/*
 * Linux-DVB Driver for DiBcom's DiB0090 base-band RF Tuner.
 *
 * Copyright (C) 2005-9 DiBcom (http://www.dibcom.fr/)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * This code is more or less generated from another driver, please
 * excuse some codingstyle oddities.
 *
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/mutex.h>

#include "dvb_frontend.h"

#include "dib0090.h"
#include "dibx000_common.h"

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "turn on debugging (default: 0)");

#define dprintk(args...) do { \
        if (debug) { \
                printk(KERN_DEBUG "DiB0090: "); \
                printk(args); \
                printk("\n"); \
        } \
} while (0)

#define CONFIG_SYS_DVBT
#define CONFIG_SYS_ISDBT
#define CONFIG_BAND_CBAND
#define CONFIG_BAND_VHF
#define CONFIG_BAND_UHF
#define CONFIG_DIB0090_USE_PWM_AGC

#define EN_LNA0      0x8000
#define EN_LNA1      0x4000
#define EN_LNA2      0x2000
#define EN_LNA3      0x1000
#define EN_MIX0      0x0800
#define EN_MIX1      0x0400
#define EN_MIX2      0x0200
#define EN_MIX3      0x0100
#define EN_IQADC     0x0040
#define EN_PLL       0x0020
#define EN_TX        0x0010
#define EN_BB        0x0008
#define EN_LO        0x0004
#define EN_BIAS      0x0001

#define EN_IQANA     0x0002
#define EN_DIGCLK    0x0080     /* not in the 0x24 reg, only in 0x1b */
#define EN_CRYSTAL   0x0002

#define EN_UHF           0x22E9
#define EN_VHF           0x44E9
#define EN_LBD           0x11E9
#define EN_SBD           0x44E9
#define EN_CAB           0x88E9

/* Calibration defines */
#define      DC_CAL 0x1
#define     WBD_CAL 0x2
#define    TEMP_CAL 0x4
#define CAPTRIM_CAL 0x8

#define KROSUS_PLL_LOCKED   0x800
#define KROSUS              0x2

/* Use those defines to identify SOC version */
#define SOC               0x02
#define SOC_7090_P1G_11R1 0x82
#define SOC_7090_P1G_21R1 0x8a
#define SOC_8090_P1G_11R1 0x86
#define SOC_8090_P1G_21R1 0x8e

/* else use thos ones to check */
#define P1A_B      0x0
#define P1C        0x1
#define P1D_E_F    0x3
#define P1G        0x7
#define P1G_21R2   0xf

#define MP001 0x1               /* Single 9090/8096 */
#define MP005 0x4               /* Single Sband */
#define MP008 0x6               /* Dual diversity VHF-UHF-LBAND */
#define MP009 0x7               /* Dual diversity 29098 CBAND-UHF-LBAND-SBAND */

#define pgm_read_word(w) (*w)

struct dc_calibration;

struct dib0090_tuning {
        u32 max_freq;           /* for every frequency less than or equal to that field: this information is correct */
        u8 switch_trim;
        u8 lna_tune;
        u16 lna_bias;
        u16 v2i;
        u16 mix;
        u16 load;
        u16 tuner_enable;
};

struct dib0090_pll {
        u32 max_freq;           /* for every frequency less than or equal to that field: this information is correct */
        u8 vco_band;
        u8 hfdiv_code;
        u8 hfdiv;
        u8 topresc;
};

struct dib0090_identity {
        u8 version;
        u8 product;
        u8 p1g;
        u8 in_soc;
};

struct dib0090_state {
        struct i2c_adapter *i2c;
        struct dvb_frontend *fe;
        const struct dib0090_config *config;

        u8 current_band;
        enum frontend_tune_state tune_state;
        u32 current_rf;

        u16 wbd_offset;
        s16 wbd_target;         /* in dB */

        s16 rf_gain_limit;      /* take-over-point: where to split between bb and rf gain */
        s16 current_gain;       /* keeps the currently programmed gain */
        u8 agc_step;            /* new binary search */

        u16 gain[2];            /* for channel monitoring */

        const u16 *rf_ramp;
        const u16 *bb_ramp;

        /* for the software AGC ramps */
        u16 bb_1_def;
        u16 rf_lt_def;
        u16 gain_reg[4];

        /* for the captrim/dc-offset search */
        s8 step;
        s16 adc_diff;
        s16 min_adc_diff;

        s8 captrim;
        s8 fcaptrim;

        const struct dc_calibration *dc;
        u16 bb6, bb7;

        const struct dib0090_tuning *current_tune_table_index;
        const struct dib0090_pll *current_pll_table_index;

        u8 tuner_is_tuned;
        u8 agc_freeze;

        struct dib0090_identity identity;

        u32 rf_request;
        u8 current_standard;

        u8 calibrate;
        u32 rest;
        u16 bias;
        s16 temperature;

        u8 wbd_calibration_gain;
        const struct dib0090_wbd_slope *current_wbd_table;
        u16 wbdmux;

        /* for the I2C transfer */
        struct i2c_msg msg[2];
        u8 i2c_write_buffer[3];
        u8 i2c_read_buffer[2];
        struct mutex i2c_buffer_lock;
};

struct dib0090_fw_state {
        struct i2c_adapter *i2c;
        struct dvb_frontend *fe;
        struct dib0090_identity identity;
        const struct dib0090_config *config;

        /* for the I2C transfer */
        struct i2c_msg msg;
        u8 i2c_write_buffer[2];
        u8 i2c_read_buffer[2];
        struct mutex i2c_buffer_lock;
};

static u16 dib0090_read_reg(struct dib0090_state *state, u8 reg)
{
        u16 ret;

        if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
                dprintk("could not acquire lock");
                return 0;
        }

        state->i2c_write_buffer[0] = reg;

        memset(state->msg, 0, 2 * sizeof(struct i2c_msg));
        state->msg[0].addr = state->config->i2c_address;
        state->msg[0].flags = 0;
        state->msg[0].buf = state->i2c_write_buffer;
        state->msg[0].len = 1;
        state->msg[1].addr = state->config->i2c_address;
        state->msg[1].flags = I2C_M_RD;
        state->msg[1].buf = state->i2c_read_buffer;
        state->msg[1].len = 2;

        if (i2c_transfer(state->i2c, state->msg, 2) != 2) {
                printk(KERN_WARNING "DiB0090 I2C read failed\n");
                ret = 0;
        } else
                ret = (state->i2c_read_buffer[0] << 8)
                        | state->i2c_read_buffer[1];

        mutex_unlock(&state->i2c_buffer_lock);
        return ret;
}

static int dib0090_write_reg(struct dib0090_state *state, u32 reg, u16 val)
{
        int ret;

        if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
                dprintk("could not acquire lock");
                return -EINVAL;
        }

        state->i2c_write_buffer[0] = reg & 0xff;
        state->i2c_write_buffer[1] = val >> 8;
        state->i2c_write_buffer[2] = val & 0xff;

        memset(state->msg, 0, sizeof(struct i2c_msg));
        state->msg[0].addr = state->config->i2c_address;
        state->msg[0].flags = 0;
        state->msg[0].buf = state->i2c_write_buffer;
        state->msg[0].len = 3;

        if (i2c_transfer(state->i2c, state->msg, 1) != 1) {
                printk(KERN_WARNING "DiB0090 I2C write failed\n");
                ret = -EREMOTEIO;
        } else
                ret = 0;

        mutex_unlock(&state->i2c_buffer_lock);
        return ret;
}

static u16 dib0090_fw_read_reg(struct dib0090_fw_state *state, u8 reg)
{
        u16 ret;

        if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
                dprintk("could not acquire lock");
                return 0;
        }

        state->i2c_write_buffer[0] = reg;

        memset(&state->msg, 0, sizeof(struct i2c_msg));
        state->msg.addr = reg;
        state->msg.flags = I2C_M_RD;
        state->msg.buf = state->i2c_read_buffer;
        state->msg.len = 2;
        if (i2c_transfer(state->i2c, &state->msg, 1) != 1) {
                printk(KERN_WARNING "DiB0090 I2C read failed\n");
                ret = 0;
        } else
                ret = (state->i2c_read_buffer[0] << 8)
                        | state->i2c_read_buffer[1];

        mutex_unlock(&state->i2c_buffer_lock);
        return ret;
}

static int dib0090_fw_write_reg(struct dib0090_fw_state *state, u8 reg, u16 val)
{
        int ret;

        if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
                dprintk("could not acquire lock");
                return -EINVAL;
        }

        state->i2c_write_buffer[0] = val >> 8;
        state->i2c_write_buffer[1] = val & 0xff;

        memset(&state->msg, 0, sizeof(struct i2c_msg));
        state->msg.addr = reg;
        state->msg.flags = 0;
        state->msg.buf = state->i2c_write_buffer;
        state->msg.len = 2;
        if (i2c_transfer(state->i2c, &state->msg, 1) != 1) {
                printk(KERN_WARNING "DiB0090 I2C write failed\n");
                ret = -EREMOTEIO;
        } else
                ret = 0;

        mutex_unlock(&state->i2c_buffer_lock);
        return ret;
}

#define HARD_RESET(state) do {  if (cfg->reset) {  if (cfg->sleep) cfg->sleep(fe, 0); msleep(10);  cfg->reset(fe, 1); msleep(10);  cfg->reset(fe, 0); msleep(10);  }  } while (0)
#define ADC_TARGET -220
#define GAIN_ALPHA 5
#define WBD_ALPHA 6
#define LPF     100
static void dib0090_write_regs(struct dib0090_state *state, u8 r, const u16 * b, u8 c)
{
        do {
                dib0090_write_reg(state, r++, *b++);
        } while (--c);
}

static int dib0090_identify(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;
        u16 v;
        struct dib0090_identity *identity = &state->identity;

        v = dib0090_read_reg(state, 0x1a);

        identity->p1g = 0;
        identity->in_soc = 0;

        dprintk("Tuner identification (Version = 0x%04x)", v);

        /* without PLL lock info */
        v &= ~KROSUS_PLL_LOCKED;

        identity->version = v & 0xff;
        identity->product = (v >> 8) & 0xf;

        if (identity->product != KROSUS)
                goto identification_error;

        if ((identity->version & 0x3) == SOC) {
                identity->in_soc = 1;
                switch (identity->version) {
                case SOC_8090_P1G_11R1:
                        dprintk("SOC 8090 P1-G11R1 Has been detected");
                        identity->p1g = 1;
                        break;
                case SOC_8090_P1G_21R1:
                        dprintk("SOC 8090 P1-G21R1 Has been detected");
                        identity->p1g = 1;
                        break;
                case SOC_7090_P1G_11R1:
                        dprintk("SOC 7090 P1-G11R1 Has been detected");
                        identity->p1g = 1;
                        break;
                case SOC_7090_P1G_21R1:
                        dprintk("SOC 7090 P1-G21R1 Has been detected");
                        identity->p1g = 1;
                        break;
                default:
                        goto identification_error;
                }
        } else {
                switch ((identity->version >> 5) & 0x7) {
                case MP001:
                        dprintk("MP001 : 9090/8096");
                        break;
                case MP005:
                        dprintk("MP005 : Single Sband");
                        break;
                case MP008:
                        dprintk("MP008 : diversity VHF-UHF-LBAND");
                        break;
                case MP009:
                        dprintk("MP009 : diversity 29098 CBAND-UHF-LBAND-SBAND");
                        break;
                default:
                        goto identification_error;
                }

                switch (identity->version & 0x1f) {
                case P1G_21R2:
                        dprintk("P1G_21R2 detected");
                        identity->p1g = 1;
                        break;
                case P1G:
                        dprintk("P1G detected");
                        identity->p1g = 1;
                        break;
                case P1D_E_F:
                        dprintk("P1D/E/F detected");
                        break;
                case P1C:
                        dprintk("P1C detected");
                        break;
                case P1A_B:
                        dprintk("P1-A/B detected: driver is deactivated - not available");
                        goto identification_error;
                        break;
                default:
                        goto identification_error;
                }
        }

        return 0;

identification_error:
        return -EIO;
}

static int dib0090_fw_identify(struct dvb_frontend *fe)
{
        struct dib0090_fw_state *state = fe->tuner_priv;
        struct dib0090_identity *identity = &state->identity;

        u16 v = dib0090_fw_read_reg(state, 0x1a);
        identity->p1g = 0;
        identity->in_soc = 0;

        dprintk("FE: Tuner identification (Version = 0x%04x)", v);

