1/*
2    Driver for Silicon Labs SI2165 DVB-C/-T Demodulator
3
4    Copyright (C) 2013-2014 Matthias Schwarzott <zzam@gentoo.org>
5
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 2 of the License, or
9    (at your option) any later version.
10
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15
16    References:
17    http://www.silabs.com/Support%20Documents/TechnicalDocs/Si2165-short.pdf
18*/
19
20#ifndef _DVB_SI2165_H
21#define _DVB_SI2165_H
22
23#include <linux/dvb/frontend.h>
24
25enum {
26	SI2165_MODE_OFF = 0x00,
27	SI2165_MODE_PLL_EXT = 0x20,
28	SI2165_MODE_PLL_XTAL = 0x21
29};
30
31struct si2165_config {
32	/* i2c addr
33	 * possible values: 0x64,0x65,0x66,0x67 */
34	u8 i2c_addr;
35
36	/* external clock or XTAL */
37	u8 chip_mode;
38
39	/* frequency of external clock or xtal in Hz
40	 * possible values: 4000000, 16000000, 20000000, 240000000, 27000000
41	 */
42	u32 ref_freq_Hz;
43
44	/* invert the spectrum */
45	bool inversion;
46};
47
48#if IS_REACHABLE(CONFIG_DVB_SI2165)
49struct dvb_frontend *si2165_attach(
50	const struct si2165_config *config,
51	struct i2c_adapter *i2c);
52#else
53static inline struct dvb_frontend *si2165_attach(
54	const struct si2165_config *config,
55	struct i2c_adapter *i2c)
56{
57	pr_warn("%s: driver disabled by Kconfig\n", __func__);
58	return NULL;
59}
60#endif /* CONFIG_DVB_SI2165 */
61
62#endif /* _DVB_SI2165_H */
63