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/*
* helene.h
*
* Sony HELENE DVB-S/S2/T/T2/C/C2/ISDB-T/S tuner driver (CXD2858ER)
*
* Copyright 2012 Sony Corporation
* Copyright (C) 2014 NetUP Inc.
* Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
*
* 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.
*/
#ifndef __DVB_HELENE_H__
#define __DVB_HELENE_H__
#include <linux/dvb/frontend.h>
#include <linux/i2c.h>
enum helene_xtal {
SONY_HELENE_XTAL_16000, /* 16 MHz */
SONY_HELENE_XTAL_20500, /* 20.5 MHz */
SONY_HELENE_XTAL_24000, /* 24 MHz */
SONY_HELENE_XTAL_41000 /* 41 MHz */
};
/**
* struct helene_config - the configuration of 'Helene' tuner driver
* @i2c_address: I2C address of the tuner
* @xtal_freq_mhz: Oscillator frequency, MHz
* @set_tuner_priv: Callback function private context
* @set_tuner_callback: Callback function that notifies the parent driver
* which tuner is active now
* @xtal: Cristal frequency as described by &enum helene_xtal
* @fe: Frontend for which connects this tuner
*/
struct helene_config {
u8 i2c_address;
u8 xtal_freq_mhz;
void *set_tuner_priv;
int (*set_tuner_callback)(void *, int);
enum helene_xtal xtal;
struct dvb_frontend *fe;
};
#if IS_REACHABLE(CONFIG_DVB_HELENE)
/**
* Attach a helene tuner (terrestrial and cable standards)
*
* @fe: frontend to be attached
* @config: pointer to &struct helene_config with tuner configuration.
* @i2c: i2c adapter to use.
*
* return: FE pointer on success, NULL on failure.
*/
extern struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c);
/**
* Attach a helene tuner (satellite standards)
*
* @fe: frontend to be attached
* @config: pointer to &struct helene_config with tuner configuration.
* @i2c: i2c adapter to use.
*
* return: FE pointer on success, NULL on failure.
*/
extern struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c)
{
pr_warn("%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
static inline struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c)
{
pr_warn("%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif
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