:
                        case STV090x_TSMODE_SERIAL_CONTINUOUS:
                        default:
                                stv090x_write_reg(state, STV090x_TSGENERAL1X, 0x10);
                                break;

                        case STV090x_TSMODE_PARALLEL_PUNCTURED:
                        case STV090x_TSMODE_DVBCI:
                                stv090x_write_reg(state, STV090x_TSGENERAL1X, 0x16);
                                reg = stv090x_read_reg(state, STV090x_P1_TSCFGM);
                                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
                                if (stv090x_write_reg(state, STV090x_P1_TSCFGM, reg) < 0)
                                        goto err;
                                reg = stv090x_read_reg(state, STV090x_P1_TSCFGM);
                                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 0);
                                if (stv090x_write_reg(state, STV090x_P1_TSCFGM, reg) < 0)
                                        goto err;
                                if (stv090x_write_reg(state, STV090x_P1_TSSPEED, 0x14) < 0)
                                        goto err;
                                if (stv090x_write_reg(state, STV090x_P2_TSSPEED, 0x28) < 0)
                                        goto err;
                                break;
                        }
                        break;

                case STV090x_TSMODE_SERIAL_PUNCTURED:
                case STV090x_TSMODE_SERIAL_CONTINUOUS:
                default:
                        switch (state->config->ts2_mode) {
                        case STV090x_TSMODE_SERIAL_PUNCTURED:
                        case STV090x_TSMODE_SERIAL_CONTINUOUS:
                        default:
                                stv090x_write_reg(state, STV090x_TSGENERAL1X, 0x14);
                                break;

                        case STV090x_TSMODE_PARALLEL_PUNCTURED:
                        case STV090x_TSMODE_DVBCI:
                                stv090x_write_reg(state, STV090x_TSGENERAL1X, 0x12);
                                break;
                        }
                        break;
                }
        }

        switch (state->config->ts1_mode) {
        case STV090x_TSMODE_PARALLEL_PUNCTURED:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts1_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x00);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x00);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_DVBCI:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts1_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x00);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x01);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_SERIAL_PUNCTURED:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts1_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x01);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x00);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_SERIAL_CONTINUOUS:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts1_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x01);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x01);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        default:
                break;
        }

        switch (state->config->ts2_mode) {
        case STV090x_TSMODE_PARALLEL_PUNCTURED:
                reg = stv090x_read_reg(state, STV090x_P2_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts2_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x00);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x00);
                if (stv090x_write_reg(state, STV090x_P2_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_DVBCI:
                reg = stv090x_read_reg(state, STV090x_P2_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts2_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x00);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x01);
                if (stv090x_write_reg(state, STV090x_P2_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_SERIAL_PUNCTURED:
                reg = stv090x_read_reg(state, STV090x_P2_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts2_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x01);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x00);
                if (stv090x_write_reg(state, STV090x_P2_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_SERIAL_CONTINUOUS:
                reg = stv090x_read_reg(state, STV090x_P2_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_TEIUPDATE_FIELD, state->config->ts2_tei);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x01);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x01);
                if (stv090x_write_reg(state, STV090x_P2_TSCFGH, reg) < 0)
                        goto err;
                break;

        default:
                break;
        }

        if (state->config->ts1_clk > 0) {
                u32 speed;

                switch (state->config->ts1_mode) {
                case STV090x_TSMODE_PARALLEL_PUNCTURED:
                case STV090x_TSMODE_DVBCI:
                default:
                        speed = state->internal->mclk /
                                (state->config->ts1_clk / 4);
                        if (speed < 0x08)
                                speed = 0x08;
                        if (speed > 0xFF)
                                speed = 0xFF;
                        break;
                case STV090x_TSMODE_SERIAL_PUNCTURED:
                case STV090x_TSMODE_SERIAL_CONTINUOUS:
                        speed = state->internal->mclk /
                                (state->config->ts1_clk / 32);
                        if (speed < 0x20)
                                speed = 0x20;
                        if (speed > 0xFF)
                                speed = 0xFF;
                        break;
                }
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGM);
                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGM, reg) < 0)
                        goto err;
                if (stv090x_write_reg(state, STV090x_P1_TSSPEED, speed) < 0)
                        goto err;
        }

        if (state->config->ts2_clk > 0) {
                u32 speed;

