drivers/media/dvb/frontends/tda18271c2dd.c

/*
 * tda18271c2dd: Driver for the TDA18271C2 tuner
 *
 * Copyright (C) 2010 Digital Devices GmbH
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 only, as published by the Free Software Foundation.
 *
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/version.h>
#include <asm/div64.h>

#include "dvb_frontend.h"

struct SStandardParam {
	s32   m_IFFrequency;
	u32   m_BandWidth;
	u8    m_EP3_4_0;
	u8    m_EB22;
};

struct SMap {
	u32   m_Frequency;
	u8    m_Param;
};

struct SMapI {
	u32   m_Frequency;
	s32    m_Param;
};

struct SMap2 {
	u32   m_Frequency;
	u8    m_Param1;
	u8    m_Param2;
};

struct SRFBandMap {
	u32   m_RF_max;
	u32   m_RF1_Default;
	u32   m_RF2_Default;
	u32   m_RF3_Default;
};

enum ERegister
{
	ID = 0,
	TM,
	PL,
	EP1, EP2, EP3, EP4, EP5,
	CPD, CD1, CD2, CD3,
	MPD, MD1, MD2, MD3,
	EB1, EB2, EB3, EB4, EB5, EB6, EB7, EB8, EB9, EB10,
	EB11, EB12, EB13, EB14, EB15, EB16, EB17, EB18, EB19, EB20,
	EB21, EB22, EB23,
	NUM_REGS
};

struct tda_state {
	struct i2c_adapter *i2c;
	u8 adr;

	u32   m_Frequency;
	u32   IF;

	u8    m_IFLevelAnalog;
	u8    m_IFLevelDigital;
	u8    m_IFLevelDVBC;
	u8    m_IFLevelDVBT;

	u8    m_EP4;
	u8    m_EP3_Standby;

	bool  m_bMaster;

	s32   m_SettlingTime;

	u8    m_Regs[NUM_REGS];

	/* Tracking filter settings for band 0..6 */
	u32   m_RF1[7];
	s32   m_RF_A1[7];
	s32   m_RF_B1[7];
	u32   m_RF2[7];
	s32   m_RF_A2[7];
	s32   m_RF_B2[7];
	u32   m_RF3[7];

	u8    m_TMValue_RFCal;    /* Calibration temperatur */

	bool  m_bFMInput;         /* true to use Pin 8 for FM Radio */

};

static int PowerScan(struct tda_state *state,
		     u8 RFBand,u32 RF_in,
		     u32 * pRF_Out, bool *pbcal);

static int i2c_readn(struct i2c_adapter *adapter, u8 adr, u8 *data, int len)
{
	struct i2c_msg msgs[1] = {{.addr = adr,  .flags = I2C_M_RD,
				   .buf  = data, .len   = len}};
	return (i2c_transfer(adapter, msgs, 1) == 1) ? 0 : -1;
}

static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len)
{
	struct i2c_msg msg = {.addr = adr, .flags = 0,
			      .buf = data, .len = len};

	if (i2c_transfer(adap, &msg, 1) != 1) {
		printk("i2c_write error\n");
		return -1;
	}
	return 0;
}

static int WriteRegs(struct tda_state *state,
		     u8 SubAddr, u8 *Regs, u16 nRegs)
{
	u8 data[nRegs+1];

	data[0] = SubAddr;
	memcpy(data + 1, Regs, nRegs);
	return i2c_write(state->i2c, state->adr, data, nRegs+1);
}

static int WriteReg(struct tda_state *state, u8 SubAddr,u8 Reg)
{
	u8 msg[2] = {SubAddr, Reg};

	return i2c_write(state->i2c, state->adr, msg, 2);
}

static int Read(struct tda_state *state, u8 * Regs)
{
	return i2c_readn(state->i2c, state->adr, Regs, 16);
}

static int ReadExtented(struct tda_state *state, u8 * Regs)
{
	return i2c_readn(state->i2c, state->adr, Regs, NUM_REGS);
}

static int UpdateRegs(struct tda_state *state, u8 RegFrom,u8 RegTo)
{
	return WriteRegs(state, RegFrom,
			 &state->m_Regs[RegFrom], RegTo-RegFrom+1);
}
static int UpdateReg(struct tda_state *state, u8 Reg)
{
	return WriteReg(state, Reg,state->m_Regs[Reg]);
}

#include "tda18271c2dd_maps.h"

