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/*
Driver for Silicon Labs SI2165 DVB-C/-T Demodulator
Copyright (C) 2013-2014 Matthias Schwarzott <zzam@gentoo.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.
References:
http://www.silabs.com/Support%20Documents/TechnicalDocs/Si2165-short.pdf
*/
#ifndef _DVB_SI2165_H
#define _DVB_SI2165_H
#include <linux/dvb/frontend.h>
enum {
SI2165_MODE_OFF = 0x00,
SI2165_MODE_PLL_EXT = 0x20,
SI2165_MODE_PLL_XTAL = 0x21
};
struct si2165_config {
/* i2c addr
* possible values: 0x64,0x65,0x66,0x67 */
u8 i2c_addr;
/* external clock or XTAL */
u8 chip_mode;
/* frequency of external clock or xtal in Hz
* possible values: 4000000, 16000000, 20000000, 240000000, 27000000
*/
u32 ref_freq_Hz;
/* invert the spectrum */
bool inversion;
};
#if IS_REACHABLE(CONFIG_DVB_SI2165)
struct dvb_frontend *si2165_attach(
const struct si2165_config *config,
struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *si2165_attach(
const struct si2165_config *config,
struct i2c_adapter *i2c)
{
pr_warn("%s: driver disabled by Kconfig
", __func__);
return NULL;
}
#endif /* CONFIG_DVB_SI2165 */
#endif /* _DVB_SI2165_H */
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