                switch (state->config->ts2_mode) {
                case STV090x_TSMODE_PARALLEL_PUNCTURED:
                case STV090x_TSMODE_DVBCI:
                default:
                        speed = state->internal->mclk /
                                (state->config->ts2_clk / 4);
                        if (speed < 0x08)
                                speed = 0x08;
                        if (speed > 0xFF)
                                speed = 0xFF;
                        break;
                case STV090x_TSMODE_SERIAL_PUNCTURED:
                case STV090x_TSMODE_SERIAL_CONTINUOUS:
                        speed = state->internal->mclk /
                                (state->config->ts2_clk / 32);
                        if (speed < 0x20)
                                speed = 0x20;
                        if (speed > 0xFF)
                                speed = 0xFF;
                        break;
                }
                reg = stv090x_read_reg(state, STV090x_P2_TSCFGM);
                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
                if (stv090x_write_reg(state, STV090x_P2_TSCFGM, reg) < 0)
                        goto err;
                if (stv090x_write_reg(state, STV090x_P2_TSSPEED, speed) < 0)
                        goto err;
        }

        reg = stv090x_read_reg(state, STV090x_P2_TSCFGH);
        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0x01);
        if (stv090x_write_reg(state, STV090x_P2_TSCFGH, reg) < 0)
                goto err;
        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0x00);
        if (stv090x_write_reg(state, STV090x_P2_TSCFGH, reg) < 0)
                goto err;

        reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0x01);
        if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                goto err;
        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0x00);
        if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                goto err;

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv0903_set_tspath(struct stv090x_state *state)
{
        u32 reg;

        if (state->internal->dev_ver >= 0x20) {
                switch (state->config->ts1_mode) {
                case STV090x_TSMODE_PARALLEL_PUNCTURED:
                case STV090x_TSMODE_DVBCI:
                        stv090x_write_reg(state, STV090x_TSGENERAL, 0x00);
                        break;

                case STV090x_TSMODE_SERIAL_PUNCTURED:
                case STV090x_TSMODE_SERIAL_CONTINUOUS:
                default:
                        stv090x_write_reg(state, STV090x_TSGENERAL, 0x0c);
                        break;
                }
        } else {
                switch (state->config->ts1_mode) {
                case STV090x_TSMODE_PARALLEL_PUNCTURED:
                case STV090x_TSMODE_DVBCI:
                        stv090x_write_reg(state, STV090x_TSGENERAL1X, 0x10);
                        break;

                case STV090x_TSMODE_SERIAL_PUNCTURED:
                case STV090x_TSMODE_SERIAL_CONTINUOUS:
                default:
                        stv090x_write_reg(state, STV090x_TSGENERAL1X, 0x14);
                        break;
                }
        }

        switch (state->config->ts1_mode) {
        case STV090x_TSMODE_PARALLEL_PUNCTURED:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x00);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x00);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_DVBCI:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x00);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x01);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_SERIAL_PUNCTURED:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x01);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x00);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        case STV090x_TSMODE_SERIAL_CONTINUOUS:
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
                STV090x_SETFIELD_Px(reg, TSFIFO_SERIAL_FIELD, 0x01);
                STV090x_SETFIELD_Px(reg, TSFIFO_DVBCI_FIELD, 0x01);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                        goto err;
                break;

        default:
                break;
        }

        if (state->config->ts1_clk > 0) {
                u32 speed;

                switch (state->config->ts1_mode) {
                case STV090x_TSMODE_PARALLEL_PUNCTURED:
                case STV090x_TSMODE_DVBCI:
                default:
                        speed = state->internal->mclk /
                                (state->config->ts1_clk / 4);
                        if (speed < 0x08)
                                speed = 0x08;
                        if (speed > 0xFF)
                                speed = 0xFF;
                        break;
                case STV090x_TSMODE_SERIAL_PUNCTURED:
                case STV090x_TSMODE_SERIAL_CONTINUOUS:
                        speed = state->internal->mclk /
                                (state->config->ts1_clk / 32);
                        if (speed < 0x20)
                                speed = 0x20;
                        if (speed > 0xFF)
                                speed = 0xFF;
                        break;
                }
                reg = stv090x_read_reg(state, STV090x_P1_TSCFGM);
                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
                if (stv090x_write_reg(state, STV090x_P1_TSCFGM, reg) < 0)
                        goto err;
                if (stv090x_write_reg(state, STV090x_P1_TSSPEED, speed) < 0)
                        goto err;
        }

        reg = stv090x_read_reg(state, STV090x_P1_TSCFGH);
        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0x01);
        if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                goto err;
        STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0x00);
        if (stv090x_write_reg(state, STV090x_P1_TSCFGH, reg) < 0)
                goto err;