        /* without PLL lock info */
        v &= ~KROSUS_PLL_LOCKED;

        identity->version = v & 0xff;
        identity->product = (v >> 8) & 0xf;

        if (identity->product != KROSUS)
                goto identification_error;

        if ((identity->version & 0x3) == SOC) {
                identity->in_soc = 1;
                switch (identity->version) {
                case SOC_8090_P1G_11R1:
                        dprintk("SOC 8090 P1-G11R1 Has been detected");
                        identity->p1g = 1;
                        break;
                case SOC_8090_P1G_21R1:
                        dprintk("SOC 8090 P1-G21R1 Has been detected");
                        identity->p1g = 1;
                        break;
                case SOC_7090_P1G_11R1:
                        dprintk("SOC 7090 P1-G11R1 Has been detected");
                        identity->p1g = 1;
                        break;
                case SOC_7090_P1G_21R1:
                        dprintk("SOC 7090 P1-G21R1 Has been detected");
                        identity->p1g = 1;
                        break;
                default:
                        goto identification_error;
                }
        } else {
                switch ((identity->version >> 5) & 0x7) {
                case MP001:
                        dprintk("MP001 : 9090/8096");
                        break;
                case MP005:
                        dprintk("MP005 : Single Sband");
                        break;
                case MP008:
                        dprintk("MP008 : diversity VHF-UHF-LBAND");
                        break;
                case MP009:
                        dprintk("MP009 : diversity 29098 CBAND-UHF-LBAND-SBAND");
                        break;
                default:
                        goto identification_error;
                }

                switch (identity->version & 0x1f) {
                case P1G_21R2:
                        dprintk("P1G_21R2 detected");
                        identity->p1g = 1;
                        break;
                case P1G:
                        dprintk("P1G detected");
                        identity->p1g = 1;
                        break;
                case P1D_E_F:
                        dprintk("P1D/E/F detected");
                        break;
                case P1C:
                        dprintk("P1C detected");
                        break;
                case P1A_B:
                        dprintk("P1-A/B detected: driver is deactivated - not available");
                        goto identification_error;
                        break;
                default:
                        goto identification_error;
                }
        }

        return 0;

identification_error:
        return -EIO;;
}

static void dib0090_reset_digital(struct dvb_frontend *fe, const struct dib0090_config *cfg)
{
        struct dib0090_state *state = fe->tuner_priv;
        u16 PllCfg, i, v;

        HARD_RESET(state);

        dib0090_write_reg(state, 0x24, EN_PLL | EN_CRYSTAL);
        dib0090_write_reg(state, 0x1b, EN_DIGCLK | EN_PLL | EN_CRYSTAL);        /* PLL, DIG_CLK and CRYSTAL remain */

        if (!cfg->in_soc) {
                /* adcClkOutRatio=8->7, release reset */
                dib0090_write_reg(state, 0x20, ((cfg->io.adc_clock_ratio - 1) << 11) | (0 << 10) | (1 << 9) | (1 << 8) | (0 << 4) | 0);
                if (cfg->clkoutdrive != 0)
                        dib0090_write_reg(state, 0x23, (0 << 15) | ((!cfg->analog_output) << 14) | (2 << 10) | (1 << 9) | (0 << 8)
                                          | (cfg->clkoutdrive << 5) | (cfg->clkouttobamse << 4) | (0 << 2) | (0));
                else
                        dib0090_write_reg(state, 0x23, (0 << 15) | ((!cfg->analog_output) << 14) | (2 << 10) | (1 << 9) | (0 << 8)
                                          | (7 << 5) | (cfg->clkouttobamse << 4) | (0 << 2) | (0));
        }

        /* Read Pll current config * */
        PllCfg = dib0090_read_reg(state, 0x21);

        /** Reconfigure PLL if current setting is different from default setting **/
        if ((PllCfg & 0x1FFF) != ((cfg->io.pll_range << 12) | (cfg->io.pll_loopdiv << 6) | (cfg->io.pll_prediv)) && (!cfg->in_soc)
                        && !cfg->io.pll_bypass) {

                /* Set Bypass mode */
                PllCfg |= (1 << 15);
                dib0090_write_reg(state, 0x21, PllCfg);

                /* Set Reset Pll */
                PllCfg &= ~(1 << 13);
                dib0090_write_reg(state, 0x21, PllCfg);

        /*** Set new Pll configuration in bypass and reset state ***/
                PllCfg = (1 << 15) | (0 << 13) | (cfg->io.pll_range << 12) | (cfg->io.pll_loopdiv << 6) | (cfg->io.pll_prediv);
                dib0090_write_reg(state, 0x21, PllCfg);

                /* Remove Reset Pll */
                PllCfg |= (1 << 13);
                dib0090_write_reg(state, 0x21, PllCfg);

        /*** Wait for PLL lock ***/
                i = 100;
                do {
                        v = !!(dib0090_read_reg(state, 0x1a) & 0x800);
                        if (v)
                                break;
                } while (--i);

                if (i == 0) {
                        dprintk("Pll: Unable to lock Pll");
                        return;
                }

                /* Finally Remove Bypass mode */
                PllCfg &= ~(1 << 15);
                dib0090_write_reg(state, 0x21, PllCfg);
        }

        if (cfg->io.pll_bypass) {
                PllCfg |= (cfg->io.pll_bypass << 15);
                dib0090_write_reg(state, 0x21, PllCfg);
        }
}

static int dib0090_fw_reset_digital(struct dvb_frontend *fe, const struct dib0090_config *cfg)
{
        struct dib0090_fw_state *state = fe->tuner_priv;
        u16 PllCfg;
        u16 v;
        int i;

        dprintk("fw reset digital");
        HARD_RESET(state);

        dib0090_fw_write_reg(state, 0x24, EN_PLL | EN_CRYSTAL);
        dib0090_fw_write_reg(state, 0x1b, EN_DIGCLK | EN_PLL | EN_CRYSTAL);     /* PLL, DIG_CLK and CRYSTAL remain */

        dib0090_fw_write_reg(state, 0x20,
                        ((cfg->io.adc_clock_ratio - 1) << 11) | (0 << 10) | (1 << 9) | (1 << 8) | (cfg->data_tx_drv << 4) | cfg->ls_cfg_pad_drv);

        v = (0 << 15) | ((!cfg->analog_output) << 14) | (1 << 9) | (0 << 8) | (cfg->clkouttobamse << 4) | (0 << 2) | (0);
        if (cfg->clkoutdrive != 0)
                v |= cfg->clkoutdrive << 5;
        else
                v |= 7 << 5;

        v |= 2 << 10;
        dib0090_fw_write_reg(state, 0x23, v);

        /* Read Pll current config * */
        PllCfg = dib0090_fw_read_reg(state, 0x21);

        /** Reconfigure PLL if current setting is different from default setting **/
        if ((PllCfg & 0x1FFF) != ((cfg->io.pll_range << 12) | (cfg->io.pll_loopdiv << 6) | (cfg->io.pll_prediv)) && !cfg->io.pll_bypass) {

                /* Set Bypass mode */
                PllCfg |= (1 << 15);
                dib0090_fw_write_reg(state, 0x21, PllCfg);

                /* Set Reset Pll */
                PllCfg &= ~(1 << 13);
                dib0090_fw_write_reg(state, 0x21, PllCfg);

        /*** Set new Pll configuration in bypass and reset state ***/
                PllCfg = (1 << 15) | (0 << 13) | (cfg->io.pll_range << 12) | (cfg->io.pll_loopdiv << 6) | (cfg->io.pll_prediv);
                dib0090_fw_write_reg(state, 0x21, PllCfg);

                /* Remove Reset Pll */
                PllCfg |= (1 << 13);
                dib0090_fw_write_reg(state, 0x21, PllCfg);

        /*** Wait for PLL lock ***/
                i = 100;
                do {
                        v = !!(dib0090_fw_read_reg(state, 0x1a) & 0x800);
                        if (v)
                                break;
                } while (--i);

                if (i == 0) {
                        dprintk("Pll: Unable to lock Pll");
                        return -EIO;
                }

                /* Finally Remove Bypass mode */
                PllCfg &= ~(1 << 15);
                dib0090_fw_write_reg(state, 0x21, PllCfg);
        }

        if (cfg->io.pll_bypass) {
                PllCfg |= (cfg->io.pll_bypass << 15);
                dib0090_fw_write_reg(state, 0x21, PllCfg);
        }

        return dib0090_fw_identify(fe);
}

static int dib0090_wakeup(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;
        if (state->config->sleep)
                state->config->sleep(fe, 0);

        /* enable dataTX in case we have been restarted in the wrong moment */
        dib0090_write_reg(state, 0x23, dib0090_read_reg(state, 0x23) | (1 << 14));
        return 0;
}

static int dib0090_sleep(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;
        if (state->config->sleep)
                state->config->sleep(fe, 1);
        return 0;
}

void dib0090_dcc_freq(struct dvb_frontend *fe, u8 fast)
{
        struct dib0090_state *state = fe->tuner_priv;
        if (fast)
                dib0090_write_reg(state, 0x04, 0);
        else
                dib0090_write_reg(state, 0x04, 1);
}

EXPORT_SYMBOL(dib0090_dcc_freq);

static const u16 bb_ramp_pwm_normal_socs[] = {
        550,                    /* max BB gain in 10th of dB */
        (1 << 9) | 8,           /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> BB_RAMP2 */
        440,
        (4 << 9) | 0,           /* BB_RAMP3 = 26dB */
        (0 << 9) | 208,         /* BB_RAMP4 */
        (4 << 9) | 208,         /* BB_RAMP5 = 29dB */
        (0 << 9) | 440,         /* BB_RAMP6 */
};

static const u16 rf_ramp_pwm_cband_7090[] = {
        280,                    /* max RF gain in 10th of dB */
        18,                     /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> RF_RAMP2 */
        504,                    /* ramp_max = maximum X used on the ramp */
        (29 << 10) | 364,       /* RF_RAMP5, LNA 1 = 8dB */
        (0 << 10) | 504,        /* RF_RAMP6, LNA 1 */
        (60 << 10) | 228,       /* RF_RAMP7, LNA 2 = 7.7dB */
        (0 << 10) | 364,        /* RF_RAMP8, LNA 2 */
        (34 << 10) | 109,       /* GAIN_4_1, LNA 3 = 6.8dB */
        (0 << 10) | 228,        /* GAIN_4_2, LNA 3 */
        (37 << 10) | 0,         /* RF_RAMP3, LNA 4 = 6.2dB */
        (0 << 10) | 109,        /* RF_RAMP4, LNA 4 */
};

static const u16 rf_ramp_pwm_cband_8090[] = {
        345,                    /* max RF gain in 10th of dB */
        29,                     /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> RF_RAMP2 */
        1000,                   /* ramp_max = maximum X used on the ramp */
        (35 << 10) | 772,       /* RF_RAMP3, LNA 1 = 8dB */
        (0 << 10) | 1000,       /* RF_RAMP4, LNA 1 */
        (58 << 10) | 496,       /* RF_RAMP5, LNA 2 = 9.5dB */
        (0 << 10) | 772,        /* RF_RAMP6, LNA 2 */
        (27 << 10) | 200,       /* RF_RAMP7, LNA 3 = 10.5dB */
        (0 << 10) | 496,        /* RF_RAMP8, LNA 3 */
        (40 << 10) | 0,         /* GAIN_4_1, LNA 4 = 7dB */
        (0 << 10) | 200,        /* GAIN_4_2, LNA 4 */
};

static const u16 rf_ramp_pwm_uhf_7090[] = {
        407,                    /* max RF gain in 10th of dB */
        13,                     /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> RF_RAMP2 */
        529,                    /* ramp_max = maximum X used on the ramp */
        (23 << 10) | 0,         /* RF_RAMP3, LNA 1 = 14.7dB */
        (0 << 10) | 176,        /* RF_RAMP4, LNA 1 */
        (63 << 10) | 400,       /* RF_RAMP5, LNA 2 = 8dB */
        (0 << 10) | 529,        /* RF_RAMP6, LNA 2 */
        (48 << 10) | 316,       /* RF_RAMP7, LNA 3 = 6.8dB */
        (0 << 10) | 400,        /* RF_RAMP8, LNA 3 */
        (29 << 10) | 176,       /* GAIN_4_1, LNA 4 = 11.5dB */
        (0 << 10) | 316,        /* GAIN_4_2, LNA 4 */
};

