drivers/media/dvb/dvb-core/dvb_frontend.h - arm/linux-arm64-legacy - Git at Google

 /*
  * dvb_frontend.h
  *
  * Copyright (C) 2001 convergence integrated media GmbH
  * Copyright (C) 2004 convergence GmbH
  *
  * Written by Ralph Metzler
  * Overhauled by Holger Waechtler
  * Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
  * as published by the Free Software Foundation; either version 2.1
  * 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 Lesser General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  *
  */

 #ifndef _DVB_FRONTEND_H_
 #define _DVB_FRONTEND_H_

 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/ioctl.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/delay.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>

 #include <linux/dvb/frontend.h>

 #include "dvbdev.h"

 struct dvb_frontend_tune_settings {
 	int min_delay_ms;
 	int step_size;
 	int max_drift;
 	struct dvb_frontend_parameters parameters;
 };

 struct dvb_frontend;

 struct dvb_tuner_info {
 	char name[128];

 	u32 frequency_min;
 	u32 frequency_max;
 	u32 frequency_step;

 	u32 bandwidth_min;
 	u32 bandwidth_max;
 	u32 bandwidth_step;
 };

 struct analog_parameters {
 	unsigned int frequency;
 	unsigned int mode;
 	unsigned int audmode;
 	u64 std;
 };

 enum dvbfe_modcod {
 	DVBFE_MODCOD_DUMMY_PLFRAME	= 0,
 	DVBFE_MODCOD_QPSK_1_4,
 	DVBFE_MODCOD_QPSK_1_3,
 	DVBFE_MODCOD_QPSK_2_5,
 	DVBFE_MODCOD_QPSK_1_2,
 	DVBFE_MODCOD_QPSK_3_5,
 	DVBFE_MODCOD_QPSK_2_3,
 	DVBFE_MODCOD_QPSK_3_4,
 	DVBFE_MODCOD_QPSK_4_5,
 	DVBFE_MODCOD_QPSK_5_6,
 	DVBFE_MODCOD_QPSK_8_9,
 	DVBFE_MODCOD_QPSK_9_10,
 	DVBFE_MODCOD_8PSK_3_5,
 	DVBFE_MODCOD_8PSK_2_3,
 	DVBFE_MODCOD_8PSK_3_4,
 	DVBFE_MODCOD_8PSK_5_6,
 	DVBFE_MODCOD_8PSK_8_9,
 	DVBFE_MODCOD_8PSK_9_10,
 	DVBFE_MODCOD_16APSK_2_3,
 	DVBFE_MODCOD_16APSK_3_4,
 	DVBFE_MODCOD_16APSK_4_5,
 	DVBFE_MODCOD_16APSK_5_6,
 	DVBFE_MODCOD_16APSK_8_9,
 	DVBFE_MODCOD_16APSK_9_10,
 	DVBFE_MODCOD_32APSK_3_4,
 	DVBFE_MODCOD_32APSK_4_5,
 	DVBFE_MODCOD_32APSK_5_6,
 	DVBFE_MODCOD_32APSK_8_9,
 	DVBFE_MODCOD_32APSK_9_10,
 	DVBFE_MODCOD_RESERVED_1,
 	DVBFE_MODCOD_BPSK_1_3,
 	DVBFE_MODCOD_BPSK_1_4,
 	DVBFE_MODCOD_RESERVED_2
 };

 enum tuner_param {
 	DVBFE_TUNER_FREQUENCY		= (1 <<  0),
 	DVBFE_TUNER_TUNERSTEP		= (1 <<  1),
 	DVBFE_TUNER_IFFREQ		= (1 <<  2),
 	DVBFE_TUNER_BANDWIDTH		= (1 <<  3),
 	DVBFE_TUNER_REFCLOCK		= (1 <<  4),
 	DVBFE_TUNER_IQSENSE		= (1 <<  5),
 	DVBFE_TUNER_DUMMY		= (1 << 31)
 };