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_init(struct dvb_frontend *fe)
{
        struct stv090x_state *state = fe->demodulator_priv;
        const struct stv090x_config *config = state->config;
        u32 reg;

        if (state->internal->mclk == 0) {
                /* call tuner init to configure the tuner's clock output
                   divider directly before setting up the master clock of
                   the stv090x. */
                if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                        goto err;

                if (config->tuner_init) {
                        if (config->tuner_init(fe) < 0)
                                goto err_gateoff;
                }

                if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                        goto err;

                stv090x_set_mclk(state, 135000000, config->xtal); /* 135 Mhz */
                msleep(5);
                if (stv090x_write_reg(state, STV090x_SYNTCTRL,
                                      0x20 | config->clk_mode) < 0)
                        goto err;
                stv090x_get_mclk(state);
        }

        if (stv090x_wakeup(fe) < 0) {
                dprintk(FE_ERROR, 1, "Error waking device");
                goto err;
        }

        if (stv090x_ldpc_mode(state, state->demod_mode) < 0)
                goto err;

        reg = STV090x_READ_DEMOD(state, TNRCFG2);
        STV090x_SETFIELD_Px(reg, TUN_IQSWAP_FIELD, state->inversion);
        if (STV090x_WRITE_DEMOD(state, TNRCFG2, reg) < 0)
                goto err;
        reg = STV090x_READ_DEMOD(state, DEMOD);
        STV090x_SETFIELD_Px(reg, ROLLOFF_CONTROL_FIELD, state->rolloff);
        if (STV090x_WRITE_DEMOD(state, DEMOD, reg) < 0)
                goto err;

        if (stv090x_i2c_gate_ctrl(state, 1) < 0)
                goto err;

        if (config->tuner_set_mode) {
                if (config->tuner_set_mode(fe, TUNER_WAKE) < 0)
                        goto err_gateoff;
        }

        if (config->tuner_init) {
                if (config->tuner_init(fe) < 0)
                        goto err_gateoff;
        }

        if (stv090x_i2c_gate_ctrl(state, 0) < 0)
                goto err;

        if (state->device == STV0900) {
                if (stv0900_set_tspath(state) < 0)
                        goto err;
        } else {
                if (stv0903_set_tspath(state) < 0)
                        goto err;
        }

        return 0;

err_gateoff:
        stv090x_i2c_gate_ctrl(state, 0);
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_setup(struct dvb_frontend *fe)
{
        struct stv090x_state *state = fe->demodulator_priv;
        const struct stv090x_config *config = state->config;
        const struct stv090x_reg *stv090x_initval = NULL;
        const struct stv090x_reg *stv090x_cut20_val = NULL;
        unsigned long t1_size = 0, t2_size = 0;
        u32 reg = 0;

        int i;

        if (state->device == STV0900) {
                dprintk(FE_DEBUG, 1, "Initializing STV0900");
                stv090x_initval = stv0900_initval;
                t1_size = ARRAY_SIZE(stv0900_initval);
                stv090x_cut20_val = stv0900_cut20_val;
                t2_size = ARRAY_SIZE(stv0900_cut20_val);
        } else if (state->device == STV0903) {
                dprintk(FE_DEBUG, 1, "Initializing STV0903");
                stv090x_initval = stv0903_initval;
                t1_size = ARRAY_SIZE(stv0903_initval);
                stv090x_cut20_val = stv0903_cut20_val;
                t2_size = ARRAY_SIZE(stv0903_cut20_val);
        }

        /* STV090x init */

        /* Stop Demod */
        if (stv090x_write_reg(state, STV090x_P1_DMDISTATE, 0x5c) < 0)
                goto err;
        if (state->device == STV0900)
                if (stv090x_write_reg(state, STV090x_P2_DMDISTATE, 0x5c) < 0)
                        goto err;

        msleep(5);

        /* Set No Tuner Mode */
        if (stv090x_write_reg(state, STV090x_P1_TNRCFG, 0x6c) < 0)
                goto err;
        if (state->device == STV0900)
                if (stv090x_write_reg(state, STV090x_P2_TNRCFG, 0x6c) < 0)
                        goto err;

        /* I2C repeater OFF */
        STV090x_SETFIELD_Px(reg, ENARPT_LEVEL_FIELD, config->repeater_level);
        if (stv090x_write_reg(state, STV090x_P1_I2CRPT, reg) < 0)
                goto err;
        if (state->device == STV0900)
                if (stv090x_write_reg(state, STV090x_P2_I2CRPT, reg) < 0)
                        goto err;

        if (stv090x_write_reg(state, STV090x_NCOARSE, 0x13) < 0) /* set PLL divider */
                goto err;
        msleep(5);
        if (stv090x_write_reg(state, STV090x_I2CCFG, 0x08) < 0) /* 1/41 oversampling */
                goto err;
        if (stv090x_write_reg(state, STV090x_SYNTCTRL, 0x20 | config->clk_mode) < 0) /* enable PLL */
                goto err;
        msleep(5);

