drivers/media/dvb-frontends/stv0900_priv.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * stv0900_priv.h
  *
  * Driver for ST STV0900 satellite demodulator IC.
  *
  * Copyright (C) ST Microelectronics.
  * Copyright (C) 2009 NetUP Inc.
  * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
  */

 #ifndef STV0900_PRIV_H
 #define STV0900_PRIV_H

 #include <linux/i2c.h>

 #define INRANGE(X, Y, Z) ((((X) <= (Y)) && ((Y) <= (Z))) \
 		|| (((Z) <= (Y)) && ((Y) <= (X))) ? 1 : 0)

 #ifndef MAKEWORD
 #define MAKEWORD(X, Y) (((X) << 8) + (Y))
 #endif

 #define LSB(X) (((X) & 0xFF))
 #define MSB(Y) (((Y) >> 8) & 0xFF)

 #ifndef TRUE
 #define TRUE (1 == 1)
 #endif
 #ifndef FALSE
 #define FALSE (!TRUE)
 #endif

 #define dprintk(args...) \
 	do { \
 		if (stvdebug) \
 			printk(KERN_DEBUG args); \
 	} while (0)

 #define STV0900_MAXLOOKUPSIZE 500
 #define STV0900_BLIND_SEARCH_AGC2_TH 700
 #define STV0900_BLIND_SEARCH_AGC2_TH_CUT30 1400
 #define IQPOWER_THRESHOLD  30

 /* One point of the lookup table */
 struct stv000_lookpoint {
 	s32 realval;/* real value */
 	s32 regval;/* binary value */
 };

 /* Lookup table definition */
 struct stv0900_table{
 	s32 size;/* Size of the lookup table */
 	struct stv000_lookpoint table[STV0900_MAXLOOKUPSIZE];/* Lookup table */
 };

 enum fe_stv0900_error {
 	STV0900_NO_ERROR = 0,
 	STV0900_INVALID_HANDLE,
 	STV0900_BAD_PARAMETER,
 	STV0900_I2C_ERROR,
 	STV0900_SEARCH_FAILED,
 };

 enum fe_stv0900_clock_type {
 	STV0900_USE_REGISTERS_DEFAULT,
 	STV0900_SERIAL_PUNCT_CLOCK,/*Serial punctured clock */
 	STV0900_SERIAL_CONT_CLOCK,/*Serial continues clock */
 	STV0900_PARALLEL_PUNCT_CLOCK,/*Parallel punctured clock */
 	STV0900_DVBCI_CLOCK/*Parallel continues clock : DVBCI */
 };

 enum fe_stv0900_search_state {
 	STV0900_SEARCH = 0,
 	STV0900_PLH_DETECTED,
 	STV0900_DVBS2_FOUND,
 	STV0900_DVBS_FOUND

 };

 enum fe_stv0900_ldpc_state {
 	STV0900_PATH1_OFF_PATH2_OFF = 0,
 	STV0900_PATH1_ON_PATH2_OFF = 1,
 	STV0900_PATH1_OFF_PATH2_ON = 2,
 	STV0900_PATH1_ON_PATH2_ON = 3
 };

 enum fe_stv0900_signal_type {
 	STV0900_NOAGC1 = 0,
 	STV0900_AGC1OK,
 	STV0900_NOTIMING,
 	STV0900_ANALOGCARRIER,
 	STV0900_TIMINGOK,
 	STV0900_NOAGC2,
 	STV0900_AGC2OK,
 	STV0900_NOCARRIER,
 	STV0900_CARRIEROK,
 	STV0900_NODATA,
 	STV0900_DATAOK,
 	STV0900_OUTOFRANGE,
 	STV0900_RANGEOK
 };

 enum fe_stv0900_demod_num {
 	STV0900_DEMOD_1,
 	STV0900_DEMOD_2
 };

 enum fe_stv0900_tracking_standard {
 	STV0900_DVBS1_STANDARD,/* Found Standard*/
 	STV0900_DVBS2_STANDARD,
 	STV0900_DSS_STANDARD,
 	STV0900_TURBOCODE_STANDARD,
 	STV0900_UNKNOWN_STANDARD
 };

