CooCenter-System-kernel/drivers/media/dvb-frontends/cx24123.h

/*
    Conexant cx24123/cx24109 - DVB QPSK Satellite demod/tuner driver

    Copyright (C) 2005 Steven Toth <stoth@linuxtv.org>

    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 CX24123_H
#define CX24123_H

#include <linux/kconfig.h>
#include <linux/dvb/frontend.h>

struct cx24123_config {
	/* the demodulator's i2c address */
	u8 demod_address;

	/* Need to set device param for start_dma */
	int (*set_ts_params)(struct dvb_frontend *fe, int is_punctured);

	/* 0 = LNB voltage normal, 1 = LNB voltage inverted */
	int lnb_polarity;

	/* this device has another tuner */
	u8 dont_use_pll;
	void (*agc_callback) (struct dvb_frontend *);
};

#if IS_REACHABLE(CONFIG_DVB_CX24123)
extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
					   struct i2c_adapter *i2c);
extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
#else
static inline struct dvb_frontend *cx24123_attach(
	const struct cx24123_config *config, struct i2c_adapter *i2c)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
static inline struct i2c_adapter *
	cx24123_get_tuner_i2c_adapter(struct dvb_frontend *fe)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif

#endif /* CX24123_H */