#undef CHK_ERROR
#define CHK_ERROR(s) if ((status = s) < 0) break

static void reset(struct tda_state *state)
{
	u32   ulIFLevelAnalog = 0;
	u32   ulIFLevelDigital = 2;
	u32   ulIFLevelDVBC = 7;
	u32   ulIFLevelDVBT = 6;
	u32   ulXTOut = 0;
	u32   ulStandbyMode = 0x06;    // Send in stdb, but leave osc on
	u32   ulSlave = 0;
	u32   ulFMInput = 0;
	u32   ulSettlingTime = 100;

	state->m_Frequency         = 0;
	state->m_SettlingTime = 100;
	state->m_IFLevelAnalog = (ulIFLevelAnalog & 0x07) << 2;
	state->m_IFLevelDigital = (ulIFLevelDigital & 0x07) << 2;
	state->m_IFLevelDVBC = (ulIFLevelDVBC & 0x07) << 2;
	state->m_IFLevelDVBT = (ulIFLevelDVBT & 0x07) << 2;

	state->m_EP4 = 0x20;
	if( ulXTOut != 0 ) state->m_EP4 |= 0x40;

	state->m_EP3_Standby = ((ulStandbyMode & 0x07) << 5) | 0x0F;
	state->m_bMaster = (ulSlave == 0);

	state->m_SettlingTime = ulSettlingTime;

	state->m_bFMInput = (ulFMInput == 2);
}

static bool SearchMap1(struct SMap Map[],
		       u32 Frequency, u8 *pParam)
{
	int i = 0;

	while ((Map[i].m_Frequency != 0) && (Frequency > Map[i].m_Frequency) )
		i += 1;
	if (Map[i].m_Frequency == 0)
		return false;
	*pParam = Map[i].m_Param;
	return true;
}

static bool SearchMap2(struct SMapI Map[],
		       u32 Frequency, s32 *pParam)
{
	int i = 0;

	while ((Map[i].m_Frequency != 0) &&
	       (Frequency > Map[i].m_Frequency) )
		i += 1;
	if (Map[i].m_Frequency == 0)
		return false;
	*pParam = Map[i].m_Param;
	return true;
}

static bool SearchMap3(struct SMap2 Map[],u32 Frequency,
		       u8 *pParam1, u8 *pParam2)
{
	int i = 0;

	while ((Map[i].m_Frequency != 0) &&
	       (Frequency > Map[i].m_Frequency) )
		i += 1;
	if (Map[i].m_Frequency == 0)
		return false;
	*pParam1 = Map[i].m_Param1;
	*pParam2 = Map[i].m_Param2;
	return true;
}

static bool SearchMap4(struct SRFBandMap Map[],
		       u32 Frequency, u8 *pRFBand)
{
	int i = 0;

	while (i < 7 && (Frequency > Map[i].m_RF_max))
		i += 1;
	if (i == 7)
		return false;
	*pRFBand = i;
	return true;
}

static int ThermometerRead(struct tda_state *state, u8 *pTM_Value)
{
	int status = 0;

	do {
		u8 Regs[16];
		state->m_Regs[TM] |= 0x10;
		CHK_ERROR(UpdateReg(state,TM));
		CHK_ERROR(Read(state,Regs));
		if( ( (Regs[TM] & 0x0F) == 0 && (Regs[TM] & 0x20) == 0x20 ) ||
		    ( (Regs[TM] & 0x0F) == 8 && (Regs[TM] & 0x20) == 0x00 ) ) {
			state->m_Regs[TM] ^= 0x20;
			CHK_ERROR(UpdateReg(state,TM));
			msleep(10);
			CHK_ERROR(Read(state,Regs));
		}
		*pTM_Value = (Regs[TM] & 0x20 ) ? m_Thermometer_Map_2[Regs[TM] & 0x0F] :
			m_Thermometer_Map_1[Regs[TM] & 0x0F] ;
		state->m_Regs[TM] &= ~0x10;        // Thermometer off
		CHK_ERROR(UpdateReg(state,TM));
		state->m_Regs[EP4] &= ~0x03;       // CAL_mode = 0 ?????????
		CHK_ERROR(UpdateReg(state,EP4));
	} while(0);

	return status;
}

static int StandBy(struct tda_state *state)
{
	int status = 0;
	do {
		state->m_Regs[EB12] &= ~0x20;  // PD_AGC1_Det = 0
		CHK_ERROR(UpdateReg(state,EB12));
		state->m_Regs[EB18] &= ~0x83;  // AGC1_loop_off = 0, AGC1_Gain = 6 dB
		CHK_ERROR(UpdateReg(state,EB18));
		state->m_Regs[EB21] |= 0x03; // AGC2_Gain = -6 dB
		state->m_Regs[EP3] = state->m_EP3_Standby;
		CHK_ERROR(UpdateReg(state,EP3));
		state->m_Regs[EB23] &= ~0x06; // ForceLP_Fc2_En = 0, LP_Fc[2] = 0
		CHK_ERROR(UpdateRegs(state,EB21,EB23));
	} while(0);
	return status;
}

static int CalcMainPLL(struct tda_state *state, u32 freq)
{

	u8  PostDiv;
	u8  Div;
	u64 OscFreq;
	u32 MainDiv;

	if (!SearchMap3(m_Main_PLL_Map, freq, &PostDiv, &Div)) {
		return -EINVAL;
	}

	OscFreq = (u64) freq * (u64) Div;
	OscFreq *= (u64) 16384;
	do_div(OscFreq, (u64)16000000);
	MainDiv = OscFreq;