        /* write initval */
        dprintk(FE_DEBUG, 1, "Setting up initial values");
        for (i = 0; i < t1_size; i++) {
                if (stv090x_write_reg(state, stv090x_initval[i].addr, stv090x_initval[i].data) < 0)
                        goto err;
        }

        state->internal->dev_ver = stv090x_read_reg(state, STV090x_MID);
        if (state->internal->dev_ver >= 0x20) {
                if (stv090x_write_reg(state, STV090x_TSGENERAL, 0x0c) < 0)
                        goto err;

                /* write cut20_val*/
                dprintk(FE_DEBUG, 1, "Setting up Cut 2.0 initial values");
                for (i = 0; i < t2_size; i++) {
                        if (stv090x_write_reg(state, stv090x_cut20_val[i].addr, stv090x_cut20_val[i].data) < 0)
                                goto err;
                }

        } else if (state->internal->dev_ver < 0x20) {
                dprintk(FE_ERROR, 1, "ERROR: Unsupported Cut: 0x%02x!",
                        state->internal->dev_ver);

                goto err;
        } else if (state->internal->dev_ver > 0x30) {
                /* we shouldn't bail out from here */
                dprintk(FE_ERROR, 1, "INFO: Cut: 0x%02x probably incomplete support!",
                        state->internal->dev_ver);
        }

        /* ADC1 range */
        reg = stv090x_read_reg(state, STV090x_TSTTNR1);
        STV090x_SETFIELD(reg, ADC1_INMODE_FIELD,
                (config->adc1_range == STV090x_ADC_1Vpp) ? 0 : 1);
        if (stv090x_write_reg(state, STV090x_TSTTNR1, reg) < 0)
                goto err;

        /* ADC2 range */
        reg = stv090x_read_reg(state, STV090x_TSTTNR3);
        STV090x_SETFIELD(reg, ADC2_INMODE_FIELD,
                (config->adc2_range == STV090x_ADC_1Vpp) ? 0 : 1);
        if (stv090x_write_reg(state, STV090x_TSTTNR3, reg) < 0)
                goto err;

        if (stv090x_write_reg(state, STV090x_TSTRES0, 0x80) < 0)
                goto err;
        if (stv090x_write_reg(state, STV090x_TSTRES0, 0x00) < 0)
                goto err;

        return 0;
err:
        dprintk(FE_ERROR, 1, "I/O error");
        return -1;
}

static int stv090x_set_gpio(struct dvb_frontend *fe, u8 gpio, u8 dir,
                            u8 value, u8 xor_value)
{
        struct stv090x_state *state = fe->demodulator_priv;
        u8 reg = 0;

        STV090x_SETFIELD(reg, GPIOx_OPD_FIELD, dir);
        STV090x_SETFIELD(reg, GPIOx_CONFIG_FIELD, value);
        STV090x_SETFIELD(reg, GPIOx_XOR_FIELD, xor_value);

        return stv090x_write_reg(state, STV090x_GPIOxCFG(gpio), reg);
}

static int stv090x_setup_compound(struct stv090x_state *state)
{
        struct stv090x_dev *temp_int;

        temp_int = find_dev(state->i2c,
                            state->config->address);

        if (temp_int && state->demod_mode == STV090x_DUAL) {
                state->internal = temp_int->internal;
                state->internal->num_used++;
                dprintk(FE_INFO, 1, "Found Internal Structure!");
        } else {
                state->internal = kmalloc_obj(*state->internal);
                if (!state->internal)
                        goto error;
                temp_int = append_internal(state->internal);
                if (!temp_int) {
                        kfree(state->internal);
                        goto error;
                }
                state->internal->num_used = 1;
                state->internal->mclk = 0;
                state->internal->dev_ver = 0;
                state->internal->i2c_adap = state->i2c;
                state->internal->i2c_addr = state->config->address;
                dprintk(FE_INFO, 1, "Create New Internal Structure!");

                mutex_init(&state->internal->demod_lock);
                mutex_init(&state->internal->tuner_lock);

                if (stv090x_setup(&state->frontend) < 0) {
                        dprintk(FE_ERROR, 1, "Error setting up device");
                        goto err_remove;
                }
        }

        if (state->internal->dev_ver >= 0x30)
                state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;