static const u16 rf_ramp_pwm_uhf_8090[] = {
        388,                    /* max RF gain in 10th of dB */
        26,                     /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> RF_RAMP2 */
        1008,                   /* ramp_max = maximum X used on the ramp */
        (11 << 10) | 0,         /* RF_RAMP3, LNA 1 = 14.7dB */
        (0 << 10) | 369,        /* RF_RAMP4, LNA 1 */
        (41 << 10) | 809,       /* RF_RAMP5, LNA 2 = 8dB */
        (0 << 10) | 1008,       /* RF_RAMP6, LNA 2 */
        (27 << 10) | 659,       /* RF_RAMP7, LNA 3 = 6dB */
        (0 << 10) | 809,        /* RF_RAMP8, LNA 3 */
        (14 << 10) | 369,       /* GAIN_4_1, LNA 4 = 11.5dB */
        (0 << 10) | 659,        /* GAIN_4_2, LNA 4 */
};

static const u16 rf_ramp_pwm_cband[] = {
        0,                      /* max RF gain in 10th of dB */
        0,                      /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> 0x2b */
        0,                      /* ramp_max = maximum X used on the ramp */
        (0 << 10) | 0,          /* 0x2c, LNA 1 = 0dB */
        (0 << 10) | 0,          /* 0x2d, LNA 1 */
        (0 << 10) | 0,          /* 0x2e, LNA 2 = 0dB */
        (0 << 10) | 0,          /* 0x2f, LNA 2 */
        (0 << 10) | 0,          /* 0x30, LNA 3 = 0dB */
        (0 << 10) | 0,          /* 0x31, LNA 3 */
        (0 << 10) | 0,          /* GAIN_4_1, LNA 4 = 0dB */
        (0 << 10) | 0,          /* GAIN_4_2, LNA 4 */
};

static const u16 rf_ramp_vhf[] = {
        412,                    /* max RF gain in 10th of dB */
        132, 307, 127,          /* LNA1,  13.2dB */
        105, 412, 255,          /* LNA2,  10.5dB */
        50, 50, 127,            /* LNA3,  5dB */
        125, 175, 127,          /* LNA4,  12.5dB */
        0, 0, 127,              /* CBAND, 0dB */
};

static const u16 rf_ramp_uhf[] = {
        412,                    /* max RF gain in 10th of dB */
        132, 307, 127,          /* LNA1  : total gain = 13.2dB, point on the ramp where this amp is full gain, value to write to get full gain */
        105, 412, 255,          /* LNA2  : 10.5 dB */
        50, 50, 127,            /* LNA3  :  5.0 dB */
        125, 175, 127,          /* LNA4  : 12.5 dB */
        0, 0, 127,              /* CBAND :  0.0 dB */
};

static const u16 rf_ramp_cband_broadmatching[] =        /* for p1G only */
{
        314,                    /* Calibrated at 200MHz order has been changed g4-g3-g2-g1 */
        84, 314, 127,           /* LNA1 */
        80, 230, 255,           /* LNA2 */
        80, 150, 127,           /* LNA3  It was measured 12dB, do not lock if 120 */
        70, 70, 127,            /* LNA4 */
        0, 0, 127,              /* CBAND */
};

static const u16 rf_ramp_cband[] = {
        332,                    /* max RF gain in 10th of dB */
        132, 252, 127,          /* LNA1,  dB */
        80, 332, 255,           /* LNA2,  dB */
        0, 0, 127,              /* LNA3,  dB */
        0, 0, 127,              /* LNA4,  dB */
        120, 120, 127,          /* LT1 CBAND */
};

static const u16 rf_ramp_pwm_vhf[] = {
        404,                    /* max RF gain in 10th of dB */
        25,                     /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> 0x2b */
        1011,                   /* ramp_max = maximum X used on the ramp */
        (6 << 10) | 417,        /* 0x2c, LNA 1 = 13.2dB */
        (0 << 10) | 756,        /* 0x2d, LNA 1 */
        (16 << 10) | 756,       /* 0x2e, LNA 2 = 10.5dB */
        (0 << 10) | 1011,       /* 0x2f, LNA 2 */
        (16 << 10) | 290,       /* 0x30, LNA 3 = 5dB */
        (0 << 10) | 417,        /* 0x31, LNA 3 */
        (7 << 10) | 0,          /* GAIN_4_1, LNA 4 = 12.5dB */
        (0 << 10) | 290,        /* GAIN_4_2, LNA 4 */
};

static const u16 rf_ramp_pwm_uhf[] = {
        404,                    /* max RF gain in 10th of dB */
        25,                     /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> 0x2b */
        1011,                   /* ramp_max = maximum X used on the ramp */
        (6 << 10) | 417,        /* 0x2c, LNA 1 = 13.2dB */
        (0 << 10) | 756,        /* 0x2d, LNA 1 */
        (16 << 10) | 756,       /* 0x2e, LNA 2 = 10.5dB */
        (0 << 10) | 1011,       /* 0x2f, LNA 2 */
        (16 << 10) | 0,         /* 0x30, LNA 3 = 5dB */
        (0 << 10) | 127,        /* 0x31, LNA 3 */
        (7 << 10) | 127,        /* GAIN_4_1, LNA 4 = 12.5dB */
        (0 << 10) | 417,        /* GAIN_4_2, LNA 4 */
};

static const u16 bb_ramp_boost[] = {
        550,                    /* max BB gain in 10th of dB */
        260, 260, 26,           /* BB1, 26dB */
        290, 550, 29,           /* BB2, 29dB */
};

static const u16 bb_ramp_pwm_normal[] = {
        500,                    /* max RF gain in 10th of dB */
        8,                      /* ramp_slope = 1dB of gain -> clock_ticks_per_db = clk_khz / ramp_slope -> 0x34 */
        400,
        (2 << 9) | 0,           /* 0x35 = 21dB */
        (0 << 9) | 168,         /* 0x36 */
        (2 << 9) | 168,         /* 0x37 = 29dB */
        (0 << 9) | 400,         /* 0x38 */
};

struct slope {
        s16 range;
        s16 slope;
};
static u16 slopes_to_scale(const struct slope *slopes, u8 num, s16 val)
{
        u8 i;
        u16 rest;
        u16 ret = 0;
        for (i = 0; i < num; i++) {
                if (val > slopes[i].range)
                        rest = slopes[i].range;
                else
                        rest = val;
                ret += (rest * slopes[i].slope) / slopes[i].range;
                val -= rest;
        }
        return ret;
}

static const struct slope dib0090_wbd_slopes[3] = {
        {66, 120},              /* -64,-52: offset -   65 */
        {600, 170},             /* -52,-35: 65     -  665 */
        {170, 250},             /* -45,-10: 665    - 835 */
};

static s16 dib0090_wbd_to_db(struct dib0090_state *state, u16 wbd)
{
        wbd &= 0x3ff;
        if (wbd < state->wbd_offset)
                wbd = 0;
        else
                wbd -= state->wbd_offset;
        /* -64dB is the floor */
        return -640 + (s16) slopes_to_scale(dib0090_wbd_slopes, ARRAY_SIZE(dib0090_wbd_slopes), wbd);
}

static void dib0090_wbd_target(struct dib0090_state *state, u32 rf)
{
        u16 offset = 250;

        /* TODO : DAB digital N+/-1 interferer perfs : offset = 10 */

        if (state->current_band == BAND_VHF)
                offset = 650;
#ifndef FIRMWARE_FIREFLY
        if (state->current_band == BAND_VHF)
                offset = state->config->wbd_vhf_offset;
        if (state->current_band == BAND_CBAND)
                offset = state->config->wbd_cband_offset;
#endif

        state->wbd_target = dib0090_wbd_to_db(state, state->wbd_offset + offset);
        dprintk("wbd-target: %d dB", (u32) state->wbd_target);
}

static const int gain_reg_addr[4] = {
        0x08, 0x0a, 0x0f, 0x01
};

static void dib0090_gain_apply(struct dib0090_state *state, s16 gain_delta, s16 top_delta, u8 force)
{
        u16 rf, bb, ref;
        u16 i, v, gain_reg[4] = { 0 }, gain;
        const u16 *g;

        if (top_delta < -511)
                top_delta = -511;
        if (top_delta > 511)
                top_delta = 511;

        if (force) {
                top_delta *= (1 << WBD_ALPHA);
                gain_delta *= (1 << GAIN_ALPHA);
        }

        if (top_delta >= ((s16) (state->rf_ramp[0] << WBD_ALPHA) - state->rf_gain_limit))       /* overflow */
                state->rf_gain_limit = state->rf_ramp[0] << WBD_ALPHA;
        else
                state->rf_gain_limit += top_delta;

        if (state->rf_gain_limit < 0)   /*underflow */
                state->rf_gain_limit = 0;

        /* use gain as a temporary variable and correct current_gain */
        gain = ((state->rf_gain_limit >> WBD_ALPHA) + state->bb_ramp[0]) << GAIN_ALPHA;
        if (gain_delta >= ((s16) gain - state->current_gain))   /* overflow */
                state->current_gain = gain;
        else
                state->current_gain += gain_delta;
        /* cannot be less than 0 (only if gain_delta is less than 0 we can have current_gain < 0) */
        if (state->current_gain < 0)
                state->current_gain = 0;

        /* now split total gain to rf and bb gain */
        gain = state->current_gain >> GAIN_ALPHA;

        /* requested gain is bigger than rf gain limit - ACI/WBD adjustment */
        if (gain > (state->rf_gain_limit >> WBD_ALPHA)) {
                rf = state->rf_gain_limit >> WBD_ALPHA;
                bb = gain - rf;
                if (bb > state->bb_ramp[0])
                        bb = state->bb_ramp[0];
        } else {                /* high signal level -> all gains put on RF */
                rf = gain;
                bb = 0;
        }

        state->gain[0] = rf;
        state->gain[1] = bb;

        /* software ramp */
        /* Start with RF gains */
        g = state->rf_ramp + 1; /* point on RF LNA1 max gain */
        ref = rf;
        for (i = 0; i < 7; i++) {       /* Go over all amplifiers => 5RF amps + 2 BB amps = 7 amps */
                if (g[0] == 0 || ref < (g[1] - g[0]))   /* if total gain of the current amp is null or this amp is not concerned because it starts to work from an higher gain value */
                        v = 0;  /* force the gain to write for the current amp to be null */
                else if (ref >= g[1])   /* Gain to set is higher than the high working point of this amp */
                        v = g[2];       /* force this amp to be full gain */
                else            /* compute the value to set to this amp because we are somewhere in his range */
                        v = ((ref - (g[1] - g[0])) * g[2]) / g[0];

                if (i == 0)     /* LNA 1 reg mapping */
                        gain_reg[0] = v;
                else if (i == 1)        /* LNA 2 reg mapping */
                        gain_reg[0] |= v << 7;
                else if (i == 2)        /* LNA 3 reg mapping */
                        gain_reg[1] = v;
                else if (i == 3)        /* LNA 4 reg mapping */
                        gain_reg[1] |= v << 7;
                else if (i == 4)        /* CBAND LNA reg mapping */
                        gain_reg[2] = v | state->rf_lt_def;
                else if (i == 5)        /* BB gain 1 reg mapping */
                        gain_reg[3] = v << 3;
                else if (i == 6)        /* BB gain 2 reg mapping */
                        gain_reg[3] |= v << 8;

                g += 3;         /* go to next gain bloc */

                /* When RF is finished, start with BB */
                if (i == 4) {
                        g = state->bb_ramp + 1; /* point on BB gain 1 max gain */
                        ref = bb;

                }
        }
        gain_reg[3] |= state->bb_1_def;
        gain_reg[3] |= ((bb % 10) * 100) / 125;