	state->m_Regs[MPD] = PostDiv & 0x77;
	state->m_Regs[MD1] = ((MainDiv >> 16) & 0x7F);
	state->m_Regs[MD2] = ((MainDiv >>  8) & 0xFF);
	state->m_Regs[MD3] = ((MainDiv      ) & 0xFF);

	return UpdateRegs(state, MPD, MD3);
}

static int CalcCalPLL(struct tda_state *state, u32 freq)
{
	//KdPrintEx((MSG_TRACE " - " __FUNCTION__ "(%d)\n",freq));

	u8 PostDiv;
	u8 Div;
	u64 OscFreq;
	u32 CalDiv;

	if( !SearchMap3(m_Cal_PLL_Map,freq,&PostDiv,&Div) )
	{
		return -EINVAL;
	}

	OscFreq = (u64)freq * (u64)Div;
	//CalDiv = u32( OscFreq * 16384 / 16000000 );
	OscFreq*=(u64)16384;
	do_div(OscFreq, (u64)16000000);
	CalDiv=OscFreq;

	state->m_Regs[CPD] = PostDiv;
	state->m_Regs[CD1] = ((CalDiv >> 16) & 0xFF);
	state->m_Regs[CD2] = ((CalDiv >>  8) & 0xFF);
	state->m_Regs[CD3] = ((CalDiv      ) & 0xFF);

	return UpdateRegs(state,CPD,CD3);
}

static int CalibrateRF(struct tda_state *state,
		       u8 RFBand,u32 freq, s32 * pCprog)
{
	//KdPrintEx((MSG_TRACE " - " __FUNCTION__ " ID = %02x\n",state->m_Regs[ID]));
	int status = 0;
	u8 Regs[NUM_REGS];
	do {
		u8 BP_Filter=0;
		u8 GainTaper=0;
		u8 RFC_K=0;
		u8 RFC_M=0;

		state->m_Regs[EP4] &= ~0x03; // CAL_mode = 0
		CHK_ERROR(UpdateReg(state,EP4));
		state->m_Regs[EB18] |= 0x03;  // AGC1_Gain = 3
		CHK_ERROR(UpdateReg(state,EB18));

		// Switching off LT (as datasheet says) causes calibration on C1 to fail
		// (Readout of Cprog is allways 255)
		if( state->m_Regs[ID] != 0x83 )    // C1: ID == 83, C2: ID == 84
		{
			state->m_Regs[EP3] |= 0x40; // SM_LT = 1
		}

		if( ! ( SearchMap1(m_BP_Filter_Map,freq,&BP_Filter) &&
			SearchMap1(m_GainTaper_Map,freq,&GainTaper) &&
			SearchMap3(m_KM_Map,freq,&RFC_K,&RFC_M)) )
		{
			return -EINVAL;
		}

		state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | BP_Filter;
		state->m_Regs[EP2] = (RFBand << 5) | GainTaper;

		state->m_Regs[EB13] = (state->m_Regs[EB13] & ~0x7C) | (RFC_K << 4) | (RFC_M << 2);

		CHK_ERROR(UpdateRegs(state,EP1,EP3));
		CHK_ERROR(UpdateReg(state,EB13));

		state->m_Regs[EB4] |= 0x20;    // LO_ForceSrce = 1
		CHK_ERROR(UpdateReg(state,EB4));

		state->m_Regs[EB7] |= 0x20;    // CAL_ForceSrce = 1
		CHK_ERROR(UpdateReg(state,EB7));

		state->m_Regs[EB14] = 0; // RFC_Cprog = 0
		CHK_ERROR(UpdateReg(state,EB14));

		state->m_Regs[EB20] &= ~0x20;  // ForceLock = 0;
		CHK_ERROR(UpdateReg(state,EB20));

		state->m_Regs[EP4] |= 0x03;  // CAL_Mode = 3
		CHK_ERROR(UpdateRegs(state,EP4,EP5));

		CHK_ERROR(CalcCalPLL(state,freq));
		CHK_ERROR(CalcMainPLL(state,freq + 1000000));

		msleep(5);
		CHK_ERROR(UpdateReg(state,EP2));
		CHK_ERROR(UpdateReg(state,EP1));
		CHK_ERROR(UpdateReg(state,EP2));
		CHK_ERROR(UpdateReg(state,EP1));

		state->m_Regs[EB4] &= ~0x20;    // LO_ForceSrce = 0
		CHK_ERROR(UpdateReg(state,EB4));

		state->m_Regs[EB7] &= ~0x20;    // CAL_ForceSrce = 0
		CHK_ERROR(UpdateReg(state,EB7));
		msleep(10);

		state->m_Regs[EB20] |= 0x20;  // ForceLock = 1;
		CHK_ERROR(UpdateReg(state,EB20));
		msleep(60);

		state->m_Regs[EP4] &= ~0x03;  // CAL_Mode = 0
		state->m_Regs[EP3] &= ~0x40; // SM_LT = 0
		state->m_Regs[EB18] &= ~0x03;  // AGC1_Gain = 0
		CHK_ERROR(UpdateReg(state,EB18));
		CHK_ERROR(UpdateRegs(state,EP3,EP4));
		CHK_ERROR(UpdateReg(state,EP1));