 enum fe_stv0900_search_standard {
 	STV0900_AUTO_SEARCH,
 	STV0900_SEARCH_DVBS1,/* Search Standard*/
 	STV0900_SEARCH_DVBS2,
 	STV0900_SEARCH_DSS,
 	STV0900_SEARCH_TURBOCODE
 };

 enum fe_stv0900_search_algo {
 	STV0900_BLIND_SEARCH,/* offset freq and SR are Unknown */
 	STV0900_COLD_START,/* only the SR is known */
 	STV0900_WARM_START/* offset freq and SR are known */
 };

 enum fe_stv0900_modulation {
 	STV0900_QPSK,
 	STV0900_8PSK,
 	STV0900_16APSK,
 	STV0900_32APSK,
 	STV0900_UNKNOWN
 };

 enum fe_stv0900_modcode {
 	STV0900_DUMMY_PLF,
 	STV0900_QPSK_14,
 	STV0900_QPSK_13,
 	STV0900_QPSK_25,
 	STV0900_QPSK_12,
 	STV0900_QPSK_35,
 	STV0900_QPSK_23,
 	STV0900_QPSK_34,
 	STV0900_QPSK_45,
 	STV0900_QPSK_56,
 	STV0900_QPSK_89,
 	STV0900_QPSK_910,
 	STV0900_8PSK_35,
 	STV0900_8PSK_23,
 	STV0900_8PSK_34,
 	STV0900_8PSK_56,
 	STV0900_8PSK_89,
 	STV0900_8PSK_910,
 	STV0900_16APSK_23,
 	STV0900_16APSK_34,
 	STV0900_16APSK_45,
 	STV0900_16APSK_56,
 	STV0900_16APSK_89,
 	STV0900_16APSK_910,
 	STV0900_32APSK_34,
 	STV0900_32APSK_45,
 	STV0900_32APSK_56,
 	STV0900_32APSK_89,
 	STV0900_32APSK_910,
 	STV0900_MODCODE_UNKNOWN
 };

 enum fe_stv0900_fec {/*DVBS1, DSS and turbo code puncture rate*/
 	STV0900_FEC_1_2 = 0,
 	STV0900_FEC_2_3,
 	STV0900_FEC_3_4,
 	STV0900_FEC_4_5,/*for turbo code only*/
 	STV0900_FEC_5_6,
 	STV0900_FEC_6_7,/*for DSS only */
 	STV0900_FEC_7_8,
 	STV0900_FEC_8_9,/*for turbo code only*/
 	STV0900_FEC_UNKNOWN
 };

 enum fe_stv0900_frame_length {
 	STV0900_LONG_FRAME,
 	STV0900_SHORT_FRAME
 };

 enum fe_stv0900_pilot {
 	STV0900_PILOTS_OFF,
 	STV0900_PILOTS_ON
 };

 enum fe_stv0900_rolloff {
 	STV0900_35,
 	STV0900_25,
 	STV0900_20
 };

 enum fe_stv0900_search_iq {
 	STV0900_IQ_AUTO,
 	STV0900_IQ_AUTO_NORMAL_FIRST,
 	STV0900_IQ_FORCE_NORMAL,
 	STV0900_IQ_FORCE_SWAPPED
 };

 enum stv0900_iq_inversion {
 	STV0900_IQ_NORMAL,
 	STV0900_IQ_SWAPPED
 };

 enum fe_stv0900_diseqc_mode {
 	STV0900_22KHZ_Continues = 0,
 	STV0900_DISEQC_2_3_PWM = 2,
 	STV0900_DISEQC_3_3_PWM = 3,
 	STV0900_DISEQC_2_3_ENVELOP = 4,
 	STV0900_DISEQC_3_3_ENVELOP = 5
 };

 enum fe_stv0900_demod_mode {
 	STV0900_SINGLE = 0,
 	STV0900_DUAL
 };

 struct stv0900_init_params{
 	u32	dmd_ref_clk;/* Reference,Input clock for the demod in Hz */

