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/*
* Support for LGDT3306A - 8VSB/QAM-B
*
* Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
* based on lgdt3305.[ch] by Michael Krufky
*
* 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 _LGDT3306A_H_
#define _LGDT3306A_H_
#include <linux/i2c.h>
#include "dvb_frontend.h"
enum lgdt3306a_mpeg_mode {
LGDT3306A_MPEG_PARALLEL = 0,
LGDT3306A_MPEG_SERIAL = 1,
};
enum lgdt3306a_tp_clock_edge {
LGDT3306A_TPCLK_RISING_EDGE = 0,
LGDT3306A_TPCLK_FALLING_EDGE = 1,
};
enum lgdt3306a_tp_valid_polarity {
LGDT3306A_TP_VALID_LOW = 0,
LGDT3306A_TP_VALID_HIGH = 1,
};
struct lgdt3306a_config {
u8 i2c_addr;
/* user defined IF frequency in KHz */
u16 qam_if_khz;
u16 vsb_if_khz;
/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
unsigned int deny_i2c_rptr:1;
/* spectral inversion - 0:disabled 1:enabled */
unsigned int spectral_inversion:1;
enum lgdt3306a_mpeg_mode mpeg_mode;
enum lgdt3306a_tp_clock_edge tpclk_edge;
enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
/* demod clock freq in MHz; 24 or 25 supported */
int xtalMHz;
/* returned by driver if using i2c bus multiplexing */
struct dvb_frontend **fe;
struct i2c_adapter **i2c_adapter;
};
#if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
struct i2c_adapter *i2c_adap);
#else
static inline
struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
struct i2c_adapter *i2c_adap)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif /* CONFIG_DVB_LGDT3306A */
#endif /* _LGDT3306A_H_ */
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