1 /*
2  *    Support for LG Electronics LGDT3304 and LGDT3305 - VSB/QAM
3  *
4  *    Copyright (C) 2008, 2009, 2010 Michael Krufky <mkrufky@linuxtv.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  */
17 
18 #ifndef _LGDT3305_H_
19 #define _LGDT3305_H_
20 
21 #include <linux/i2c.h>
22 #include "dvb_frontend.h"
23 
24 
25 enum lgdt3305_mpeg_mode {
26 	LGDT3305_MPEG_PARALLEL = 0,
27 	LGDT3305_MPEG_SERIAL = 1,
28 };
29 
30 enum lgdt3305_tp_clock_edge {
31 	LGDT3305_TPCLK_RISING_EDGE = 0,
32 	LGDT3305_TPCLK_FALLING_EDGE = 1,
33 };
34 
35 enum lgdt3305_tp_clock_mode {
36 	LGDT3305_TPCLK_GATED = 0,
37 	LGDT3305_TPCLK_FIXED = 1,
38 };
39 
40 enum lgdt3305_tp_valid_polarity {
41 	LGDT3305_TP_VALID_LOW = 0,
42 	LGDT3305_TP_VALID_HIGH = 1,
43 };
44 
45 enum lgdt_demod_chip_type {
46 	LGDT3305 = 0,
47 	LGDT3304 = 1,
48 };
49 
50 struct lgdt3305_config {
51 	u8 i2c_addr;
52 
53 	/* user defined IF frequency in KHz */
54 	u16 qam_if_khz;
55 	u16 vsb_if_khz;
56 
57 	/* AGC Power reference - defaults are used if left unset */
58 	u16 usref_8vsb;   /* default: 0x32c4 */
59 	u16 usref_qam64;  /* default: 0x5400 */
60 	u16 usref_qam256; /* default: 0x2a80 */
61 
62 	/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
63 	unsigned int deny_i2c_rptr:1;
64 
65 	/* spectral inversion - 0:disabled 1:enabled */
66 	unsigned int spectral_inversion:1;
67 
68 	/* use RF AGC loop - 0:disabled 1:enabled */
69 	unsigned int rf_agc_loop:1;
70 
71 	enum lgdt3305_mpeg_mode mpeg_mode;
72 	enum lgdt3305_tp_clock_edge tpclk_edge;
73 	enum lgdt3305_tp_clock_mode tpclk_mode;
74 	enum lgdt3305_tp_valid_polarity tpvalid_polarity;
75 	enum lgdt_demod_chip_type demod_chip;
76 };
77 
78 #if IS_REACHABLE(CONFIG_DVB_LGDT3305)
79 extern
80 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
81 				     struct i2c_adapter *i2c_adap);
82 #else
83 static inline
84 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
85 				     struct i2c_adapter *i2c_adap)
86 {
87 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
88 	return NULL;
89 }
90 #endif /* CONFIG_DVB_LGDT3305 */
91 
92 #endif /* _LGDT3305_H_ */
93