		CHK_ERROR(ReadExtented(state,Regs));

		*pCprog = Regs[EB14];
		//KdPrintEx((MSG_TRACE " - " __FUNCTION__ " Cprog = %d\n",Regs[EB14]));

	} while(0);
	return status;
}

static int RFTrackingFiltersInit(struct tda_state *state,
				 u8 RFBand)
{
	//KdPrintEx((MSG_TRACE " - " __FUNCTION__ "\n"));
	int status = 0;

	u32   RF1 = m_RF_Band_Map[RFBand].m_RF1_Default;
	u32   RF2 = m_RF_Band_Map[RFBand].m_RF2_Default;
	u32   RF3 = m_RF_Band_Map[RFBand].m_RF3_Default;
	bool    bcal = false;

	s32    Cprog_cal1 = 0;
	s32    Cprog_table1 = 0;
	s32    Cprog_cal2 = 0;
	s32    Cprog_table2 = 0;
	s32    Cprog_cal3 = 0;
	s32    Cprog_table3 = 0;

	state->m_RF_A1[RFBand] = 0;
	state->m_RF_B1[RFBand] = 0;
	state->m_RF_A2[RFBand] = 0;
	state->m_RF_B2[RFBand] = 0;

	do {
		CHK_ERROR(PowerScan(state,RFBand,RF1,&RF1,&bcal));
		if( bcal ) {
			CHK_ERROR(CalibrateRF(state,RFBand,RF1,&Cprog_cal1));
		}
		SearchMap2(m_RF_Cal_Map,RF1,&Cprog_table1);
		if( !bcal ) {
			Cprog_cal1 = Cprog_table1;
		}
		state->m_RF_B1[RFBand] = Cprog_cal1 - Cprog_table1;
		//state->m_RF_A1[RF_Band] = ????

		if( RF2 == 0 ) break;

		CHK_ERROR(PowerScan(state,RFBand,RF2,&RF2,&bcal));
		if( bcal ) {
			CHK_ERROR(CalibrateRF(state,RFBand,RF2,&Cprog_cal2));
		}
		SearchMap2(m_RF_Cal_Map,RF2,&Cprog_table2);
		if( !bcal )
		{
			Cprog_cal2 = Cprog_table2;
		}

		state->m_RF_A1[RFBand] =
			(Cprog_cal2 - Cprog_table2 - Cprog_cal1 + Cprog_table1) /
			((s32)(RF2)-(s32)(RF1));

		if( RF3 == 0 ) break;

		CHK_ERROR(PowerScan(state,RFBand,RF3,&RF3,&bcal));
		if( bcal )
		{
			CHK_ERROR(CalibrateRF(state,RFBand,RF3,&Cprog_cal3));
		}
		SearchMap2(m_RF_Cal_Map,RF3,&Cprog_table3);
		if( !bcal )
		{
			Cprog_cal3 = Cprog_table3;
		}
		state->m_RF_A2[RFBand] = (Cprog_cal3 - Cprog_table3 - Cprog_cal2 + Cprog_table2) / ((s32)(RF3)-(s32)(RF2));
		state->m_RF_B2[RFBand] = Cprog_cal2 - Cprog_table2;

	} while(0);

	state->m_RF1[RFBand] = RF1;
	state->m_RF2[RFBand] = RF2;
	state->m_RF3[RFBand] = RF3;

#if 0
	printk("%s %d RF1 = %d A1 = %d B1 = %d RF2 = %d A2 = %d B2 = %d RF3 = %d\n", __FUNCTION__,
	       RFBand,RF1,state->m_RF_A1[RFBand],state->m_RF_B1[RFBand],RF2,
	       state->m_RF_A2[RFBand],state->m_RF_B2[RFBand],RF3);
#endif

	return status;
}

static int PowerScan(struct tda_state *state,
		     u8 RFBand,u32 RF_in, u32 * pRF_Out, bool *pbcal)
{
    //KdPrintEx((MSG_TRACE " - " __FUNCTION__ "(%d,%d)\n",RFBand,RF_in));
    int status = 0;
    do {
	    u8   Gain_Taper=0;
	    s32  RFC_Cprog=0;
	    u8   CID_Target=0;
	    u8   CountLimit=0;
	    u32  freq_MainPLL;
	    u8   Regs[NUM_REGS];
	    u8   CID_Gain;
	    s32  Count = 0;
	    int  sign  = 1;
	    bool wait = false;