#ifdef DEBUG_AGC
        dprintk("GA CALC: DB: %3d(rf) + %3d(bb) = %3d gain_reg[0]=%04x gain_reg[1]=%04x gain_reg[2]=%04x gain_reg[0]=%04x", rf, bb, rf + bb,
                gain_reg[0], gain_reg[1], gain_reg[2], gain_reg[3]);
#endif

        /* Write the amplifier regs */
        for (i = 0; i < 4; i++) {
                v = gain_reg[i];
                if (force || state->gain_reg[i] != v) {
                        state->gain_reg[i] = v;
                        dib0090_write_reg(state, gain_reg_addr[i], v);
                }
        }
}

static void dib0090_set_boost(struct dib0090_state *state, int onoff)
{
        state->bb_1_def &= 0xdfff;
        state->bb_1_def |= onoff << 13;
}

static void dib0090_set_rframp(struct dib0090_state *state, const u16 * cfg)
{
        state->rf_ramp = cfg;
}

static void dib0090_set_rframp_pwm(struct dib0090_state *state, const u16 * cfg)
{
        state->rf_ramp = cfg;

        dib0090_write_reg(state, 0x2a, 0xffff);

        dprintk("total RF gain: %ddB, step: %d", (u32) cfg[0], dib0090_read_reg(state, 0x2a));

        dib0090_write_regs(state, 0x2c, cfg + 3, 6);
        dib0090_write_regs(state, 0x3e, cfg + 9, 2);
}

static void dib0090_set_bbramp(struct dib0090_state *state, const u16 * cfg)
{
        state->bb_ramp = cfg;
        dib0090_set_boost(state, cfg[0] > 500); /* we want the boost if the gain is higher that 50dB */
}

static void dib0090_set_bbramp_pwm(struct dib0090_state *state, const u16 * cfg)
{
        state->bb_ramp = cfg;

        dib0090_set_boost(state, cfg[0] > 500); /* we want the boost if the gain is higher that 50dB */

        dib0090_write_reg(state, 0x33, 0xffff);
        dprintk("total BB gain: %ddB, step: %d", (u32) cfg[0], dib0090_read_reg(state, 0x33));
        dib0090_write_regs(state, 0x35, cfg + 3, 4);
}

void dib0090_pwm_gain_reset(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;
        /* reset the AGC */

        if (state->config->use_pwm_agc) {
#ifdef CONFIG_BAND_SBAND
                if (state->current_band == BAND_SBAND) {
                        dib0090_set_rframp_pwm(state, rf_ramp_pwm_sband);
                        dib0090_set_bbramp_pwm(state, bb_ramp_pwm_boost);
                } else
#endif
#ifdef CONFIG_BAND_CBAND
                if (state->current_band == BAND_CBAND) {
                        if (state->identity.in_soc) {
                                dib0090_set_bbramp_pwm(state, bb_ramp_pwm_normal_socs);
                                if (state->identity.version == SOC_8090_P1G_11R1 || state->identity.version == SOC_8090_P1G_21R1)
                                        dib0090_set_rframp_pwm(state, rf_ramp_pwm_cband_8090);
                                else if (state->identity.version == SOC_7090_P1G_11R1 || state->identity.version == SOC_7090_P1G_21R1)
                                        dib0090_set_rframp_pwm(state, rf_ramp_pwm_cband_7090);
                        } else {
                                dib0090_set_rframp_pwm(state, rf_ramp_pwm_cband);
                                dib0090_set_bbramp_pwm(state, bb_ramp_pwm_normal);
                        }
                } else
#endif
#ifdef CONFIG_BAND_VHF
                if (state->current_band == BAND_VHF) {
                        if (state->identity.in_soc) {
                                dib0090_set_bbramp_pwm(state, bb_ramp_pwm_normal_socs);
                        } else {
                                dib0090_set_rframp_pwm(state, rf_ramp_pwm_vhf);
                                dib0090_set_bbramp_pwm(state, bb_ramp_pwm_normal);
                        }
                } else
#endif
                {
                        if (state->identity.in_soc) {
                                if (state->identity.version == SOC_8090_P1G_11R1 || state->identity.version == SOC_8090_P1G_21R1)
                                        dib0090_set_rframp_pwm(state, rf_ramp_pwm_uhf_8090);
                                else if (state->identity.version == SOC_7090_P1G_11R1 || state->identity.version == SOC_7090_P1G_21R1)
                                        dib0090_set_rframp_pwm(state, rf_ramp_pwm_uhf_7090);
                                dib0090_set_bbramp_pwm(state, bb_ramp_pwm_normal_socs);
                        } else {
                                dib0090_set_rframp_pwm(state, rf_ramp_pwm_uhf);
                                dib0090_set_bbramp_pwm(state, bb_ramp_pwm_normal);
                        }
                }

                if (state->rf_ramp[0] != 0)
                        dib0090_write_reg(state, 0x32, (3 << 11));
                else
                        dib0090_write_reg(state, 0x32, (0 << 11));

                dib0090_write_reg(state, 0x04, 0x01);
                dib0090_write_reg(state, 0x39, (1 << 10));
        }
}

EXPORT_SYMBOL(dib0090_pwm_gain_reset);

static u32 dib0090_get_slow_adc_val(struct dib0090_state *state)
{
        u16 adc_val = dib0090_read_reg(state, 0x1d);
        if (state->identity.in_soc)
                adc_val >>= 2;
        return adc_val;
}

int dib0090_gain_control(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;
        enum frontend_tune_state *tune_state = &state->tune_state;
        int ret = 10;

        u16 wbd_val = 0;
        u8 apply_gain_immediatly = 1;
        s16 wbd_error = 0, adc_error = 0;

        if (*tune_state == CT_AGC_START) {
                state->agc_freeze = 0;
                dib0090_write_reg(state, 0x04, 0x0);

#ifdef CONFIG_BAND_SBAND
                if (state->current_band == BAND_SBAND) {
                        dib0090_set_rframp(state, rf_ramp_sband);
                        dib0090_set_bbramp(state, bb_ramp_boost);
                } else
#endif
#ifdef CONFIG_BAND_VHF
                if (state->current_band == BAND_VHF && !state->identity.p1g) {
                        dib0090_set_rframp(state, rf_ramp_vhf);
                        dib0090_set_bbramp(state, bb_ramp_boost);
                } else
#endif
#ifdef CONFIG_BAND_CBAND
                if (state->current_band == BAND_CBAND && !state->identity.p1g) {
                        dib0090_set_rframp(state, rf_ramp_cband);
                        dib0090_set_bbramp(state, bb_ramp_boost);
                } else
#endif
                if ((state->current_band == BAND_CBAND || state->current_band == BAND_VHF) && state->identity.p1g) {
                        dib0090_set_rframp(state, rf_ramp_cband_broadmatching);
                        dib0090_set_bbramp(state, bb_ramp_boost);
                } else {
                        dib0090_set_rframp(state, rf_ramp_uhf);
                        dib0090_set_bbramp(state, bb_ramp_boost);
                }

                dib0090_write_reg(state, 0x32, 0);
                dib0090_write_reg(state, 0x39, 0);

                dib0090_wbd_target(state, state->current_rf);

                state->rf_gain_limit = state->rf_ramp[0] << WBD_ALPHA;
                state->current_gain = ((state->rf_ramp[0] + state->bb_ramp[0]) / 2) << GAIN_ALPHA;

                *tune_state = CT_AGC_STEP_0;
        } else if (!state->agc_freeze) {
                s16 wbd = 0, i, cnt;

                int adc;
                wbd_val = dib0090_get_slow_adc_val(state);

                if (*tune_state == CT_AGC_STEP_0)
                        cnt = 5;
                else
                        cnt = 1;

                for (i = 0; i < cnt; i++) {
                        wbd_val = dib0090_get_slow_adc_val(state);
                        wbd += dib0090_wbd_to_db(state, wbd_val);
                }
                wbd /= cnt;
                wbd_error = state->wbd_target - wbd;

                if (*tune_state == CT_AGC_STEP_0) {
                        if (wbd_error < 0 && state->rf_gain_limit > 0 && !state->identity.p1g) {
#ifdef CONFIG_BAND_CBAND
                                /* in case of CBAND tune reduce first the lt_gain2 before adjusting the RF gain */
                                u8 ltg2 = (state->rf_lt_def >> 10) & 0x7;
                                if (state->current_band == BAND_CBAND && ltg2) {
                                        ltg2 >>= 1;
                                        state->rf_lt_def &= ltg2 << 10; /* reduce in 3 steps from 7 to 0 */
                                }
#endif
                        } else {
                                state->agc_step = 0;
                                *tune_state = CT_AGC_STEP_1;
                        }
                } else {
                        /* calc the adc power */
                        adc = state->config->get_adc_power(fe);
                        adc = (adc * ((s32) 355774) + (((s32) 1) << 20)) >> 21; /* included in [0:-700] */

                        adc_error = (s16) (((s32) ADC_TARGET) - adc);
#ifdef CONFIG_STANDARD_DAB
                        if (state->fe->dtv_property_cache.delivery_system == STANDARD_DAB)
                                adc_error -= 10;
#endif
#ifdef CONFIG_STANDARD_DVBT
                        if (state->fe->dtv_property_cache.delivery_system == STANDARD_DVBT &&
                                        (state->fe->dtv_property_cache.modulation == QAM_64 || state->fe->dtv_property_cache.modulation == QAM_16))
                                adc_error += 60;
#endif
#ifdef CONFIG_SYS_ISDBT
                        if ((state->fe->dtv_property_cache.delivery_system == SYS_ISDBT) && (((state->fe->dtv_property_cache.layer[0].segment_count >
                                                                0)
                                                        &&
                                                        ((state->fe->dtv_property_cache.layer[0].modulation ==
                                                          QAM_64)
                                                         || (state->fe->dtv_property_cache.
                                                                 layer[0].modulation == QAM_16)))
                                                ||
                                                ((state->fe->dtv_property_cache.layer[1].segment_count >
                                                  0)
                                                 &&
                                                 ((state->fe->dtv_property_cache.layer[1].modulation ==
                                                   QAM_64)
                                                  || (state->fe->dtv_property_cache.
                                                          layer[1].modulation == QAM_16)))
                                                ||
                                                ((state->fe->dtv_property_cache.layer[2].segment_count >
                                                  0)
                                                 &&
                                                 ((state->fe->dtv_property_cache.layer[2].modulation ==
                                                   QAM_64)
                                                  || (state->fe->dtv_property_cache.
                                                          layer[2].modulation == QAM_16)))
                                                )
                                )
                                adc_error += 60;
#endif

                        if (*tune_state == CT_AGC_STEP_1) {     /* quickly go to the correct range of the ADC power */
                                if (ABS(adc_error) < 50 || state->agc_step++ > 5) {

#ifdef CONFIG_STANDARD_DAB
                                        if (state->fe->dtv_property_cache.delivery_system == STANDARD_DAB) {
                                                dib0090_write_reg(state, 0x02, (1 << 15) | (15 << 11) | (31 << 6) | (63));      /* cap value = 63 : narrow BB filter : Fc = 1.8MHz */
                                                dib0090_write_reg(state, 0x04, 0x0);
                                        } else
#endif
                                        {
                                                dib0090_write_reg(state, 0x02, (1 << 15) | (3 << 11) | (6 << 6) | (32));
                                                dib0090_write_reg(state, 0x04, 0x01);   /*0 = 1KHz ; 1 = 150Hz ; 2 = 50Hz ; 3 = 50KHz ; 4 = servo fast */
                                        }

                                        *tune_state = CT_AGC_STOP;
                                }
                        } else {
                                /* everything higher than or equal to CT_AGC_STOP means tracking */
                                ret = 100;      /* 10ms interval */
                                apply_gain_immediatly = 0;
                        }
                }
#ifdef DEBUG_AGC
                dprintk
                        ("tune state %d, ADC = %3ddB (ADC err %3d) WBD %3ddB (WBD err %3d, WBD val SADC: %4d), RFGainLimit (TOP): %3d, signal: %3ddBm",
                         (u32) *tune_state, (u32) adc, (u32) adc_error, (u32) wbd, (u32) wbd_error, (u32) wbd_val,
                         (u32) state->rf_gain_limit >> WBD_ALPHA, (s32) 200 + adc - (state->current_gain >> GAIN_ALPHA));
#endif
        }