 	/* Demodulator Type (single demod or dual demod) */
 	enum fe_stv0900_demod_mode	demod_mode;
 	enum fe_stv0900_rolloff		rolloff;
 	enum fe_stv0900_clock_type	path1_ts_clock;

 	u8	tun1_maddress;
 	int	tuner1_adc;
 	int	tuner1_type;

 	/* IQ from the tuner1 to the demod */
 	enum stv0900_iq_inversion	tun1_iq_inv;
 	enum fe_stv0900_clock_type	path2_ts_clock;

 	u8	tun2_maddress;
 	int	tuner2_adc;
 	int	tuner2_type;

 	/* IQ from the tuner2 to the demod */
 	enum stv0900_iq_inversion	tun2_iq_inv;
 	struct stv0900_reg		*ts_config;
 };

 struct stv0900_search_params {
 	enum fe_stv0900_demod_num	path;/* Path Used demod1 or 2 */

 	u32	frequency;/* Transponder frequency (in KHz) */
 	u32	symbol_rate;/* Transponder symbol rate  (in bds)*/
 	u32	search_range;/* Range of the search (in Hz) */

 	enum fe_stv0900_search_standard	standard;
 	enum fe_stv0900_modulation	modulation;
 	enum fe_stv0900_fec		fec;
 	enum fe_stv0900_modcode		modcode;
 	enum fe_stv0900_search_iq	iq_inversion;
 	enum fe_stv0900_search_algo	search_algo;

 };

 struct stv0900_signal_info {
 	int	locked;/* Transponder locked */
 	u32	frequency;/* Transponder frequency (in KHz) */
 	u32	symbol_rate;/* Transponder symbol rate  (in Mbds) */

 	enum fe_stv0900_tracking_standard	standard;
 	enum fe_stv0900_fec			fec;
 	enum fe_stv0900_modcode			modcode;
 	enum fe_stv0900_modulation		modulation;
 	enum fe_stv0900_pilot			pilot;
 	enum fe_stv0900_frame_length		frame_len;
 	enum stv0900_iq_inversion		spectrum;
 	enum fe_stv0900_rolloff			rolloff;

 	s32 Power;/* Power of the RF signal (dBm) */
 	s32 C_N;/* Carrier to noise ratio (dB x10)*/
 	u32 BER;/* Bit error rate (x10^7) */

 };

 struct stv0900_internal{
 	s32	quartz;
 	s32	mclk;
 	/* manual RollOff for DVBS1/DSS only */
 	enum fe_stv0900_rolloff		rolloff;
 	/* Demodulator use for single demod or for dual demod) */
 	enum fe_stv0900_demod_mode	demod_mode;

 	/*Demods */
 	s32	freq[2];
 	s32	bw[2];
 	s32	symbol_rate[2];
 	s32	srch_range[2];
 	/* for software/auto tuner */
 	int	tuner_type[2];

 	/* algorithm for search Blind, Cold or Warm*/
 	enum fe_stv0900_search_algo	srch_algo[2];
 	/* search standard: Auto, DVBS1/DSS only or DVBS2 only*/
 	enum fe_stv0900_search_standard	srch_standard[2];
 	/* inversion search : auto, auto norma first, normal or inverted */
 	enum fe_stv0900_search_iq	srch_iq_inv[2];
 	enum fe_stv0900_modcode		modcode[2];
 	enum fe_stv0900_modulation	modulation[2];
 	enum fe_stv0900_fec		fec[2];

 	struct stv0900_signal_info	result[2];
 	enum fe_stv0900_error		err[2];


 	struct i2c_adapter	*i2c_adap;
 	u8			i2c_addr;
 	u8			clkmode;/* 0 for CLKI, 2 for XTALI */
 	u8			chip_id;
 	struct stv0900_reg	*ts_config;
 	enum fe_stv0900_error	errs;
 	int dmds_used;
 };