 /*
  * ALGO_HW: (Hardware Algorithm)
  * ----------------------------------------------------------------
  * Devices that support this algorithm do everything in hardware
  * and no software support is needed to handle them.
  * Requesting these devices to LOCK is the only thing required,
  * device is supposed to do everything in the hardware.
  *
  * ALGO_SW: (Software Algorithm)
  * ----------------------------------------------------------------
  * These are dumb devices, that require software to do everything
  *
  * ALGO_CUSTOM: (Customizable Agorithm)
  * ----------------------------------------------------------------
  * Devices having this algorithm can be customized to have specific
  * algorithms in the frontend driver, rather than simply doing a
  * software zig-zag. In this case the zigzag maybe hardware assisted
  * or it maybe completely done in hardware. In all cases, usage of
  * this algorithm, in conjunction with the search and track
  * callbacks, utilizes the driver specific algorithm.
  *
  * ALGO_RECOVERY: (Recovery Algorithm)
  * ----------------------------------------------------------------
  * These devices have AUTO recovery capabilities from LOCK failure
  */
 enum dvbfe_algo {
 	DVBFE_ALGO_HW			= (1 <<  0),
 	DVBFE_ALGO_SW			= (1 <<  1),
 	DVBFE_ALGO_CUSTOM		= (1 <<  2),
 	DVBFE_ALGO_RECOVERY		= (1 << 31)
 };

 struct tuner_state {
 	u32 frequency;
 	u32 tunerstep;
 	u32 ifreq;
 	u32 bandwidth;
 	u32 iqsense;
 	u32 refclock;
 };

 /*
  * search callback possible return status
  *
  * DVBFE_ALGO_SEARCH_SUCCESS
  * The frontend search algorithm completed and returned successfully
  *
  * DVBFE_ALGO_SEARCH_ASLEEP
  * The frontend search algorithm is sleeping
  *
  * DVBFE_ALGO_SEARCH_FAILED
  * The frontend search for a signal failed
  *
  * DVBFE_ALGO_SEARCH_INVALID
  * The frontend search algorith was probably supplied with invalid
  * parameters and the search is an invalid one
  *
  * DVBFE_ALGO_SEARCH_ERROR
  * The frontend search algorithm failed due to some error
  *
  * DVBFE_ALGO_SEARCH_AGAIN
  * The frontend search algorithm was requested to search again
  */
 enum dvbfe_search {
 	DVBFE_ALGO_SEARCH_SUCCESS	= (1 <<  0),
 	DVBFE_ALGO_SEARCH_ASLEEP	= (1 <<  1),
 	DVBFE_ALGO_SEARCH_FAILED	= (1 <<  2),
 	DVBFE_ALGO_SEARCH_INVALID	= (1 <<  3),
 	DVBFE_ALGO_SEARCH_AGAIN		= (1 <<  4),
 	DVBFE_ALGO_SEARCH_ERROR		= (1 << 31),
 };


 struct dvb_tuner_ops {

 	struct dvb_tuner_info info;

 	int (*release)(struct dvb_frontend *fe);
 	int (*init)(struct dvb_frontend *fe);
 	int (*sleep)(struct dvb_frontend *fe);

 	/** This is for simple PLLs - set all parameters in one go. */
 	int (*set_params)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);
 	int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p);

 	/** This is support for demods like the mt352 - fills out the supplied buffer with what to write. */
 	int (*calc_regs)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p, u8 *buf, int buf_len);

 	/** This is to allow setting tuner-specific configs */
 	int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);

 	int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
 	int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);

 #define TUNER_STATUS_LOCKED 1
 #define TUNER_STATUS_STEREO 2
 	int (*get_status)(struct dvb_frontend *fe, u32 *status);
 	int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength);

 	/** These are provided separately from set_params in order to facilitate silicon
 	 * tuners which require sophisticated tuning loops, controlling each parameter separately. */
 	int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
 	int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);

 	/*
 	 * These are provided separately from set_params in order to facilitate silicon
 	 * tuners which require sophisticated tuning loops, controlling each parameter separately.
 	 */
 	int (*set_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
 	int (*get_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
 };

 struct analog_demod_info {
 	char *name;
 };

 struct analog_demod_ops {

 	struct analog_demod_info info;

 	void (*set_params)(struct dvb_frontend *fe,
 			   struct analog_parameters *params);
 	int  (*has_signal)(struct dvb_frontend *fe);
 	int  (*is_stereo)(struct dvb_frontend *fe);
 	int  (*get_afc)(struct dvb_frontend *fe);
 	void (*tuner_status)(struct dvb_frontend *fe);
 	void (*standby)(struct dvb_frontend *fe);
 	void (*release)(struct dvb_frontend *fe);
 	int  (*i2c_gate_ctrl)(struct dvb_frontend *fe, int enable);

 	/** This is to allow setting tuner-specific configuration */
 	int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
 };

 struct dvb_frontend_ops {

 	struct dvb_frontend_info info;

 	void (*release)(struct dvb_frontend* fe);
 	void (*release_sec)(struct dvb_frontend* fe);

 	int (*init)(struct dvb_frontend* fe);
 	int (*sleep)(struct dvb_frontend* fe);

 	int (*write)(struct dvb_frontend* fe, const u8 buf[], int len);

 	/* if this is set, it overrides the default swzigzag */
 	int (*tune)(struct dvb_frontend* fe,
 		    struct dvb_frontend_parameters* params,
 		    unsigned int mode_flags,
 		    unsigned int *delay,
 		    fe_status_t *status);
 	/* get frontend tuning algorithm from the module */
 	enum dvbfe_algo (*get_frontend_algo)(struct dvb_frontend *fe);

 	/* these two are only used for the swzigzag code */
 	int (*set_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
 	int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);

 	int (*get_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);

 	int (*read_status)(struct dvb_frontend* fe, fe_status_t* status);
 	int (*read_ber)(struct dvb_frontend* fe, u32* ber);
 	int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
 	int (*read_snr)(struct dvb_frontend* fe, u16* snr);
 	int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);

 	int (*diseqc_reset_overload)(struct dvb_frontend* fe);
 	int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
 	int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
 	int (*diseqc_send_burst)(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd);
 	int (*set_tone)(struct dvb_frontend* fe, fe_sec_tone_mode_t tone);
 	int (*set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
 	int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
 	int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
 	int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
 	int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);

 	/* These callbacks are for devices that implement their own
 	 * tuning algorithms, rather than a simple swzigzag
 	 */
 	enum dvbfe_search (*search)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);
 	int (*track)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);

 	struct dvb_tuner_ops tuner_ops;
 	struct analog_demod_ops analog_ops;

 	int (*set_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
 	int (*get_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
 };

 #define MAX_EVENT 8

 struct dvb_fe_events {
 	struct dvb_frontend_event events[MAX_EVENT];
 	int			  eventw;
 	int			  eventr;
 	int			  overflow;
 	wait_queue_head_t	  wait_queue;
 	struct mutex		  mtx;
 };

 struct dtv_frontend_properties {

 	/* Cache State */
 	u32			state;

 	u32			frequency;
 	fe_modulation_t		modulation;

 	fe_sec_voltage_t	voltage;
 	fe_sec_tone_mode_t	sectone;
 	fe_spectral_inversion_t	inversion;
 	fe_code_rate_t		fec_inner;
 	fe_transmit_mode_t	transmission_mode;
 	u32			bandwidth_hz;	/* 0 = AUTO */
 	fe_guard_interval_t	guard_interval;
 	fe_hierarchy_t		hierarchy;
 	u32			symbol_rate;
 	fe_code_rate_t		code_rate_HP;
 	fe_code_rate_t		code_rate_LP;

 	fe_pilot_t		pilot;
 	fe_rolloff_t		rolloff;

 	fe_delivery_system_t	delivery_system;

 	/* ISDB-T specifics */
 	u8			isdbt_partial_reception;
 	u8			isdbt_sb_mode;
 	u8			isdbt_sb_subchannel;
 	u32			isdbt_sb_segment_idx;
 	u32			isdbt_sb_segment_count;
 	u8			isdbt_layer_enabled;
 	struct {
 	    u8			segment_count;
 	    fe_code_rate_t	fec;
 	    fe_modulation_t	modulation;
 	    u8			interleaving;
 	} layer[3];

 	/* ISDB-T specifics */
 	u32			isdbs_ts_id;
 };

 struct dvb_frontend {
 	struct dvb_frontend_ops ops;
 	struct dvb_adapter *dvb;
 	void *demodulator_priv;
 	void *tuner_priv;
 	void *frontend_priv;
 	void *sec_priv;
 	void *analog_demod_priv;
 	struct dtv_frontend_properties dtv_property_cache;
 #define DVB_FRONTEND_COMPONENT_TUNER 0
 	int (*callback)(void *adapter_priv, int component, int cmd, int arg);
 	int id;
 };

 extern int dvb_register_frontend(struct dvb_adapter *dvb,
 				 struct dvb_frontend *fe);

 extern int dvb_unregister_frontend(struct dvb_frontend *fe);

 extern void dvb_frontend_detach(struct dvb_frontend *fe);

 extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);

 extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
 extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);

 #endif
	/*
	* dvb_frontend.h
	*
	* Copyright (C) 2001 convergence integrated media GmbH
	* Copyright (C) 2004 convergence GmbH
	*
	* Written by Ralph Metzler
	* Overhauled by Holger Waechtler
	* Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public License
	* as published by the Free Software Foundation; either version 2.1
	* 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 Lesser General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	*
	*/

	#ifndef _DVB_FRONTEND_H_
	#define _DVB_FRONTEND_H_

	#include <linux/types.h>
	#include <linux/sched.h>
	#include <linux/ioctl.h>
	#include <linux/i2c.h>
	#include <linux/module.h>
	#include <linux/errno.h>
	#include <linux/delay.h>
	#include <linux/mutex.h>
	#include <linux/slab.h>

	#include <linux/dvb/frontend.h>

	#include "dvbdev.h"

	struct dvb_frontend_tune_settings {
	int min_delay_ms;
	int step_size;
	int max_drift;
	struct dvb_frontend_parameters parameters;
	};

	struct dvb_frontend;

	struct dvb_tuner_info {
	char name[128];

	u32 frequency_min;
	u32 frequency_max;
	u32 frequency_step;

	u32 bandwidth_min;
	u32 bandwidth_max;
	u32 bandwidth_step;
	};

	struct analog_parameters {
	unsigned int frequency;
	unsigned int mode;
	unsigned int audmode;
	u64 std;
	};

	enum dvbfe_modcod {
	DVBFE_MODCOD_DUMMY_PLFRAME = 0,
	DVBFE_MODCOD_QPSK_1_4,
	DVBFE_MODCOD_QPSK_1_3,
	DVBFE_MODCOD_QPSK_2_5,
	DVBFE_MODCOD_QPSK_1_2,
	DVBFE_MODCOD_QPSK_3_5,
	DVBFE_MODCOD_QPSK_2_3,
	DVBFE_MODCOD_QPSK_3_4,
	DVBFE_MODCOD_QPSK_4_5,
	DVBFE_MODCOD_QPSK_5_6,
	DVBFE_MODCOD_QPSK_8_9,
	DVBFE_MODCOD_QPSK_9_10,
	DVBFE_MODCOD_8PSK_3_5,
	DVBFE_MODCOD_8PSK_2_3,
	DVBFE_MODCOD_8PSK_3_4,
	DVBFE_MODCOD_8PSK_5_6,
	DVBFE_MODCOD_8PSK_8_9,
	DVBFE_MODCOD_8PSK_9_10,
	DVBFE_MODCOD_16APSK_2_3,
	DVBFE_MODCOD_16APSK_3_4,
	DVBFE_MODCOD_16APSK_4_5,
	DVBFE_MODCOD_16APSK_5_6,
	DVBFE_MODCOD_16APSK_8_9,
	DVBFE_MODCOD_16APSK_9_10,
	DVBFE_MODCOD_32APSK_3_4,
	DVBFE_MODCOD_32APSK_4_5,
	DVBFE_MODCOD_32APSK_5_6,
	DVBFE_MODCOD_32APSK_8_9,
	DVBFE_MODCOD_32APSK_9_10,
	DVBFE_MODCOD_RESERVED_1,
	DVBFE_MODCOD_BPSK_1_3,
	DVBFE_MODCOD_BPSK_1_4,
	DVBFE_MODCOD_RESERVED_2
	};

	enum tuner_param {
	DVBFE_TUNER_FREQUENCY = (1 << 0),
	DVBFE_TUNER_TUNERSTEP = (1 << 1),
	DVBFE_TUNER_IFFREQ = (1 << 2),
	DVBFE_TUNER_BANDWIDTH = (1 << 3),
	DVBFE_TUNER_REFCLOCK = (1 << 4),
	DVBFE_TUNER_IQSENSE = (1 << 5),
	DVBFE_TUNER_DUMMY = (1 << 31)
	};

	/*
	* ALGO_HW: (Hardware Algorithm)
	* ----------------------------------------------------------------
	* Devices that support this algorithm do everything in hardware
	* and no software support is needed to handle them.
	* Requesting these devices to LOCK is the only thing required,
	* device is supposed to do everything in the hardware.
	*
	* ALGO_SW: (Software Algorithm)
	* ----------------------------------------------------------------
	* These are dumb devices, that require software to do everything
	*
	* ALGO_CUSTOM: (Customizable Agorithm)
	* ----------------------------------------------------------------
	* Devices having this algorithm can be customized to have specific
	* algorithms in the frontend driver, rather than simply doing a
	* software zig-zag. In this case the zigzag maybe hardware assisted
	* or it maybe completely done in hardware. In all cases, usage of
	* this algorithm, in conjunction with the search and track
	* callbacks, utilizes the driver specific algorithm.
	*
	* ALGO_RECOVERY: (Recovery Algorithm)
	* ----------------------------------------------------------------
	* These devices have AUTO recovery capabilities from LOCK failure
	*/
	enum dvbfe_algo {
	DVBFE_ALGO_HW = (1 << 0),
	DVBFE_ALGO_SW = (1 << 1),
	DVBFE_ALGO_CUSTOM = (1 << 2),
	DVBFE_ALGO_RECOVERY = (1 << 31)
	};

	struct tuner_state {
	u32 frequency;
	u32 tunerstep;
	u32 ifreq;
	u32 bandwidth;
	u32 iqsense;
	u32 refclock;
	};

	/*
	* search callback possible return status
	*
	* DVBFE_ALGO_SEARCH_SUCCESS
	* The frontend search algorithm completed and returned successfully
	*
	* DVBFE_ALGO_SEARCH_ASLEEP
	* The frontend search algorithm is sleeping
	*
	* DVBFE_ALGO_SEARCH_FAILED
	* The frontend search for a signal failed
	*
	* DVBFE_ALGO_SEARCH_INVALID
	* The frontend search algorith was probably supplied with invalid
	* parameters and the search is an invalid one
	*
	* DVBFE_ALGO_SEARCH_ERROR
	* The frontend search algorithm failed due to some error
	*
	* DVBFE_ALGO_SEARCH_AGAIN
	* The frontend search algorithm was requested to search again
	*/
	enum dvbfe_search {
	DVBFE_ALGO_SEARCH_SUCCESS = (1 << 0),
	DVBFE_ALGO_SEARCH_ASLEEP = (1 << 1),
	DVBFE_ALGO_SEARCH_FAILED = (1 << 2),
	DVBFE_ALGO_SEARCH_INVALID = (1 << 3),
	DVBFE_ALGO_SEARCH_AGAIN = (1 << 4),
	DVBFE_ALGO_SEARCH_ERROR = (1 << 31),
	};


	struct dvb_tuner_ops {

	struct dvb_tuner_info info;

	int (release)(struct dvb_frontend fe);
	int (init)(struct dvb_frontend fe);
	int (sleep)(struct dvb_frontend fe);

	/** This is for simple PLLs - set all parameters in one go. */
	int (set_params)(struct dvb_frontend fe, struct dvb_frontend_parameters *p);
	int (set_analog_params)(struct dvb_frontend fe, struct analog_parameters *p);

	/** This is support for demods like the mt352 - fills out the supplied buffer with what to write. */
	int (calc_regs)(struct dvb_frontend fe, struct dvb_frontend_parameters p, u8 buf, int buf_len);

	/** This is to allow setting tuner-specific configs */
	int (set_config)(struct dvb_frontend fe, void *priv_cfg);

	int (get_frequency)(struct dvb_frontend fe, u32 *frequency);
	int (get_bandwidth)(struct dvb_frontend fe, u32 *bandwidth);

	#define TUNER_STATUS_LOCKED 1
	#define TUNER_STATUS_STEREO 2
	int (get_status)(struct dvb_frontend fe, u32 *status);
	int (get_rf_strength)(struct dvb_frontend fe, u16 *strength);

	/** These are provided separately from set_params in order to facilitate silicon
	* tuners which require sophisticated tuning loops, controlling each parameter separately. */
	int (set_frequency)(struct dvb_frontend fe, u32 frequency);
	int (set_bandwidth)(struct dvb_frontend fe, u32 bandwidth);

	/*
	* These are provided separately from set_params in order to facilitate silicon
	* tuners which require sophisticated tuning loops, controlling each parameter separately.
	*/
	int (set_state)(struct dvb_frontend fe, enum tuner_param param, struct tuner_state *state);
	int (get_state)(struct dvb_frontend fe, enum tuner_param param, struct tuner_state *state);
	};

	struct analog_demod_info {
	char *name;
	};

	struct analog_demod_ops {

	struct analog_demod_info info;

	void (set_params)(struct dvb_frontend fe,
	struct analog_parameters *params);
	int (has_signal)(struct dvb_frontend fe);
	int (is_stereo)(struct dvb_frontend fe);
	int (get_afc)(struct dvb_frontend fe);
	void (tuner_status)(struct dvb_frontend fe);
	void (standby)(struct dvb_frontend fe);
	void (release)(struct dvb_frontend fe);
	int (i2c_gate_ctrl)(struct dvb_frontend fe, int enable);

	/** This is to allow setting tuner-specific configuration */
	int (set_config)(struct dvb_frontend fe, void *priv_cfg);
	};

	struct dvb_frontend_ops {

	struct dvb_frontend_info info;

	void (release)(struct dvb_frontend fe);
	void (release_sec)(struct dvb_frontend fe);

	int (init)(struct dvb_frontend fe);
	int (sleep)(struct dvb_frontend fe);

	int (write)(struct dvb_frontend fe, const u8 buf[], int len);

	/* if this is set, it overrides the default swzigzag */
	int (tune)(struct dvb_frontend fe,
	struct dvb_frontend_parameters* params,
	unsigned int mode_flags,
	unsigned int *delay,
	fe_status_t *status);
	/* get frontend tuning algorithm from the module */
	enum dvbfe_algo (get_frontend_algo)(struct dvb_frontend fe);

	/* these two are only used for the swzigzag code */
	int (set_frontend)(struct dvb_frontend fe, struct dvb_frontend_parameters* params);
	int (get_tune_settings)(struct dvb_frontend fe, struct dvb_frontend_tune_settings* settings);

	int (get_frontend)(struct dvb_frontend fe, struct dvb_frontend_parameters* params);

	int (read_status)(struct dvb_frontend fe, fe_status_t* status);
	int (read_ber)(struct dvb_frontend fe, u32* ber);
	int (read_signal_strength)(struct dvb_frontend fe, u16* strength);
	int (read_snr)(struct dvb_frontend fe, u16* snr);
	int (read_ucblocks)(struct dvb_frontend fe, u32* ucblocks);

	int (diseqc_reset_overload)(struct dvb_frontend fe);
	int (diseqc_send_master_cmd)(struct dvb_frontend fe, struct dvb_diseqc_master_cmd* cmd);
	int (diseqc_recv_slave_reply)(struct dvb_frontend fe, struct dvb_diseqc_slave_reply* reply);
	int (diseqc_send_burst)(struct dvb_frontend fe, fe_sec_mini_cmd_t minicmd);
	int (set_tone)(struct dvb_frontend fe, fe_sec_tone_mode_t tone);
	int (set_voltage)(struct dvb_frontend fe, fe_sec_voltage_t voltage);
	int (enable_high_lnb_voltage)(struct dvb_frontend fe, long arg);
	int (dishnetwork_send_legacy_command)(struct dvb_frontend fe, unsigned long cmd);
	int (i2c_gate_ctrl)(struct dvb_frontend fe, int enable);
	int (ts_bus_ctrl)(struct dvb_frontend fe, int acquire);

	/* These callbacks are for devices that implement their own
	* tuning algorithms, rather than a simple swzigzag
	*/
	enum dvbfe_search (search)(struct dvb_frontend fe, struct dvb_frontend_parameters *p);
	int (track)(struct dvb_frontend fe, struct dvb_frontend_parameters *p);

	struct dvb_tuner_ops tuner_ops;
	struct analog_demod_ops analog_ops;

	int (set_property)(struct dvb_frontend fe, struct dtv_property* tvp);
	int (get_property)(struct dvb_frontend fe, struct dtv_property* tvp);
	};

	#define MAX_EVENT 8

	struct dvb_fe_events {
	struct dvb_frontend_event events[MAX_EVENT];
	int eventw;
	int eventr;
	int overflow;
	wait_queue_head_t wait_queue;
	struct mutex mtx;
	};

	struct dtv_frontend_properties {

	/* Cache State */
	u32 state;

	u32 frequency;
	fe_modulation_t modulation;

	fe_sec_voltage_t voltage;
	fe_sec_tone_mode_t sectone;
	fe_spectral_inversion_t inversion;
	fe_code_rate_t fec_inner;
	fe_transmit_mode_t transmission_mode;
	u32 bandwidth_hz; /* 0 = AUTO */
	fe_guard_interval_t guard_interval;
	fe_hierarchy_t hierarchy;
	u32 symbol_rate;
	fe_code_rate_t code_rate_HP;
	fe_code_rate_t code_rate_LP;

	fe_pilot_t pilot;
	fe_rolloff_t rolloff;

	fe_delivery_system_t delivery_system;

	/* ISDB-T specifics */
	u8 isdbt_partial_reception;
	u8 isdbt_sb_mode;
	u8 isdbt_sb_subchannel;
	u32 isdbt_sb_segment_idx;
	u32 isdbt_sb_segment_count;
	u8 isdbt_layer_enabled;
	struct {
	u8 segment_count;
	fe_code_rate_t fec;
	fe_modulation_t modulation;
	u8 interleaving;
	} layer[3];

	/* ISDB-T specifics */
	u32 isdbs_ts_id;
	};

	struct dvb_frontend {
	struct dvb_frontend_ops ops;
	struct dvb_adapter *dvb;
	void *demodulator_priv;
	void *tuner_priv;
	void *frontend_priv;
	void *sec_priv;
	void *analog_demod_priv;
	struct dtv_frontend_properties dtv_property_cache;
	#define DVB_FRONTEND_COMPONENT_TUNER 0
	int (callback)(void adapter_priv, int component, int cmd, int arg);
	int id;
	};

	extern int dvb_register_frontend(struct dvb_adapter *dvb,
	struct dvb_frontend *fe);

	extern int dvb_unregister_frontend(struct dvb_frontend *fe);

	extern void dvb_frontend_detach(struct dvb_frontend *fe);

	extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);

	extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
	extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);

	#endif