        /* apply gain */
        if (!state->agc_freeze)
                dib0090_gain_apply(state, adc_error, wbd_error, apply_gain_immediatly);
        return ret;
}

EXPORT_SYMBOL(dib0090_gain_control);

void dib0090_get_current_gain(struct dvb_frontend *fe, u16 * rf, u16 * bb, u16 * rf_gain_limit, u16 * rflt)
{
        struct dib0090_state *state = fe->tuner_priv;
        if (rf)
                *rf = state->gain[0];
        if (bb)
                *bb = state->gain[1];
        if (rf_gain_limit)
                *rf_gain_limit = state->rf_gain_limit;
        if (rflt)
                *rflt = (state->rf_lt_def >> 10) & 0x7;
}

EXPORT_SYMBOL(dib0090_get_current_gain);

u16 dib0090_get_wbd_offset(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;
        u32 f_MHz = state->fe->dtv_property_cache.frequency / 1000000;
        s32 current_temp = state->temperature;
        s32 wbd_thot, wbd_tcold;
        const struct dib0090_wbd_slope *wbd = state->current_wbd_table;

        while (f_MHz > wbd->max_freq)
                wbd++;

        dprintk("using wbd-table-entry with max freq %d", wbd->max_freq);

        if (current_temp < 0)
                current_temp = 0;
        if (current_temp > 128)
                current_temp = 128;

        state->wbdmux &= ~(7 << 13);
        if (wbd->wbd_gain != 0)
                state->wbdmux |= (wbd->wbd_gain << 13);
        else
                state->wbdmux |= (4 << 13);

        dib0090_write_reg(state, 0x10, state->wbdmux);

        wbd_thot = wbd->offset_hot - (((u32) wbd->slope_hot * f_MHz) >> 6);
        wbd_tcold = wbd->offset_cold - (((u32) wbd->slope_cold * f_MHz) >> 6);

        wbd_tcold += ((wbd_thot - wbd_tcold) * current_temp) >> 7;

        state->wbd_target = dib0090_wbd_to_db(state, state->wbd_offset + wbd_tcold);
        dprintk("wbd-target: %d dB", (u32) state->wbd_target);
        dprintk("wbd offset applied is %d", wbd_tcold);

        return state->wbd_offset + wbd_tcold;
}

EXPORT_SYMBOL(dib0090_get_wbd_offset);

static const u16 dib0090_defaults[] = {

        25, 0x01,
        0x0000,
        0x99a0,
        0x6008,
        0x0000,
        0x8bcb,
        0x0000,
        0x0405,
        0x0000,
        0x0000,
        0x0000,
        0xb802,
        0x0300,
        0x2d12,
        0xbac0,
        0x7c00,
        0xdbb9,
        0x0954,
        0x0743,
        0x8000,
        0x0001,
        0x0040,
        0x0100,
        0x0000,
        0xe910,
        0x149e,

        1, 0x1c,
        0xff2d,

        1, 0x39,
        0x0000,

        2, 0x1e,
        0x07FF,
        0x0007,

        1, 0x24,
        EN_UHF | EN_CRYSTAL,

        2, 0x3c,
        0x3ff,
        0x111,
        0
};

static const u16 dib0090_p1g_additionnal_defaults[] = {
        1, 0x05,
        0xabcd,

        1, 0x11,
        0x00b4,

        1, 0x1c,
        0xfffd,

        1, 0x40,
        0x108,
        0
};

static void dib0090_set_default_config(struct dib0090_state *state, const u16 * n)
{
        u16 l, r;

        l = pgm_read_word(n++);
        while (l) {
                r = pgm_read_word(n++);
                do {
                        dib0090_write_reg(state, r, pgm_read_word(n++));
                        r++;
                } while (--l);
                l = pgm_read_word(n++);
        }
}

#define CAP_VALUE_MIN (u8)  9
#define CAP_VALUE_MAX (u8) 40
#define HR_MIN        (u8) 25
#define HR_MAX        (u8) 40
#define POLY_MIN      (u8)  0
#define POLY_MAX      (u8)  8

void dib0090_set_EFUSE(struct dib0090_state *state)
{
        u8 c, h, n;
        u16 e2, e4;
        u16 cal;

        e2 = dib0090_read_reg(state, 0x26);
        e4 = dib0090_read_reg(state, 0x28);

        if ((state->identity.version == P1D_E_F) ||
                        (state->identity.version == P1G) || (e2 == 0xffff)) {

                dib0090_write_reg(state, 0x22, 0x10);
                cal = (dib0090_read_reg(state, 0x22) >> 6) & 0x3ff;

                if ((cal < 670) || (cal == 1023))
                        cal = 850;
                n = 165 - ((cal * 10)>>6) ;
                e2 = e4 = (3<<12) | (34<<6) | (n);
        }

        if (e2 != e4)
                e2 &= e4; /* Remove the redundancy  */

        if (e2 != 0xffff) {
                c = e2 & 0x3f;
                n = (e2 >> 12) & 0xf;
                h = (e2 >> 6) & 0x3f;

                if ((c >= CAP_VALUE_MAX) || (c <= CAP_VALUE_MIN))
                        c = 32;
                if ((h >= HR_MAX) || (h <= HR_MIN))
                        h = 34;
                if ((n >= POLY_MAX) || (n <= POLY_MIN))
                        n = 3;

                dib0090_write_reg(state, 0x13, (h << 10)) ;
                e2 = (n<<11) | ((h>>2)<<6) | (c);
                dib0090_write_reg(state, 0x2, e2) ; /* Load the BB_2 */
        }
}

static int dib0090_reset(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;

        dib0090_reset_digital(fe, state->config);
        if (dib0090_identify(fe) < 0)
                return -EIO;

#ifdef CONFIG_TUNER_DIB0090_P1B_SUPPORT
        if (!(state->identity.version & 0x1))   /* it is P1B - reset is already done */
                return 0;
#endif

        if (!state->identity.in_soc) {
                if ((dib0090_read_reg(state, 0x1a) >> 5) & 0x2)
                        dib0090_write_reg(state, 0x1b, (EN_IQADC | EN_BB | EN_BIAS | EN_DIGCLK | EN_PLL | EN_CRYSTAL));
                else
                        dib0090_write_reg(state, 0x1b, (EN_DIGCLK | EN_PLL | EN_CRYSTAL));
        }

        dib0090_set_default_config(state, dib0090_defaults);

        if (state->identity.in_soc)
                dib0090_write_reg(state, 0x18, 0x2910);  /* charge pump current = 0 */

        if (state->identity.p1g)
                dib0090_set_default_config(state, dib0090_p1g_additionnal_defaults);

        /* Update the efuse : Only available for KROSUS > P1C  and SOC as well*/
        if (((state->identity.version & 0x1f) >= P1D_E_F) || (state->identity.in_soc))
                dib0090_set_EFUSE(state);

        /* Congigure in function of the crystal */
        if (state->config->io.clock_khz >= 24000)
                dib0090_write_reg(state, 0x14, 1);
        else
                dib0090_write_reg(state, 0x14, 2);
        dprintk("Pll lock : %d", (dib0090_read_reg(state, 0x1a) >> 11) & 0x1);

        state->calibrate = DC_CAL | WBD_CAL | TEMP_CAL; /* enable iq-offset-calibration and wbd-calibration when tuning next time */

        return 0;
}

#define steps(u) (((u) > 15) ? ((u)-16) : (u))
#define INTERN_WAIT 10
static int dib0090_get_offset(struct dib0090_state *state, enum frontend_tune_state *tune_state)
{
        int ret = INTERN_WAIT * 10;

        switch (*tune_state) {
        case CT_TUNER_STEP_2:
                /* Turns to positive */
                dib0090_write_reg(state, 0x1f, 0x7);
                *tune_state = CT_TUNER_STEP_3;
                break;

        case CT_TUNER_STEP_3:
                state->adc_diff = dib0090_read_reg(state, 0x1d);

                /* Turns to negative */
                dib0090_write_reg(state, 0x1f, 0x4);
                *tune_state = CT_TUNER_STEP_4;
                break;

        case CT_TUNER_STEP_4:
                state->adc_diff -= dib0090_read_reg(state, 0x1d);
                *tune_state = CT_TUNER_STEP_5;
                ret = 0;
                break;

        default:
                break;
        }

        return ret;
}

struct dc_calibration {
        u8 addr;
        u8 offset;
        u8 pga:1;
        u16 bb1;
        u8 i:1;
};

static const struct dc_calibration dc_table[] = {
        /* Step1 BB gain1= 26 with boost 1, gain 2 = 0 */
        {0x06, 5, 1, (1 << 13) | (0 << 8) | (26 << 3), 1},
        {0x07, 11, 1, (1 << 13) | (0 << 8) | (26 << 3), 0},
        /* Step 2 BB gain 1 = 26 with boost = 1 & gain 2 = 29 */
        {0x06, 0, 0, (1 << 13) | (29 << 8) | (26 << 3), 1},
        {0x06, 10, 0, (1 << 13) | (29 << 8) | (26 << 3), 0},
        {0},
};

static const struct dc_calibration dc_p1g_table[] = {
        /* Step1 BB gain1= 26 with boost 1, gain 2 = 0 */
        /* addr ; trim reg offset ; pga ; CTRL_BB1 value ; i or q */
        {0x06, 5, 1, (1 << 13) | (0 << 8) | (15 << 3), 1},
        {0x07, 11, 1, (1 << 13) | (0 << 8) | (15 << 3), 0},
        /* Step 2 BB gain 1 = 26 with boost = 1 & gain 2 = 29 */
        {0x06, 0, 0, (1 << 13) | (29 << 8) | (15 << 3), 1},
        {0x06, 10, 0, (1 << 13) | (29 << 8) | (15 << 3), 0},
        {0},
};

static void dib0090_set_trim(struct dib0090_state *state)
{
        u16 *val;

        if (state->dc->addr == 0x07)
                val = &state->bb7;
        else
                val = &state->bb6;

        *val &= ~(0x1f << state->dc->offset);
        *val |= state->step << state->dc->offset;

        dib0090_write_reg(state, state->dc->addr, *val);
}

static int dib0090_dc_offset_calibration(struct dib0090_state *state, enum frontend_tune_state *tune_state)
{
        int ret = 0;
        u16 reg;

        switch (*tune_state) {
        case CT_TUNER_START:
                dprintk("Start DC offset calibration");

                /* force vcm2 = 0.8V */
                state->bb6 = 0;
                state->bb7 = 0x040d;

                /* the LNA AND LO are off */
                reg = dib0090_read_reg(state, 0x24) & 0x0ffb;   /* shutdown lna and lo */
                dib0090_write_reg(state, 0x24, reg);

                state->wbdmux = dib0090_read_reg(state, 0x10);
                dib0090_write_reg(state, 0x10, (state->wbdmux & ~(0xff << 3)) | (0x7 << 3) | 0x3);
                dib0090_write_reg(state, 0x23, dib0090_read_reg(state, 0x23) & ~(1 << 14));

                state->dc = dc_table;

                if (state->identity.p1g)
                        state->dc = dc_p1g_table;
                *tune_state = CT_TUNER_STEP_0;

                /* fall through */

        case CT_TUNER_STEP_0:
                dprintk("Sart/continue DC calibration for %s path", (state->dc->i == 1) ? "I" : "Q");
                dib0090_write_reg(state, 0x01, state->dc->bb1);
                dib0090_write_reg(state, 0x07, state->bb7 | (state->dc->i << 7));

                state->step = 0;
                state->min_adc_diff = 1023;
                *tune_state = CT_TUNER_STEP_1;
                ret = 50;
                break;

        case CT_TUNER_STEP_1:
                dib0090_set_trim(state);
                *tune_state = CT_TUNER_STEP_2;
                break;

        case CT_TUNER_STEP_2:
        case CT_TUNER_STEP_3:
        case CT_TUNER_STEP_4:
                ret = dib0090_get_offset(state, tune_state);
                break;

        case CT_TUNER_STEP_5:   /* found an offset */
                dprintk("adc_diff = %d, current step= %d", (u32) state->adc_diff, state->step);
                if (state->step == 0 && state->adc_diff < 0) {
                        state->min_adc_diff = -1023;
                        dprintk("Change of sign of the minimum adc diff");
                }

                dprintk("adc_diff = %d, min_adc_diff = %d current_step = %d", state->adc_diff, state->min_adc_diff, state->step);