 /* state for each demod */
 struct stv0900_state {
 	/* pointer for internal params, one for each pair of demods */
 	struct stv0900_internal		*internal;
 	struct i2c_adapter		*i2c_adap;
 	const struct stv0900_config	*config;
 	struct dvb_frontend		frontend;
 	int demod;
 };

 extern int stvdebug;

 extern s32 ge2comp(s32 a, s32 width);

 extern void stv0900_write_reg(struct stv0900_internal *i_params,
 				u16 reg_addr, u8 reg_data);

 extern u8 stv0900_read_reg(struct stv0900_internal *i_params,
 				u16 reg_addr);

 extern void stv0900_write_bits(struct stv0900_internal *i_params,
 				u32 label, u8 val);

 extern u8 stv0900_get_bits(struct stv0900_internal *i_params,
 				u32 label);

 extern int stv0900_get_demod_lock(struct stv0900_internal *i_params,
 				enum fe_stv0900_demod_num demod, s32 time_out);
 extern int stv0900_check_signal_presence(struct stv0900_internal *i_params,
 				enum fe_stv0900_demod_num demod);

 extern enum fe_stv0900_signal_type stv0900_algo(struct dvb_frontend *fe);

 extern void stv0900_set_tuner(struct dvb_frontend *fe, u32 frequency,
 				u32 bandwidth);
 extern void stv0900_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth);

 extern void stv0900_start_search(struct stv0900_internal *i_params,
 				enum fe_stv0900_demod_num demod);

 extern u8 stv0900_get_optim_carr_loop(s32 srate,
 				enum fe_stv0900_modcode modcode,
 				s32 pilot, u8 chip_id);

 extern u8 stv0900_get_optim_short_carr_loop(s32 srate,
 				enum fe_stv0900_modulation modulation,
 				u8 chip_id);

 extern void stv0900_stop_all_s2_modcod(struct stv0900_internal *i_params,
 				enum fe_stv0900_demod_num demod);

 extern void stv0900_activate_s2_modcod(struct stv0900_internal *i_params,
 				enum fe_stv0900_demod_num demod);

 extern void stv0900_activate_s2_modcod_single(struct stv0900_internal *i_params,
 				enum fe_stv0900_demod_num demod);

 extern enum
 fe_stv0900_tracking_standard stv0900_get_standard(struct dvb_frontend *fe,
 				enum fe_stv0900_demod_num demod);

 extern u32
 stv0900_get_freq_auto(struct stv0900_internal *intp, int demod);

 extern void
 stv0900_set_tuner_auto(struct stv0900_internal *intp, u32 Frequency,
 						u32 Bandwidth, int demod);

 #endif
	/* SPDX-License-Identifier: GPL-2.0-or-later */
	/*
	* stv0900_priv.h
	*
	* Driver for ST STV0900 satellite demodulator IC.
	*
	* Copyright (C) ST Microelectronics.
	* Copyright (C) 2009 NetUP Inc.
	* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
	*/

	#ifndef STV0900_PRIV_H
	#define STV0900_PRIV_H

	#include <linux/i2c.h>

	#define INRANGE(X, Y, Z) ((((X) <= (Y)) && ((Y) <= (Z))) \
	\|\| (((Z) <= (Y)) && ((Y) <= (X))) ? 1 : 0)

	#ifndef MAKEWORD
	#define MAKEWORD(X, Y) (((X) << 8) + (Y))
	#endif

	#define LSB(X) (((X) & 0xFF))
	#define MSB(Y) (((Y) >> 8) & 0xFF)

	#ifndef TRUE
	#define TRUE (1 == 1)
	#endif
	#ifndef FALSE
	#define FALSE (!TRUE)
	#endif

	#define dprintk(args...) \
	do { \
	if (stvdebug) \
	printk(KERN_DEBUG args); \
	} while (0)

	#define STV0900_MAXLOOKUPSIZE 500
	#define STV0900_BLIND_SEARCH_AGC2_TH 700
	#define STV0900_BLIND_SEARCH_AGC2_TH_CUT30 1400
	#define IQPOWER_THRESHOLD 30

	/* One point of the lookup table */
	struct stv000_lookpoint {
	s32 realval;/* real value */
	s32 regval;/* binary value */
	};

	/* Lookup table definition */
	struct stv0900_table{
	s32 size;/* Size of the lookup table */
	struct stv000_lookpoint table[STV0900_MAXLOOKUPSIZE];/* Lookup table */
	};

	enum fe_stv0900_error {
	STV0900_NO_ERROR = 0,
	STV0900_INVALID_HANDLE,
	STV0900_BAD_PARAMETER,
	STV0900_I2C_ERROR,
	STV0900_SEARCH_FAILED,
	};

	enum fe_stv0900_clock_type {
	STV0900_USE_REGISTERS_DEFAULT,
	STV0900_SERIAL_PUNCT_CLOCK,/Serial punctured clock /
	STV0900_SERIAL_CONT_CLOCK,/Serial continues clock /
	STV0900_PARALLEL_PUNCT_CLOCK,/Parallel punctured clock /
	STV0900_DVBCI_CLOCK/Parallel continues clock : DVBCI /
	};

	enum fe_stv0900_search_state {
	STV0900_SEARCH = 0,
	STV0900_PLH_DETECTED,
	STV0900_DVBS2_FOUND,
	STV0900_DVBS_FOUND

	};

	enum fe_stv0900_ldpc_state {
	STV0900_PATH1_OFF_PATH2_OFF = 0,
	STV0900_PATH1_ON_PATH2_OFF = 1,
	STV0900_PATH1_OFF_PATH2_ON = 2,
	STV0900_PATH1_ON_PATH2_ON = 3
	};

	enum fe_stv0900_signal_type {
	STV0900_NOAGC1 = 0,
	STV0900_AGC1OK,
	STV0900_NOTIMING,
	STV0900_ANALOGCARRIER,
	STV0900_TIMINGOK,
	STV0900_NOAGC2,
	STV0900_AGC2OK,
	STV0900_NOCARRIER,
	STV0900_CARRIEROK,
	STV0900_NODATA,
	STV0900_DATAOK,
	STV0900_OUTOFRANGE,
	STV0900_RANGEOK
	};

	enum fe_stv0900_demod_num {
	STV0900_DEMOD_1,
	STV0900_DEMOD_2
	};

	enum fe_stv0900_tracking_standard {
	STV0900_DVBS1_STANDARD,/* Found Standard*/
	STV0900_DVBS2_STANDARD,
	STV0900_DSS_STANDARD,
	STV0900_TURBOCODE_STANDARD,
	STV0900_UNKNOWN_STANDARD
	};

	enum fe_stv0900_search_standard {
	STV0900_AUTO_SEARCH,
	STV0900_SEARCH_DVBS1,/* Search Standard*/
	STV0900_SEARCH_DVBS2,
	STV0900_SEARCH_DSS,
	STV0900_SEARCH_TURBOCODE
	};

	enum fe_stv0900_search_algo {
	STV0900_BLIND_SEARCH,/* offset freq and SR are Unknown */
	STV0900_COLD_START,/* only the SR is known */
	STV0900_WARM_START/* offset freq and SR are known */
	};

	enum fe_stv0900_modulation {
	STV0900_QPSK,
	STV0900_8PSK,
	STV0900_16APSK,
	STV0900_32APSK,
	STV0900_UNKNOWN
	};

	enum fe_stv0900_modcode {
	STV0900_DUMMY_PLF,
	STV0900_QPSK_14,
	STV0900_QPSK_13,
	STV0900_QPSK_25,
	STV0900_QPSK_12,
	STV0900_QPSK_35,
	STV0900_QPSK_23,
	STV0900_QPSK_34,
	STV0900_QPSK_45,
	STV0900_QPSK_56,
	STV0900_QPSK_89,
	STV0900_QPSK_910,
	STV0900_8PSK_35,
	STV0900_8PSK_23,
	STV0900_8PSK_34,
	STV0900_8PSK_56,
	STV0900_8PSK_89,
	STV0900_8PSK_910,
	STV0900_16APSK_23,
	STV0900_16APSK_34,
	STV0900_16APSK_45,
	STV0900_16APSK_56,
	STV0900_16APSK_89,
	STV0900_16APSK_910,
	STV0900_32APSK_34,
	STV0900_32APSK_45,
	STV0900_32APSK_56,
	STV0900_32APSK_89,
	STV0900_32APSK_910,
	STV0900_MODCODE_UNKNOWN
	};

	enum fe_stv0900_fec {/DVBS1, DSS and turbo code puncture rate/
	STV0900_FEC_1_2 = 0,
	STV0900_FEC_2_3,
	STV0900_FEC_3_4,
	STV0900_FEC_4_5,/for turbo code only/
	STV0900_FEC_5_6,
	STV0900_FEC_6_7,/for DSS only /
	STV0900_FEC_7_8,
	STV0900_FEC_8_9,/for turbo code only/
	STV0900_FEC_UNKNOWN
	};

	enum fe_stv0900_frame_length {
	STV0900_LONG_FRAME,
	STV0900_SHORT_FRAME
	};

	enum fe_stv0900_pilot {
	STV0900_PILOTS_OFF,
	STV0900_PILOTS_ON
	};

	enum fe_stv0900_rolloff {
	STV0900_35,
	STV0900_25,
	STV0900_20
	};

	enum fe_stv0900_search_iq {
	STV0900_IQ_AUTO,
	STV0900_IQ_AUTO_NORMAL_FIRST,
	STV0900_IQ_FORCE_NORMAL,
	STV0900_IQ_FORCE_SWAPPED
	};

	enum stv0900_iq_inversion {
	STV0900_IQ_NORMAL,
	STV0900_IQ_SWAPPED
	};

	enum fe_stv0900_diseqc_mode {
	STV0900_22KHZ_Continues = 0,
	STV0900_DISEQC_2_3_PWM = 2,
	STV0900_DISEQC_3_3_PWM = 3,
	STV0900_DISEQC_2_3_ENVELOP = 4,
	STV0900_DISEQC_3_3_ENVELOP = 5
	};

	enum fe_stv0900_demod_mode {
	STV0900_SINGLE = 0,
	STV0900_DUAL
	};

	struct stv0900_init_params{
	u32 dmd_ref_clk;/* Reference,Input clock for the demod in Hz */

	/* Demodulator Type (single demod or dual demod) */
	enum fe_stv0900_demod_mode demod_mode;
	enum fe_stv0900_rolloff rolloff;
	enum fe_stv0900_clock_type path1_ts_clock;

	u8 tun1_maddress;
	int tuner1_adc;
	int tuner1_type;

	/* IQ from the tuner1 to the demod */
	enum stv0900_iq_inversion tun1_iq_inv;
	enum fe_stv0900_clock_type path2_ts_clock;

	u8 tun2_maddress;
	int tuner2_adc;
	int tuner2_type;

	/* IQ from the tuner2 to the demod */
	enum stv0900_iq_inversion tun2_iq_inv;
	struct stv0900_reg *ts_config;
	};

	struct stv0900_search_params {
	enum fe_stv0900_demod_num path;/* Path Used demod1 or 2 */

	u32 frequency;/* Transponder frequency (in KHz) */
	u32 symbol_rate;/* Transponder symbol rate (in bds)*/
	u32 search_range;/* Range of the search (in Hz) */

	enum fe_stv0900_search_standard standard;
	enum fe_stv0900_modulation modulation;
	enum fe_stv0900_fec fec;
	enum fe_stv0900_modcode modcode;
	enum fe_stv0900_search_iq iq_inversion;
	enum fe_stv0900_search_algo search_algo;

	};

	struct stv0900_signal_info {
	int locked;/* Transponder locked */
	u32 frequency;/* Transponder frequency (in KHz) */
	u32 symbol_rate;/* Transponder symbol rate (in Mbds) */

	enum fe_stv0900_tracking_standard standard;
	enum fe_stv0900_fec fec;
	enum fe_stv0900_modcode modcode;
	enum fe_stv0900_modulation modulation;
	enum fe_stv0900_pilot pilot;
	enum fe_stv0900_frame_length frame_len;
	enum stv0900_iq_inversion spectrum;
	enum fe_stv0900_rolloff rolloff;

	s32 Power;/* Power of the RF signal (dBm) */
	s32 C_N;/* Carrier to noise ratio (dB x10)*/
	u32 BER;/* Bit error rate (x10^7) */

	};

	struct stv0900_internal{
	s32 quartz;
	s32 mclk;
	/* manual RollOff for DVBS1/DSS only */
	enum fe_stv0900_rolloff rolloff;
	/* Demodulator use for single demod or for dual demod) */
	enum fe_stv0900_demod_mode demod_mode;

	/Demods /
	s32 freq[2];
	s32 bw[2];
	s32 symbol_rate[2];
	s32 srch_range[2];
	/* for software/auto tuner */
	int tuner_type[2];

	/* algorithm for search Blind, Cold or Warm*/
	enum fe_stv0900_search_algo srch_algo[2];
	/* search standard: Auto, DVBS1/DSS only or DVBS2 only*/
	enum fe_stv0900_search_standard srch_standard[2];
	/* inversion search : auto, auto norma first, normal or inverted */
	enum fe_stv0900_search_iq srch_iq_inv[2];
	enum fe_stv0900_modcode modcode[2];
	enum fe_stv0900_modulation modulation[2];
	enum fe_stv0900_fec fec[2];

	struct stv0900_signal_info result[2];
	enum fe_stv0900_error err[2];


	struct i2c_adapter *i2c_adap;
	u8 i2c_addr;
	u8 clkmode;/* 0 for CLKI, 2 for XTALI */
	u8 chip_id;
	struct stv0900_reg *ts_config;
	enum fe_stv0900_error errs;
	int dmds_used;
	};

	/* state for each demod */
	struct stv0900_state {
	/* pointer for internal params, one for each pair of demods */
	struct stv0900_internal *internal;
	struct i2c_adapter *i2c_adap;
	const struct stv0900_config *config;
	struct dvb_frontend frontend;
	int demod;
	};

	extern int stvdebug;

	extern s32 ge2comp(s32 a, s32 width);

	extern void stv0900_write_reg(struct stv0900_internal *i_params,
	u16 reg_addr, u8 reg_data);

	extern u8 stv0900_read_reg(struct stv0900_internal *i_params,
	u16 reg_addr);

	extern void stv0900_write_bits(struct stv0900_internal *i_params,
	u32 label, u8 val);

	extern u8 stv0900_get_bits(struct stv0900_internal *i_params,
	u32 label);

	extern int stv0900_get_demod_lock(struct stv0900_internal *i_params,
	enum fe_stv0900_demod_num demod, s32 time_out);
	extern int stv0900_check_signal_presence(struct stv0900_internal *i_params,
	enum fe_stv0900_demod_num demod);

	extern enum fe_stv0900_signal_type stv0900_algo(struct dvb_frontend *fe);

	extern void stv0900_set_tuner(struct dvb_frontend *fe, u32 frequency,
	u32 bandwidth);
	extern void stv0900_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth);

	extern void stv0900_start_search(struct stv0900_internal *i_params,
	enum fe_stv0900_demod_num demod);

	extern u8 stv0900_get_optim_carr_loop(s32 srate,
	enum fe_stv0900_modcode modcode,
	s32 pilot, u8 chip_id);

	extern u8 stv0900_get_optim_short_carr_loop(s32 srate,
	enum fe_stv0900_modulation modulation,
	u8 chip_id);

	extern void stv0900_stop_all_s2_modcod(struct stv0900_internal *i_params,
	enum fe_stv0900_demod_num demod);

	extern void stv0900_activate_s2_modcod(struct stv0900_internal *i_params,
	enum fe_stv0900_demod_num demod);

	extern void stv0900_activate_s2_modcod_single(struct stv0900_internal *i_params,
	enum fe_stv0900_demod_num demod);

	extern enum
	fe_stv0900_tracking_standard stv0900_get_standard(struct dvb_frontend *fe,
	enum fe_stv0900_demod_num demod);

	extern u32
	stv0900_get_freq_auto(struct stv0900_internal *intp, int demod);

	extern void
	stv0900_set_tuner_auto(struct stv0900_internal *intp, u32 Frequency,
	u32 Bandwidth, int demod);

	#endif