	    if( ! (SearchMap2(m_RF_Cal_Map,RF_in,&RFC_Cprog) &&
		   SearchMap1(m_GainTaper_Map,RF_in,&Gain_Taper) &&
		   SearchMap3(m_CID_Target_Map,RF_in,&CID_Target,&CountLimit) )) {
		    printk("%s Search map failed\n", __FUNCTION__);
		    return -EINVAL;
	    }

	    state->m_Regs[EP2] = (RFBand << 5) | Gain_Taper;
	    state->m_Regs[EB14] = (RFC_Cprog);
	    CHK_ERROR(UpdateReg(state,EP2));
	    CHK_ERROR(UpdateReg(state,EB14));

	    freq_MainPLL = RF_in + 1000000;
	    CHK_ERROR(CalcMainPLL(state,freq_MainPLL));
	    msleep(5);
	    state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x03) | 1;    // CAL_mode = 1
	    CHK_ERROR(UpdateReg(state,EP4));
	    CHK_ERROR(UpdateReg(state,EP2));  // Launch power measurement
	    CHK_ERROR(ReadExtented(state,Regs));
	    CID_Gain = Regs[EB10] & 0x3F;
	    state->m_Regs[ID] = Regs[ID];  // Chip version, (needed for C1 workarround in CalibrateRF )

	    *pRF_Out = RF_in;

	    while( CID_Gain < CID_Target ) {
		    freq_MainPLL = RF_in + sign * Count + 1000000;
		    CHK_ERROR(CalcMainPLL(state,freq_MainPLL));
		    msleep( wait ? 5 : 1 );
		    wait = false;
		    CHK_ERROR(UpdateReg(state,EP2));  // Launch power measurement
		    CHK_ERROR(ReadExtented(state,Regs));
		    CID_Gain = Regs[EB10] & 0x3F;
		    Count += 200000;

		    if( Count < CountLimit * 100000 ) continue;
		    if( sign < 0 ) break;

		    sign = -sign;
		    Count = 200000;
		    wait = true;
	    }
	    CHK_ERROR(status);
	    if( CID_Gain >= CID_Target )
	    {
		    *pbcal = true;
		    *pRF_Out = freq_MainPLL - 1000000;
	    }
	    else
	    {
		    *pbcal = false;
	    }
    } while(0);
    //KdPrintEx((MSG_TRACE " - " __FUNCTION__ " Found = %d RF = %d\n",*pbcal,*pRF_Out));
    return status;
}

static int PowerScanInit(struct tda_state *state)
{
	//KdPrintEx((MSG_TRACE " - " __FUNCTION__ "\n"));
	int status = 0;
	do
	{
		state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | 0x12;
		state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x1F); // If level = 0, Cal mode = 0
		CHK_ERROR(UpdateRegs(state,EP3,EP4));
		state->m_Regs[EB18] = (state->m_Regs[EB18] & ~0x03 ); // AGC 1 Gain = 0
		CHK_ERROR(UpdateReg(state,EB18));
		state->m_Regs[EB21] = (state->m_Regs[EB21] & ~0x03 ); // AGC 2 Gain = 0 (Datasheet = 3)
		state->m_Regs[EB23] = (state->m_Regs[EB23] | 0x06 ); // ForceLP_Fc2_En = 1, LPFc[2] = 1
		CHK_ERROR(UpdateRegs(state,EB21,EB23));
	} while(0);
	return status;
}

static int CalcRFFilterCurve(struct tda_state *state)
{
	//KdPrintEx((MSG_TRACE " - " __FUNCTION__ "\n"));
	int status = 0;
	do
	{
		msleep(200);      // Temperature stabilisation
		CHK_ERROR(PowerScanInit(state));
		CHK_ERROR(RFTrackingFiltersInit(state,0));
		CHK_ERROR(RFTrackingFiltersInit(state,1));
		CHK_ERROR(RFTrackingFiltersInit(state,2));
		CHK_ERROR(RFTrackingFiltersInit(state,3));
		CHK_ERROR(RFTrackingFiltersInit(state,4));
		CHK_ERROR(RFTrackingFiltersInit(state,5));
		CHK_ERROR(RFTrackingFiltersInit(state,6));
		CHK_ERROR(ThermometerRead(state,&state->m_TMValue_RFCal)); // also switches off Cal mode !!!
	} while(0);

	return status;
}

static int FixedContentsI2CUpdate(struct tda_state *state)
{
	static u8 InitRegs[] = {
		0x08,0x80,0xC6,
		0xDF,0x16,0x60,0x80,
		0x80,0x00,0x00,0x00,
		0x00,0x00,0x00,0x00,
		0xFC,0x01,0x84,0x41,
		0x01,0x84,0x40,0x07,
		0x00,0x00,0x96,0x3F,
		0xC1,0x00,0x8F,0x00,
		0x00,0x8C,0x00,0x20,
		0xB3,0x48,0xB0,
	};
	int status = 0;
	memcpy(&state->m_Regs[TM],InitRegs,EB23-TM+1);
	do {
		CHK_ERROR(UpdateRegs(state,TM,EB23));