                /* first turn for this frequency */
                if (state->step == 0) {
                        if (state->dc->pga && state->adc_diff < 0)
                                state->step = 0x10;
                        if (state->dc->pga == 0 && state->adc_diff > 0)
                                state->step = 0x10;
                }

                /* Look for a change of Sign in the Adc_diff.min_adc_diff is used to STORE the setp N-1 */
                if ((state->adc_diff & 0x8000) == (state->min_adc_diff & 0x8000) && steps(state->step) < 15) {
                        /* stop search when the delta the sign is changing and Steps =15 and Step=0 is force for continuance */
                        state->step++;
                        state->min_adc_diff = state->adc_diff;
                        *tune_state = CT_TUNER_STEP_1;
                } else {
                        /* the minimum was what we have seen in the step before */
                        if (ABS(state->adc_diff) > ABS(state->min_adc_diff)) {
                                dprintk("Since adc_diff N = %d  > adc_diff step N-1 = %d, Come back one step", state->adc_diff, state->min_adc_diff);
                                state->step--;
                        }

                        dib0090_set_trim(state);
                        dprintk("BB Offset Cal, BBreg=%hd,Offset=%hd,Value Set=%hd", state->dc->addr, state->adc_diff, state->step);

                        state->dc++;
                        if (state->dc->addr == 0)       /* done */
                                *tune_state = CT_TUNER_STEP_6;
                        else
                                *tune_state = CT_TUNER_STEP_0;

                }
                break;

        case CT_TUNER_STEP_6:
                dib0090_write_reg(state, 0x07, state->bb7 & ~0x0008);
                dib0090_write_reg(state, 0x1f, 0x7);
                *tune_state = CT_TUNER_START;   /* reset done -> real tuning can now begin */
                state->calibrate &= ~DC_CAL;
        default:
                break;
        }
        return ret;
}

static int dib0090_wbd_calibration(struct dib0090_state *state, enum frontend_tune_state *tune_state)
{
        u8 wbd_gain;
        const struct dib0090_wbd_slope *wbd = state->current_wbd_table;

        switch (*tune_state) {
        case CT_TUNER_START:
                while (state->current_rf / 1000 > wbd->max_freq)
                        wbd++;
                if (wbd->wbd_gain != 0)
                        wbd_gain = wbd->wbd_gain;
                else {
                        wbd_gain = 4;
#if defined(CONFIG_BAND_LBAND) || defined(CONFIG_BAND_SBAND)
                        if ((state->current_band == BAND_LBAND) || (state->current_band == BAND_SBAND))
                                wbd_gain = 2;
#endif
                }

                if (wbd_gain == state->wbd_calibration_gain) {  /* the WBD calibration has already been done */
                        *tune_state = CT_TUNER_START;
                        state->calibrate &= ~WBD_CAL;
                        return 0;
                }

                dib0090_write_reg(state, 0x10, 0x1b81 | (1 << 10) | (wbd_gain << 13) | (1 << 3));

                dib0090_write_reg(state, 0x24, ((EN_UHF & 0x0fff) | (1 << 1)));
                *tune_state = CT_TUNER_STEP_0;
                state->wbd_calibration_gain = wbd_gain;
                return 90;      /* wait for the WBDMUX to switch and for the ADC to sample */

        case CT_TUNER_STEP_0:
                state->wbd_offset = dib0090_get_slow_adc_val(state);
                dprintk("WBD calibration offset = %d", state->wbd_offset);
                *tune_state = CT_TUNER_START;   /* reset done -> real tuning can now begin */
                state->calibrate &= ~WBD_CAL;
                break;

        default:
                break;
        }
        return 0;
}

static void dib0090_set_bandwidth(struct dib0090_state *state)
{
        u16 tmp;

        if (state->fe->dtv_property_cache.bandwidth_hz / 1000 <= 5000)
                tmp = (3 << 14);
        else if (state->fe->dtv_property_cache.bandwidth_hz / 1000 <= 6000)
                tmp = (2 << 14);
        else if (state->fe->dtv_property_cache.bandwidth_hz / 1000 <= 7000)
                tmp = (1 << 14);
        else
                tmp = (0 << 14);

        state->bb_1_def &= 0x3fff;
        state->bb_1_def |= tmp;

        dib0090_write_reg(state, 0x01, state->bb_1_def);        /* be sure that we have the right bb-filter */

        dib0090_write_reg(state, 0x03, 0x6008); /* = 0x6008 : vcm3_trim = 1 ; filter2_gm1_trim = 8 ; filter2_cutoff_freq = 0 */
        dib0090_write_reg(state, 0x04, 0x1);    /* 0 = 1KHz ; 1 = 50Hz ; 2 = 150Hz ; 3 = 50KHz ; 4 = servo fast */
        if (state->identity.in_soc) {
                dib0090_write_reg(state, 0x05, 0x9bcf); /* attenuator_ibias_tri = 2 ; input_stage_ibias_tr = 1 ; nc = 11 ; ext_gm_trim = 1 ; obuf_ibias_trim = 4 ; filter13_gm2_ibias_t = 15 */
        } else {
                dib0090_write_reg(state, 0x02, (5 << 11) | (8 << 6) | (22 & 0x3f));     /* 22 = cap_value */
                dib0090_write_reg(state, 0x05, 0xabcd); /* = 0xabcd : attenuator_ibias_tri = 2 ; input_stage_ibias_tr = 2 ; nc = 11 ; ext_gm_trim = 1 ; obuf_ibias_trim = 4 ; filter13_gm2_ibias_t = 13 */
        }
}

static const struct dib0090_pll dib0090_pll_table[] = {
#ifdef CONFIG_BAND_CBAND
        {56000, 0, 9, 48, 6},
        {70000, 1, 9, 48, 6},
        {87000, 0, 8, 32, 4},
        {105000, 1, 8, 32, 4},
        {115000, 0, 7, 24, 6},
        {140000, 1, 7, 24, 6},
        {170000, 0, 6, 16, 4},
#endif
#ifdef CONFIG_BAND_VHF
        {200000, 1, 6, 16, 4},
        {230000, 0, 5, 12, 6},
        {280000, 1, 5, 12, 6},
        {340000, 0, 4, 8, 4},
        {380000, 1, 4, 8, 4},
        {450000, 0, 3, 6, 6},
#endif
#ifdef CONFIG_BAND_UHF
        {580000, 1, 3, 6, 6},
        {700000, 0, 2, 4, 4},
        {860000, 1, 2, 4, 4},
#endif
#ifdef CONFIG_BAND_LBAND
        {1800000, 1, 0, 2, 4},
#endif
#ifdef CONFIG_BAND_SBAND
        {2900000, 0, 14, 1, 4},
#endif
};

static const struct dib0090_tuning dib0090_tuning_table_fm_vhf_on_cband[] = {

#ifdef CONFIG_BAND_CBAND
        {184000, 4, 1, 15, 0x280, 0x2912, 0xb94e, EN_CAB},
        {227000, 4, 3, 15, 0x280, 0x2912, 0xb94e, EN_CAB},
        {380000, 4, 7, 15, 0x280, 0x2912, 0xb94e, EN_CAB},
#endif
#ifdef CONFIG_BAND_UHF
        {520000, 2, 0, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {550000, 2, 2, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {650000, 2, 3, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {750000, 2, 5, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {850000, 2, 6, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {900000, 2, 7, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
#endif
#ifdef CONFIG_BAND_LBAND
        {1500000, 4, 0, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1600000, 4, 1, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1800000, 4, 3, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
#endif
#ifdef CONFIG_BAND_SBAND
        {2300000, 1, 4, 20, 0x300, 0x2d2A, 0x82c7, EN_SBD},
        {2900000, 1, 7, 20, 0x280, 0x2deb, 0x8347, EN_SBD},
#endif
};

static const struct dib0090_tuning dib0090_tuning_table[] = {

#ifdef CONFIG_BAND_CBAND
        {170000, 4, 1, 15, 0x280, 0x2912, 0xb94e, EN_CAB},
#endif
#ifdef CONFIG_BAND_VHF
        {184000, 1, 1, 15, 0x300, 0x4d12, 0xb94e, EN_VHF},
        {227000, 1, 3, 15, 0x300, 0x4d12, 0xb94e, EN_VHF},
        {380000, 1, 7, 15, 0x300, 0x4d12, 0xb94e, EN_VHF},
#endif
#ifdef CONFIG_BAND_UHF
        {520000, 2, 0, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {550000, 2, 2, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {650000, 2, 3, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {750000, 2, 5, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {850000, 2, 6, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {900000, 2, 7, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
#endif
#ifdef CONFIG_BAND_LBAND
        {1500000, 4, 0, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1600000, 4, 1, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1800000, 4, 3, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
#endif
#ifdef CONFIG_BAND_SBAND
        {2300000, 1, 4, 20, 0x300, 0x2d2A, 0x82c7, EN_SBD},
        {2900000, 1, 7, 20, 0x280, 0x2deb, 0x8347, EN_SBD},
#endif
};

static const struct dib0090_tuning dib0090_p1g_tuning_table[] = {
#ifdef CONFIG_BAND_CBAND
        {170000, 4, 1, 0x820f, 0x300, 0x2d22, 0x82cb, EN_CAB},
#endif
#ifdef CONFIG_BAND_VHF
        {184000, 1, 1, 15, 0x300, 0x4d12, 0xb94e, EN_VHF},
        {227000, 1, 3, 15, 0x300, 0x4d12, 0xb94e, EN_VHF},
        {380000, 1, 7, 15, 0x300, 0x4d12, 0xb94e, EN_VHF},
#endif
#ifdef CONFIG_BAND_UHF
        {510000, 2, 0, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {540000, 2, 1, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {600000, 2, 3, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {630000, 2, 4, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {680000, 2, 5, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {720000, 2, 6, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {900000, 2, 7, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
#endif
#ifdef CONFIG_BAND_LBAND
        {1500000, 4, 0, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1600000, 4, 1, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1800000, 4, 3, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
#endif
#ifdef CONFIG_BAND_SBAND
        {2300000, 1, 4, 20, 0x300, 0x2d2A, 0x82c7, EN_SBD},
        {2900000, 1, 7, 20, 0x280, 0x2deb, 0x8347, EN_SBD},
#endif
};

static const struct dib0090_pll dib0090_p1g_pll_table[] = {
#ifdef CONFIG_BAND_CBAND
        {57000, 0, 11, 48, 6},
        {70000, 1, 11, 48, 6},
        {86000, 0, 10, 32, 4},
        {105000, 1, 10, 32, 4},
        {115000, 0, 9, 24, 6},
        {140000, 1, 9, 24, 6},
        {170000, 0, 8, 16, 4},
#endif
#ifdef CONFIG_BAND_VHF
        {200000, 1, 8, 16, 4},
        {230000, 0, 7, 12, 6},
        {280000, 1, 7, 12, 6},
        {340000, 0, 6, 8, 4},
        {380000, 1, 6, 8, 4},
        {455000, 0, 5, 6, 6},
#endif
#ifdef CONFIG_BAND_UHF
        {580000, 1, 5, 6, 6},
        {680000, 0, 4, 4, 4},
        {860000, 1, 4, 4, 4},
#endif
#ifdef CONFIG_BAND_LBAND
        {1800000, 1, 2, 2, 4},
#endif
#ifdef CONFIG_BAND_SBAND
        {2900000, 0, 1, 1, 6},
#endif
};

static const struct dib0090_tuning dib0090_p1g_tuning_table_fm_vhf_on_cband[] = {
#ifdef CONFIG_BAND_CBAND
        {184000, 4, 3, 0x4187, 0x2c0, 0x2d22, 0x81cb, EN_CAB},
        {227000, 4, 3, 0x4187, 0x2c0, 0x2d22, 0x81cb, EN_CAB},
        {380000, 4, 3, 0x4187, 0x2c0, 0x2d22, 0x81cb, EN_CAB},
#endif
#ifdef CONFIG_BAND_UHF
        {520000, 2, 0, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {550000, 2, 2, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {650000, 2, 3, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {750000, 2, 5, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {850000, 2, 6, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
        {900000, 2, 7, 15, 0x300, 0x1d12, 0xb9ce, EN_UHF},
#endif
#ifdef CONFIG_BAND_LBAND
        {1500000, 4, 0, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1600000, 4, 1, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
        {1800000, 4, 3, 20, 0x300, 0x1912, 0x82c9, EN_LBD},
#endif
#ifdef CONFIG_BAND_SBAND
        {2300000, 1, 4, 20, 0x300, 0x2d2A, 0x82c7, EN_SBD},
        {2900000, 1, 7, 20, 0x280, 0x2deb, 0x8347, EN_SBD},
#endif
};

static const struct dib0090_tuning dib0090_tuning_table_cband_7090[] = {
#ifdef CONFIG_BAND_CBAND
        {300000, 4, 3, 0x018F, 0x2c0, 0x2d22, 0xb9ce, EN_CAB},
        {380000, 4, 10, 0x018F, 0x2c0, 0x2d22, 0xb9ce, EN_CAB},
        {570000, 4, 10, 0x8190, 0x2c0, 0x2d22, 0xb9ce, EN_CAB},
        {858000, 4, 5, 0x8190, 0x2c0, 0x2d22, 0xb9ce, EN_CAB},
#endif
};

static int dib0090_captrim_search(struct dib0090_state *state, enum frontend_tune_state *tune_state)
{
        int ret = 0;
        u16 lo4 = 0xe900;

        s16 adc_target;
        u16 adc;
        s8 step_sign;
        u8 force_soft_search = 0;

        if (state->identity.version == SOC_8090_P1G_11R1 || state->identity.version == SOC_8090_P1G_21R1)
                force_soft_search = 1;

        if (*tune_state == CT_TUNER_START) {
                dprintk("Start Captrim search : %s", (force_soft_search == 1) ? "FORCE SOFT SEARCH" : "AUTO");
                dib0090_write_reg(state, 0x10, 0x2B1);
                dib0090_write_reg(state, 0x1e, 0x0032);

                if (!state->tuner_is_tuned) {
                        /* prepare a complete captrim */
                        if (!state->identity.p1g || force_soft_search)
                                state->step = state->captrim = state->fcaptrim = 64;

                        state->current_rf = state->rf_request;
                } else {        /* we are already tuned to this frequency - the configuration is correct  */
                        if (!state->identity.p1g || force_soft_search) {
                                /* do a minimal captrim even if the frequency has not changed */
                                state->step = 4;
                                state->captrim = state->fcaptrim = dib0090_read_reg(state, 0x18) & 0x7f;
                        }
                }
                state->adc_diff = 3000;
                *tune_state = CT_TUNER_STEP_0;

        } else if (*tune_state == CT_TUNER_STEP_0) {
                if (state->identity.p1g && !force_soft_search) {
                        u8 ratio = 31;

                        dib0090_write_reg(state, 0x40, (3 << 7) | (ratio << 2) | (1 << 1) | 1);
                        dib0090_read_reg(state, 0x40);
                        ret = 50;
                } else {
                        state->step /= 2;
                        dib0090_write_reg(state, 0x18, lo4 | state->captrim);

                        if (state->identity.in_soc)
                                ret = 25;

                }
                *tune_state = CT_TUNER_STEP_1;

        } else if (*tune_state == CT_TUNER_STEP_1) {
                if (state->identity.p1g && !force_soft_search) {
                        dib0090_write_reg(state, 0x40, 0x18c | (0 << 1) | 0);
                        dib0090_read_reg(state, 0x40);

                        state->fcaptrim = dib0090_read_reg(state, 0x18) & 0x7F;
                        dprintk("***Final Captrim= 0x%x", state->fcaptrim);
                        *tune_state = CT_TUNER_STEP_3;

                } else {
                        /* MERGE for all krosus before P1G */
                        adc = dib0090_get_slow_adc_val(state);
                        dprintk("CAPTRIM=%d; ADC = %d (ADC) & %dmV", (u32) state->captrim, (u32) adc, (u32) (adc) * (u32) 1800 / (u32) 1024);

                        if (state->rest == 0 || state->identity.in_soc) {       /* Just for 8090P SOCS where auto captrim HW bug : TO CHECK IN ACI for SOCS !!! if 400 for 8090p SOC => tune issue !!! */
                                adc_target = 200;
                        } else
                                adc_target = 400;

                        if (adc >= adc_target) {
                                adc -= adc_target;
                                step_sign = -1;
                        } else {
                                adc = adc_target - adc;
                                step_sign = 1;
                        }

                        if (adc < state->adc_diff) {
                                dprintk("CAPTRIM=%d is closer to target (%d/%d)", (u32) state->captrim, (u32) adc, (u32) state->adc_diff);
                                state->adc_diff = adc;
                                state->fcaptrim = state->captrim;
                        }

                        state->captrim += step_sign * state->step;
                        if (state->step >= 1)
                                *tune_state = CT_TUNER_STEP_0;
                        else
                                *tune_state = CT_TUNER_STEP_2;

                        ret = 25;
                }
        } else if (*tune_state == CT_TUNER_STEP_2) {    /* this step is only used by krosus < P1G */
                /*write the final cptrim config */
                dib0090_write_reg(state, 0x18, lo4 | state->fcaptrim);

                *tune_state = CT_TUNER_STEP_3;

        } else if (*tune_state == CT_TUNER_STEP_3) {
                state->calibrate &= ~CAPTRIM_CAL;
                *tune_state = CT_TUNER_STEP_0;
        }

        return ret;
}

static int dib0090_get_temperature(struct dib0090_state *state, enum frontend_tune_state *tune_state)
{
        int ret = 15;
        s16 val;

        switch (*tune_state) {
        case CT_TUNER_START:
                state->wbdmux = dib0090_read_reg(state, 0x10);
                dib0090_write_reg(state, 0x10, (state->wbdmux & ~(0xff << 3)) | (0x8 << 3));

                state->bias = dib0090_read_reg(state, 0x13);
                dib0090_write_reg(state, 0x13, state->bias | (0x3 << 8));

                *tune_state = CT_TUNER_STEP_0;
                /* wait for the WBDMUX to switch and for the ADC to sample */
                break;

        case CT_TUNER_STEP_0:
                state->adc_diff = dib0090_get_slow_adc_val(state);
                dib0090_write_reg(state, 0x13, (state->bias & ~(0x3 << 8)) | (0x2 << 8));
                *tune_state = CT_TUNER_STEP_1;
                break;

        case CT_TUNER_STEP_1:
                val = dib0090_get_slow_adc_val(state);
                state->temperature = ((s16) ((val - state->adc_diff) * 180) >> 8) + 55;

                dprintk("temperature: %d C", state->temperature - 30);

                *tune_state = CT_TUNER_STEP_2;
                break;

        case CT_TUNER_STEP_2:
                dib0090_write_reg(state, 0x13, state->bias);
                dib0090_write_reg(state, 0x10, state->wbdmux);  /* write back original WBDMUX */

                *tune_state = CT_TUNER_START;
                state->calibrate &= ~TEMP_CAL;
                if (state->config->analog_output == 0)
                        dib0090_write_reg(state, 0x23, dib0090_read_reg(state, 0x23) | (1 << 14));

                break;

        default:
                ret = 0;
                break;
        }
        return ret;
}

#define WBD     0x781           /* 1 1 1 1 0000 0 0 1 */
static int dib0090_tune(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;
        const struct dib0090_tuning *tune = state->current_tune_table_index;
        const struct dib0090_pll *pll = state->current_pll_table_index;
        enum frontend_tune_state *tune_state = &state->tune_state;

        u16 lo5, lo6, Den, tmp;
        u32 FBDiv, Rest, FREF, VCOF_kHz = 0;
        int ret = 10;           /* 1ms is the default delay most of the time */
        u8 c, i;

        /************************* VCO ***************************/
        /* Default values for FG                                 */
        /* from these are needed :                               */
        /* Cp,HFdiv,VCOband,SD,Num,Den,FB and REFDiv             */

        /* in any case we first need to do a calibration if needed */
        if (*tune_state == CT_TUNER_START) {
                /* deactivate DataTX before some calibrations */
                if (state->calibrate & (DC_CAL | TEMP_CAL | WBD_CAL))
                        dib0090_write_reg(state, 0x23, dib0090_read_reg(state, 0x23) & ~(1 << 14));
                else
                        /* Activate DataTX in case a calibration has been done before */
                        if (state->config->analog_output == 0)
                                dib0090_write_reg(state, 0x23, dib0090_read_reg(state, 0x23) | (1 << 14));
        }

        if (state->calibrate & DC_CAL)
                return dib0090_dc_offset_calibration(state, tune_state);
        else if (state->calibrate & WBD_CAL) {
                if (state->current_rf == 0)
                        state->current_rf = state->fe->dtv_property_cache.frequency / 1000;
                return dib0090_wbd_calibration(state, tune_state);
        } else if (state->calibrate & TEMP_CAL)
                return dib0090_get_temperature(state, tune_state);
        else if (state->calibrate & CAPTRIM_CAL)
                return dib0090_captrim_search(state, tune_state);

        if (*tune_state == CT_TUNER_START) {
                /* if soc and AGC pwm control, disengage mux to be able to R/W access to 0x01 register to set the right filter (cutoff_freq_select) during the tune sequence, otherwise, SOC SERPAR error when accessing to 0x01 */
                if (state->config->use_pwm_agc && state->identity.in_soc) {
                        tmp = dib0090_read_reg(state, 0x39);
                        if ((tmp >> 10) & 0x1)
                                dib0090_write_reg(state, 0x39, tmp & ~(1 << 10));
                }

                state->current_band = (u8) BAND_OF_FREQUENCY(state->fe->dtv_property_cache.frequency / 1000);
                state->rf_request =
                        state->fe->dtv_property_cache.frequency / 1000 + (state->current_band ==
                                        BAND_UHF ? state->config->freq_offset_khz_uhf : state->config->
                                        freq_offset_khz_vhf);

                /* in ISDB-T 1seg we shift tuning frequency */
                if ((state->fe->dtv_property_cache.delivery_system == SYS_ISDBT && state->fe->dtv_property_cache.isdbt_sb_mode == 1
                                        && state->fe->dtv_property_cache.isdbt_partial_reception == 0)) {
                        const struct dib0090_low_if_offset_table *LUT_offset = state->config->low_if;
                        u8 found_offset = 0;
                        u32 margin_khz = 100;

                        if (LUT_offset != NULL) {
                                while (LUT_offset->RF_freq != 0xffff) {
                                        if (((state->rf_request > (LUT_offset->RF_freq - margin_khz))
                                                                && (state->rf_request < (LUT_offset->RF_freq + margin_khz)))
                                                        && LUT_offset->std == state->fe->dtv_property_cache.delivery_system) {
                                                state->rf_request += LUT_offset->offset_khz;
                                                found_offset = 1;
                                                break;
                                        }
                                        LUT_offset++;
                                }
                        }

                        if (found_offset == 0)
                                state->rf_request += 400;
                }
                if (state->current_rf != state->rf_request || (state->current_standard != state->fe->dtv_property_cache.delivery_system)) {
                        state->tuner_is_tuned = 0;
                        state->current_rf = 0;
                        state->current_standard = 0;

                        tune = dib0090_tuning_table;
                        if (state->identity.p1g)
                                tune = dib0090_p1g_tuning_table;

                        tmp = (state->identity.version >> 5) & 0x7;

                        if (state->identity.in_soc) {
                                if (state->config->force_cband_input) { /* Use the CBAND input for all band */
                                        if (state->current_band & BAND_CBAND || state->current_band & BAND_FM || state->current_band & BAND_VHF
                                                        || state->current_band & BAND_UHF) {
                                                state->current_band = BAND_CBAND;
                                                tune = dib0090_tuning_table_cband_7090;
                                        }
                                } else {        /* Use the CBAND input for all band under UHF */
                                        if (state->current_band & BAND_CBAND || state->current_band & BAND_FM || state->current_band & BAND_VHF) {
                                                state->current_band = BAND_CBAND;
                                                tune = dib0090_tuning_table_cband_7090;
                                        }
                                }
                        } else
                         if (tmp == 0x4 || tmp == 0x7) {
                                /* CBAND tuner version for VHF */
                                if (state->current_band == BAND_FM || state->current_band == BAND_CBAND || state->current_band == BAND_VHF) {
                                        state->current_band = BAND_CBAND;       /* Force CBAND */

                                        tune = dib0090_tuning_table_fm_vhf_on_cband;
                                        if (state->identity.p1g)
                                                tune = dib0090_p1g_tuning_table_fm_vhf_on_cband;
                                }
                        }

                        pll = dib0090_pll_table;
                        if (state->identity.p1g)
                                pll = dib0090_p1g_pll_table;

                        /* Look for the interval */
                        while (state->rf_request > tune->max_freq)
                                tune++;
                        while (state->rf_request > pll->max_freq)
                                pll++;

                        state->current_tune_table_index = tune;
                        state->current_pll_table_index = pll;

                        dib0090_write_reg(state, 0x0b, 0xb800 | (tune->switch_trim));

                        VCOF_kHz = (pll->hfdiv * state->rf_request) * 2;

                        FREF = state->config->io.clock_khz;
                        if (state->config->fref_clock_ratio != 0)
                                FREF /= state->config->fref_clock_ratio;

                        FBDiv = (VCOF_kHz / pll->topresc / FREF);
                        Rest = (VCOF_kHz / pll->topresc) - FBDiv * FREF;

                        if (Rest < LPF)
                                Rest = 0;
                        else if (Rest < 2 * LPF)
                                Rest = 2 * LPF;
                        else if (Rest > (FREF - LPF)) {
                                Rest = 0;
                                FBDiv += 1;
                        } else if (Rest > (FREF - 2 * LPF))
                                Rest = FREF - 2 * LPF;
                        Rest = (Rest * 6528) / (FREF / 10);
                        state->rest = Rest;

                        /* external loop filter, otherwise:
                         * lo5 = (0 << 15) | (0 << 12) | (0 << 11) | (3 << 9) | (4 << 6) | (3 << 4) | 4;
                         * lo6 = 0x0e34 */

                        if (Rest == 0) {
                                if (pll->vco_band)
                                        lo5 = 0x049f;
                                else
                                        lo5 = 0x041f;
                        } else {
                                if (pll->vco_band)
                                        lo5 = 0x049e;
                                else if (state->config->analog_output)
                                        lo5 = 0x041d;
                                else
                                        lo5 = 0x041c;
                        }

                        if (state->identity.p1g) {      /* Bias is done automatically in P1G */
                                if (state->identity.in_soc) {
                                        if (state->identity.version == SOC_8090_P1G_11R1)
                                                lo5 = 0x46f;
                                        else
                                                lo5 = 0x42f;
                                } else
                                        lo5 = 0x42c;
                        }

                        lo5 |= (pll->hfdiv_code << 11) | (pll->vco_band << 7);  /* bit 15 is the split to the slave, we do not do it here */

                        if (!state->config->io.pll_int_loop_filt) {
                                if (state->identity.in_soc)
                                        lo6 = 0xff98;
                                else if (state->identity.p1g || (Rest == 0))
                                        lo6 = 0xfff8;
                                else
                                        lo6 = 0xff28;
                        } else
                                lo6 = (state->config->io.pll_int_loop_filt << 3);

                        Den = 1;

                        if (Rest > 0) {
                                if (state->config->analog_output)
                                        lo6 |= (1 << 2) | 2;
                                else {
                                        if (state->identity.in_soc)
                                                lo6 |= (1 << 2) | 2;
                                        else
                                                lo6 |= (1 << 2) | 2;
                                }
                                Den = 255;
                        }
                        dib0090_write_reg(state, 0x15, (u16) FBDiv);
                        if (state->config->fref_clock_ratio != 0)
                                dib0090_write_reg(state, 0x16, (Den << 8) | state->config->fref_clock_ratio);
                        else
                                dib0090_write_reg(state, 0x16, (Den << 8) | 1);
                        dib0090_write_reg(state, 0x17, (u16) Rest);
                        dib0090_write_reg(state, 0x19, lo5);
                        dib0090_write_reg(state, 0x1c, lo6);

                        lo6 = tune->tuner_enable;
                        if (state->config->analog_output)
                                lo6 = (lo6 & 0xff9f) | 0x2;

                        dib0090_write_reg(state, 0x24, lo6 | EN_LO | state->config->use_pwm_agc * EN_CRYSTAL);

                }

                state->current_rf = state->rf_request;
                state->current_standard = state->fe->dtv_property_cache.delivery_system;

                ret = 20;
                state->calibrate = CAPTRIM_CAL; /* captrim serach now */
        }

        else if (*tune_state == CT_TUNER_STEP_0) {      /* Warning : because of captrim cal, if you change this step, change it also in _cal.c file because it is the step following captrim cal state machine */
                const struct dib0090_wbd_slope *wbd = state->current_wbd_table;

                while (state->current_rf / 1000 > wbd->max_freq)
                        wbd++;

                dib0090_write_reg(state, 0x1e, 0x07ff);
                dprintk("Final Captrim: %d", (u32) state->fcaptrim);
                dprintk("HFDIV code: %d", (u32) pll->hfdiv_code);
                dprintk("VCO = %d", (u32) pll->vco_band);
                dprintk("VCOF in kHz: %d ((%d*%d) << 1))", (u32) ((pll->hfdiv * state->rf_request) * 2), (u32) pll->hfdiv, (u32) state->rf_request);
                dprintk("REFDIV: %d, FREF: %d", (u32) 1, (u32) state->config->io.clock_khz);
                dprintk("FBDIV: %d, Rest: %d", (u32) dib0090_read_reg(state, 0x15), (u32) dib0090_read_reg(state, 0x17));
                dprintk("Num: %d, Den: %d, SD: %d", (u32) dib0090_read_reg(state, 0x17), (u32) (dib0090_read_reg(state, 0x16) >> 8),
                        (u32) dib0090_read_reg(state, 0x1c) & 0x3);

#define WBD     0x781           /* 1 1 1 1 0000 0 0 1 */
                c = 4;
                i = 3;

                if (wbd->wbd_gain != 0)
                        c = wbd->wbd_gain;

                state->wbdmux = (c << 13) | (i << 11) | (WBD | (state->config->use_pwm_agc << 1));
                dib0090_write_reg(state, 0x10, state->wbdmux);

                if ((tune->tuner_enable == EN_CAB) && state->identity.p1g) {
                        dprintk("P1G : The cable band is selected and lna_tune = %d", tune->lna_tune);
                        dib0090_write_reg(state, 0x09, tune->lna_bias);
                        dib0090_write_reg(state, 0x0b, 0xb800 | (tune->lna_tune << 6) | (tune->switch_trim));
                } else
                        dib0090_write_reg(state, 0x09, (tune->lna_tune << 5) | tune->lna_bias);

                dib0090_write_reg(state, 0x0c, tune->v2i);
                dib0090_write_reg(state, 0x0d, tune->mix);
                dib0090_write_reg(state, 0x0e, tune->load);
                *tune_state = CT_TUNER_STEP_1;

        } else if (*tune_state == CT_TUNER_STEP_1) {
                /* initialize the lt gain register */
                state->rf_lt_def = 0x7c00;

                dib0090_set_bandwidth(state);
                state->tuner_is_tuned = 1;

                state->calibrate |= WBD_CAL;
                state->calibrate |= TEMP_CAL;
                *tune_state = CT_TUNER_STOP;
        } else
                ret = FE_CALLBACK_TIME_NEVER;
        return ret;
}

static int dib0090_release(struct dvb_frontend *fe)
{
        kfree(fe->tuner_priv);
        fe->tuner_priv = NULL;
        return 0;
}

enum frontend_tune_state dib0090_get_tune_state(struct dvb_frontend *fe)
{
        struct dib0090_state *state = fe->tuner_priv;

        return state->tune_state;
}

EXPORT_SYMBOL(dib0090_get_tune_state);

int dib0090_set_tune_state(struct dvb_frontend *fe, enum frontend_tune_state tune_state)
{
        struct dib0090_state *state = fe->tuner_priv;

        state->tune_state = tune_state;
        return 0;
}

EXPORT_SYMBOL(dib0090_set_tune_state);

static int dib0090_get_frequency(struct dvb_frontend *fe, u32 * frequency)
{
        struct dib0090_state *state = fe->tuner_priv;

        *frequency = 1000 * state->current_rf;
        return 0;
}

static int dib0090_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
{
        struct dib0090_state *state = fe->tuner_priv;
        u32 ret;

        state->tune_state = CT_TUNER_START;

        do {
                ret = dib0090_tune(fe);
                if (ret != FE_CALLBACK_TIME_NEVER)
                        msleep(ret / 10);
                else
                        break;
        } while (state->tune_state != CT_TUNER_STOP);

        return 0;
}

static const struct dvb_tuner_ops dib0090_ops = {
        .info = {
                 .name = "DiBcom DiB0090",
                 .frequency_min = 45000000,
                 .frequency_max = 860000000,
                 .frequency_step = 1000,
                 },
        .release = dib0090_release,

        .init = dib0090_wakeup,
        .sleep = dib0090_sleep,
        .set_params = dib0090_set_params,
        .get_frequency = dib0090_get_frequency,
};

static const struct dvb_tuner_ops dib0090_fw_ops = {
        .info = {
                 .name = "DiBcom DiB0090",
                 .frequency_min = 45000000,
                 .frequency_max = 860000000,
                 .frequency_step = 1000,
                 },
        .release = dib0090_release,

        .init = NULL,
        .sleep = NULL,
        .set_params = NULL,
        .get_frequency = NULL,
};

static const struct dib0090_wbd_slope dib0090_wbd_table_default[] = {
        {470, 0, 250, 0, 100, 4},
        {860, 51, 866, 21, 375, 4},
        {1700, 0, 800, 0, 850, 4},
        {2900, 0, 250, 0, 100, 6},
        {0xFFFF, 0, 0, 0, 0, 0},
};

struct dvb_frontend *dib0090_register(struct dvb_frontend *fe, struct i2c_adapter *i2c, const struct dib0090_config *config)
{
        struct dib0090_state *st = kzalloc(sizeof(struct dib0090_state), GFP_KERNEL);
        if (st == NULL)
                return NULL;

        st->config = config;
        st->i2c = i2c;
        st->fe = fe;
        mutex_init(&st->i2c_buffer_lock);
        fe->tuner_priv = st;

        if (config->wbd == NULL)
                st->current_wbd_table = dib0090_wbd_table_default;
        else
                st->current_wbd_table = config->wbd;

        if (dib0090_reset(fe) != 0)
                goto free_mem;

        printk(KERN_INFO "DiB0090: successfully identified\n");
        memcpy(&fe->ops.tuner_ops, &dib0090_ops, sizeof(struct dvb_tuner_ops));

        return fe;
 free_mem:
        kfree(st);
        fe->tuner_priv = NULL;
        return NULL;
}

EXPORT_SYMBOL(dib0090_register);

struct dvb_frontend *dib0090_fw_register(struct dvb_frontend *fe, struct i2c_adapter *i2c, const struct dib0090_config *config)
{
        struct dib0090_fw_state *st = kzalloc(sizeof(struct dib0090_fw_state), GFP_KERNEL);
        if (st == NULL)
                return NULL;

        st->config = config;
        st->i2c = i2c;
        st->fe = fe;
        mutex_init(&st->i2c_buffer_lock);
        fe->tuner_priv = st;

        if (dib0090_fw_reset_digital(fe, st->config) != 0)
                goto free_mem;

        dprintk("DiB0090 FW: successfully identified");
        memcpy(&fe->ops.tuner_ops, &dib0090_fw_ops, sizeof(struct dvb_tuner_ops));

        return fe;
free_mem:
        kfree(st);
        fe->tuner_priv = NULL;
        return NULL;
}
EXPORT_SYMBOL(dib0090_fw_register);

MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
MODULE_AUTHOR("Olivier Grenie <olivier.grenie@dibcom.fr>");
MODULE_DESCRIPTION("Driver for the DiBcom 0090 base-band RF Tuner");
MODULE_LICENSE("GPL");