        /* workaround for stuck DiSEqC output */
        if (state->config->diseqc_envelope_mode)
                stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);

        state->config->set_gpio = stv090x_set_gpio;

        dprintk(FE_ERROR, 1, "Probing %s demodulator(%d) Cut=0x%02x",
                state->device == STV0900 ? "STV0900" : "STV0903",
                state->config->demod,
                state->internal->dev_ver);

        return 0;

error:
        return -ENOMEM;
err_remove:
        remove_dev(state->internal);
        kfree(state->internal);
        return -ENODEV;
}

static const struct dvb_frontend_ops stv090x_ops = {
        .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS },
        .info = {
                .name                   = "STV090x Multistandard",
                .frequency_min_hz       =  950 * MHz,
                .frequency_max_hz       = 2150 * MHz,
                .symbol_rate_min        = 1000000,
                .symbol_rate_max        = 45000000,
                .caps                   = FE_CAN_INVERSION_AUTO |
                                          FE_CAN_FEC_AUTO       |
                                          FE_CAN_QPSK           |
                                          FE_CAN_2G_MODULATION
        },

        .release                        = stv090x_release,
        .init                           = stv090x_init,

        .sleep                          = stv090x_sleep,
        .get_frontend_algo              = stv090x_frontend_algo,

        .diseqc_send_master_cmd         = stv090x_send_diseqc_msg,
        .diseqc_send_burst              = stv090x_send_diseqc_burst,
        .diseqc_recv_slave_reply        = stv090x_recv_slave_reply,
        .set_tone                       = stv090x_set_tone,

        .search                         = stv090x_search,
        .read_status                    = stv090x_read_status,
        .read_ber                       = stv090x_read_per,
        .read_signal_strength           = stv090x_read_signal_strength,
        .read_snr                       = stv090x_read_cnr,
};

static struct dvb_frontend *stv090x_get_dvb_frontend(struct i2c_client *client)
{
        struct stv090x_state *state = i2c_get_clientdata(client);

        dev_dbg(&client->dev, "\n");

        return &state->frontend;
}

static int stv090x_probe(struct i2c_client *client)
{
        int ret = 0;
        struct stv090x_config *config = client->dev.platform_data;

        struct stv090x_state *state = NULL;

        state = kzalloc_obj(*state);
        if (!state) {
                ret = -ENOMEM;
                goto error;
        }

        state->verbose                          = &verbose;
        state->config                           = config;
        state->i2c                              = client->adapter;
        state->frontend.ops                     = stv090x_ops;
        state->frontend.demodulator_priv        = state;
        state->demod                            = config->demod;
                                                /* Single or Dual mode */
        state->demod_mode                       = config->demod_mode;
        state->device                           = config->device;
                                                /* default */
        state->rolloff                          = STV090x_RO_35;

        ret = stv090x_setup_compound(state);
        if (ret)
                goto error;

        i2c_set_clientdata(client, state);

        /* setup callbacks */
        config->get_dvb_frontend = stv090x_get_dvb_frontend;

        return 0;

error:
        kfree(state);
        return ret;
}

static void stv090x_remove(struct i2c_client *client)
{
        struct stv090x_state *state = i2c_get_clientdata(client);

        stv090x_release(&state->frontend);
}

struct dvb_frontend *stv090x_attach(struct stv090x_config *config,
                                    struct i2c_adapter *i2c,
                                    enum stv090x_demodulator demod)
{
        int ret = 0;
        struct stv090x_state *state = NULL;

        state = kzalloc_obj(*state);
        if (!state)
                goto error;

        state->verbose                          = &verbose;
        state->config                           = config;
        state->i2c                              = i2c;
        state->frontend.ops                     = stv090x_ops;
        state->frontend.demodulator_priv        = state;
        state->demod                            = demod;
                                                /* Single or Dual mode */
        state->demod_mode                       = config->demod_mode;
        state->device                           = config->device;
                                                /* default */
        state->rolloff                          = STV090x_RO_35;

        ret = stv090x_setup_compound(state);
        if (ret)
                goto error;

        return &state->frontend;

error:
        kfree(state);
        return NULL;
}
EXPORT_SYMBOL_GPL(stv090x_attach);

static const struct i2c_device_id stv090x_id_table[] = {
        { "stv090x" },
        {}
};
MODULE_DEVICE_TABLE(i2c, stv090x_id_table);

static struct i2c_driver stv090x_driver = {
        .driver = {
                .name   = "stv090x",
                .suppress_bind_attrs = true,
        },
        .probe          = stv090x_probe,
        .remove         = stv090x_remove,
        .id_table       = stv090x_id_table,
};

module_i2c_driver(stv090x_driver);

MODULE_PARM_DESC(verbose, "Set Verbosity level");
MODULE_AUTHOR("Manu Abraham");
MODULE_DESCRIPTION("STV090x Multi-Std Broadcast frontend");
MODULE_LICENSE("GPL");