		// AGC1 gain setup
		state->m_Regs[EB17] = 0x00;
		CHK_ERROR(UpdateReg(state,EB17));
		state->m_Regs[EB17] = 0x03;
		CHK_ERROR(UpdateReg(state,EB17));
		state->m_Regs[EB17] = 0x43;
		CHK_ERROR(UpdateReg(state,EB17));
		state->m_Regs[EB17] = 0x4C;
		CHK_ERROR(UpdateReg(state,EB17));

		// IRC Cal Low band
		state->m_Regs[EP3] = 0x1F;
		state->m_Regs[EP4] = 0x66;
		state->m_Regs[EP5] = 0x81;
		state->m_Regs[CPD] = 0xCC;
		state->m_Regs[CD1] = 0x6C;
		state->m_Regs[CD2] = 0x00;
		state->m_Regs[CD3] = 0x00;
		state->m_Regs[MPD] = 0xC5;
		state->m_Regs[MD1] = 0x77;
		state->m_Regs[MD2] = 0x08;
		state->m_Regs[MD3] = 0x00;
		CHK_ERROR(UpdateRegs(state,EP2,MD3)); // diff between sw and datasheet (ep3-md3)

		//state->m_Regs[EB4] = 0x61;          // missing in sw
		//CHK_ERROR(UpdateReg(state,EB4));
		//msleep(1);
		//state->m_Regs[EB4] = 0x41;
		//CHK_ERROR(UpdateReg(state,EB4));

		msleep(5);
		CHK_ERROR(UpdateReg(state,EP1));
		msleep(5);

		state->m_Regs[EP5] = 0x85;
		state->m_Regs[CPD] = 0xCB;
		state->m_Regs[CD1] = 0x66;
		state->m_Regs[CD2] = 0x70;
		CHK_ERROR(UpdateRegs(state,EP3,CD3));
		msleep(5);
		CHK_ERROR(UpdateReg(state,EP2));
		msleep(30);

		// IRC Cal mid band
		state->m_Regs[EP5] = 0x82;
		state->m_Regs[CPD] = 0xA8;
		state->m_Regs[CD2] = 0x00;
		state->m_Regs[MPD] = 0xA1; // Datasheet = 0xA9
		state->m_Regs[MD1] = 0x73;
		state->m_Regs[MD2] = 0x1A;
		CHK_ERROR(UpdateRegs(state,EP3,MD3));

		msleep(5);
		CHK_ERROR(UpdateReg(state,EP1));
		msleep(5);

		state->m_Regs[EP5] = 0x86;
		state->m_Regs[CPD] = 0xA8;
		state->m_Regs[CD1] = 0x66;
		state->m_Regs[CD2] = 0xA0;
		CHK_ERROR(UpdateRegs(state,EP3,CD3));
		msleep(5);
		CHK_ERROR(UpdateReg(state,EP2));
		msleep(30);

		// IRC Cal high band
		state->m_Regs[EP5] = 0x83;
		state->m_Regs[CPD] = 0x98;
		state->m_Regs[CD1] = 0x65;
		state->m_Regs[CD2] = 0x00;
		state->m_Regs[MPD] = 0x91;  // Datasheet = 0x91
		state->m_Regs[MD1] = 0x71;
		state->m_Regs[MD2] = 0xCD;
		CHK_ERROR(UpdateRegs(state,EP3,MD3));
		msleep(5);
		CHK_ERROR(UpdateReg(state,EP1));
		msleep(5);
		state->m_Regs[EP5] = 0x87;
		state->m_Regs[CD1] = 0x65;
		state->m_Regs[CD2] = 0x50;
		CHK_ERROR(UpdateRegs(state,EP3,CD3));
		msleep(5);
		CHK_ERROR(UpdateReg(state,EP2));
		msleep(30);

		// Back to normal
		state->m_Regs[EP4] = 0x64;
		CHK_ERROR(UpdateReg(state,EP4));
		CHK_ERROR(UpdateReg(state,EP1));

	} while(0);
	return status;
}

static int InitCal(struct tda_state *state)
{
	int status = 0;

	do
	{
		CHK_ERROR(FixedContentsI2CUpdate(state));
		CHK_ERROR(CalcRFFilterCurve(state));
		CHK_ERROR(StandBy(state));
		//m_bInitDone = true;
	} while(0);
	return status;
};

static int RFTrackingFiltersCorrection(struct tda_state *state,
				       u32 Frequency)
{
	int status = 0;
	s32 Cprog_table;
	u8 RFBand;
	u8 dCoverdT;

	if( !SearchMap2(m_RF_Cal_Map,Frequency,&Cprog_table) ||
	    !SearchMap4(m_RF_Band_Map,Frequency,&RFBand) ||
	    !SearchMap1(m_RF_Cal_DC_Over_DT_Map,Frequency,&dCoverdT) )
	{
		return -EINVAL;
	}

