drivers/media/video/tuner-driver.h

/*
    tuner-driver.h - interface for different tuners

    Copyright (C) 1997 Markus Schroeder (schroedm@uni-duesseldorf.de)
    minor modifications by Ralph Metzler (rjkm@thp.uni-koeln.de)

    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.
*/

#ifndef __TUNER_DRIVER_H__
#define __TUNER_DRIVER_H__

#include <linux/videodev2.h>
#include <linux/i2c.h>
#include "dvb_frontend.h"

extern unsigned const int tuner_count;

struct analog_demod_info {
	char *name;
};

struct analog_tuner_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 tuner {
	/* device */
	struct i2c_client *i2c;
	struct list_head list;  /* list of tuners */

	unsigned int type;	/* chip type */

	unsigned int mode;
	unsigned int mode_mask;	/* Combination of allowable modes */

	unsigned int tv_freq;	/* keep track of the current settings */
	unsigned int radio_freq;
	unsigned int audmode;
	v4l2_std_id  std;

	int          using_v4l2;

	struct dvb_frontend fe;

	unsigned int config;
	int (*tuner_callback) (void *dev, int command,int arg);
};

#endif /* __TUNER_DRIVER_H__ */