	do
	{
		u8 TMValue_Current;
		u32   RF1 = state->m_RF1[RFBand];
		u32   RF2 = state->m_RF1[RFBand];
		u32   RF3 = state->m_RF1[RFBand];
		s32    RF_A1 = state->m_RF_A1[RFBand];
		s32    RF_B1 = state->m_RF_B1[RFBand];
		s32    RF_A2 = state->m_RF_A2[RFBand];
		s32    RF_B2 = state->m_RF_B2[RFBand];
		s32 Capprox = 0;
		int TComp;

		state->m_Regs[EP3] &= ~0xE0;  // Power up
		CHK_ERROR(UpdateReg(state,EP3));

		CHK_ERROR(ThermometerRead(state,&TMValue_Current));

		if( RF3 == 0 || Frequency < RF2 )
		{
			Capprox = RF_A1 * ((s32)(Frequency) - (s32)(RF1)) + RF_B1 + Cprog_table;
		}
		else
		{
			Capprox = RF_A2 * ((s32)(Frequency) - (s32)(RF2)) + RF_B2 + Cprog_table;
		}

		TComp = (int)(dCoverdT) * ((int)(TMValue_Current) - (int)(state->m_TMValue_RFCal))/1000;

		Capprox += TComp;

		if( Capprox < 0 ) Capprox = 0;
		else if( Capprox > 255 ) Capprox = 255;


		// TODO Temperature compensation. There is defenitely a scale factor
		//      missing in the datasheet, so leave it out for now.
		state->m_Regs[EB14] = (Capprox );

		CHK_ERROR(UpdateReg(state,EB14));

	} while(0);
	return status;
}

static int ChannelConfiguration(struct tda_state *state,
				u32 Frequency, int Standard)
{

	s32 IntermediateFrequency = m_StandardTable[Standard].m_IFFrequency;
	int status = 0;

	u8 BP_Filter = 0;
	u8 RF_Band = 0;
	u8 GainTaper = 0;
	u8 IR_Meas;

	state->IF=IntermediateFrequency;
	//printk("%s Freq = %d Standard = %d IF = %d\n",__FUNCTION__,Frequency,Standard,IntermediateFrequency);
	// get values from tables

	if(! ( SearchMap1(m_BP_Filter_Map,Frequency,&BP_Filter) &&
	       SearchMap1(m_GainTaper_Map,Frequency,&GainTaper) &&
	       SearchMap1(m_IR_Meas_Map,Frequency,&IR_Meas) &&
	       SearchMap4(m_RF_Band_Map,Frequency,&RF_Band) ) )
	{
		printk("%s SearchMap failed\n", __FUNCTION__);
		return -EINVAL;
	}

	do
	{
		state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | m_StandardTable[Standard].m_EP3_4_0;
		state->m_Regs[EP3] &= ~0x04;   // switch RFAGC to high speed mode

		// m_EP4 default for XToutOn, CAL_Mode (0)
		state->m_Regs[EP4] = state->m_EP4 | ((Standard > HF_AnalogMax )? state->m_IFLevelDigital : state->m_IFLevelAnalog );
		//state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital;
		if( Standard <= HF_AnalogMax ) state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelAnalog;
		else if( Standard <= HF_ATSC      ) state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBT;
		else if( Standard <= HF_DVBC      ) state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBC;
		else                                state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital;

		if( (Standard == HF_FM_Radio) && state->m_bFMInput ) state->m_Regs[EP4] |= 80;

		state->m_Regs[MPD] &= ~0x80;
		if( Standard > HF_AnalogMax ) state->m_Regs[MPD] |= 0x80; // Add IF_notch for digital

		state->m_Regs[EB22] = m_StandardTable[Standard].m_EB22;

		// Note: This is missing from flowchart in TDA18271 specification ( 1.5 MHz cutoff for FM )
		if( Standard == HF_FM_Radio ) state->m_Regs[EB23] |=  0x06; // ForceLP_Fc2_En = 1, LPFc[2] = 1
		else                          state->m_Regs[EB23] &= ~0x06; // ForceLP_Fc2_En = 0, LPFc[2] = 0

		CHK_ERROR(UpdateRegs(state,EB22,EB23));

		state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | 0x40 | BP_Filter;   // Dis_Power_level = 1, Filter
		state->m_Regs[EP5] = (state->m_Regs[EP5] & ~0x07) | IR_Meas;
		state->m_Regs[EP2] = (RF_Band << 5) | GainTaper;

		state->m_Regs[EB1] = (state->m_Regs[EB1] & ~0x07) |
			(state->m_bMaster ? 0x04 : 0x00); // CALVCO_FortLOn = MS
		// AGC1_always_master = 0
		// AGC_firstn = 0
		CHK_ERROR(UpdateReg(state,EB1));

		if( state->m_bMaster )
		{
			CHK_ERROR(CalcMainPLL(state,Frequency + IntermediateFrequency));
			CHK_ERROR(UpdateRegs(state,TM,EP5));
			state->m_Regs[EB4] |= 0x20;    // LO_forceSrce = 1
			CHK_ERROR(UpdateReg(state,EB4));
			msleep(1);
			state->m_Regs[EB4] &= ~0x20;   // LO_forceSrce = 0
			CHK_ERROR(UpdateReg(state,EB4));
		}
		else
		{
			u8 PostDiv;
			u8 Div;
			CHK_ERROR(CalcCalPLL(state,Frequency + IntermediateFrequency));

			SearchMap3(m_Cal_PLL_Map,Frequency + IntermediateFrequency,&PostDiv,&Div);
			state->m_Regs[MPD] = (state->m_Regs[MPD] & ~0x7F) | (PostDiv & 0x77);
			CHK_ERROR(UpdateReg(state,MPD));
			CHK_ERROR(UpdateRegs(state,TM,EP5));

			state->m_Regs[EB7] |= 0x20;    // CAL_forceSrce = 1
			CHK_ERROR(UpdateReg(state,EB7));
			msleep(1);
			state->m_Regs[EB7] &= ~0x20;   // CAL_forceSrce = 0
			CHK_ERROR(UpdateReg(state,EB7));
		}
		msleep(20);
		if( Standard != HF_FM_Radio )
		{
			state->m_Regs[EP3] |= 0x04;    // RFAGC to normal mode
		}
		CHK_ERROR(UpdateReg(state,EP3));

	} while(0);
	return status;
}

static int sleep(struct dvb_frontend* fe)
{
	struct tda_state *state = fe->tuner_priv;

	StandBy(state);
	return 0;
}

static int init(struct dvb_frontend* fe)
{
	//struct tda_state *state = fe->tuner_priv;
	return 0;
}

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

static int set_params(struct dvb_frontend *fe,
		      struct dvb_frontend_parameters *params)
{
	struct tda_state *state = fe->tuner_priv;
	int status = 0;
	int Standard;

	state->m_Frequency = params->frequency;

	if (fe->ops.info.type == FE_OFDM)
		switch (params->u.ofdm.bandwidth) {
		case BANDWIDTH_6_MHZ:
			Standard = HF_DVBT_6MHZ;
			break;
		case BANDWIDTH_7_MHZ:
			Standard = HF_DVBT_7MHZ;
			break;
		default:
		case BANDWIDTH_8_MHZ:
			Standard = HF_DVBT_8MHZ;
			break;
		}
	else if (fe->ops.info.type == FE_QAM) {
		Standard = HF_DVBC_8MHZ;
	} else
		return -EINVAL;
	do {
		CHK_ERROR(RFTrackingFiltersCorrection(state,params->frequency));
		CHK_ERROR(ChannelConfiguration(state,params->frequency,Standard));

		msleep(state->m_SettlingTime);  // Allow AGC's to settle down
	} while(0);
	return status;
}

#if 0
static int GetSignalStrength(s32 * pSignalStrength,u32 RFAgc,u32 IFAgc)
{
	if( IFAgc < 500 ) {
		// Scale this from 0 to 50000
		*pSignalStrength = IFAgc * 100;
	} else {
		// Scale range 500-1500 to 50000-80000
		*pSignalStrength = 50000 + (IFAgc - 500) * 30;
	}

	return 0;
}
#endif

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

	*frequency = state->IF;
	return 0;
}

static int get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
	//struct tda_state *state = fe->tuner_priv;
	//*bandwidth = priv->bandwidth;
	return 0;
}


static struct dvb_tuner_ops tuner_ops = {
	.info = {
		.name = "NXP TDA18271C2D",
		.frequency_min  =  47125000,
		.frequency_max  = 865000000,
		.frequency_step =     62500
	},
	.init              = init,
	.sleep             = sleep,
	.set_params        = set_params,
	.release           = release,
	.get_frequency     = get_frequency,
	.get_bandwidth     = get_bandwidth,
};

struct dvb_frontend *tda18271c2dd_attach(struct dvb_frontend *fe,
					 struct i2c_adapter *i2c, u8 adr)
{
	struct tda_state *state;

	state = kzalloc(sizeof(struct tda_state), GFP_KERNEL);
	if (!state)
		return NULL;

	fe->tuner_priv = state;
	state->adr = adr;
	state->i2c = i2c;
	memcpy(&fe->ops.tuner_ops, &tuner_ops, sizeof(struct dvb_tuner_ops));
	reset(state);
	InitCal(state);

	return fe;
}

EXPORT_SYMBOL_GPL(tda18271c2dd_attach);
MODULE_DESCRIPTION("TDA18271C2 driver");
MODULE_AUTHOR("DD");
MODULE_LICENSE("GPL");

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */