1 /*
2  *    Support for LGDT3306A - 8VSB/QAM-B
3  *
4  *    Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
5  *      based on lgdt3305.[ch] by Michael Krufky
6  *
7  *    This program is free software; you can redistribute it and/or modify
8  *    it under the terms of the GNU General Public License as published by
9  *    the Free Software Foundation; either version 2 of the License, or
10  *    (at your option) any later version.
11  *
12  *    This program is distributed in the hope that it will be useful,
13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *    GNU General Public License for more details.
16  */
17 
18 #ifndef _LGDT3306A_H_
19 #define _LGDT3306A_H_
20 
21 #include <linux/i2c.h>
22 #include <media/dvb_frontend.h>
23 
24 
25 enum lgdt3306a_mpeg_mode {
26 	LGDT3306A_MPEG_PARALLEL = 0,
27 	LGDT3306A_MPEG_SERIAL = 1,
28 };
29 
30 enum lgdt3306a_tp_clock_edge {
31 	LGDT3306A_TPCLK_RISING_EDGE = 0,
32 	LGDT3306A_TPCLK_FALLING_EDGE = 1,
33 };
34 
35 enum lgdt3306a_tp_valid_polarity {
36 	LGDT3306A_TP_VALID_LOW = 0,
37 	LGDT3306A_TP_VALID_HIGH = 1,
38 };
39 
40 struct lgdt3306a_config {
41 	u8 i2c_addr;
42 
43 	/* user defined IF frequency in KHz */
44 	u16 qam_if_khz;
45 	u16 vsb_if_khz;
46 
47 	/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
48 	unsigned int deny_i2c_rptr:1;
49 
50 	/* spectral inversion - 0:disabled 1:enabled */
51 	unsigned int spectral_inversion:1;
52 
53 	enum lgdt3306a_mpeg_mode mpeg_mode;
54 	enum lgdt3306a_tp_clock_edge tpclk_edge;
55 	enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
56 
57 	/* demod clock freq in MHz; 24 or 25 supported */
58 	int  xtalMHz;
59 
60 	/* returned by driver if using i2c bus multiplexing */
61 	struct dvb_frontend **fe;
62 	struct i2c_adapter **i2c_adapter;
63 };
64 
65 #if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
66 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
67 				      struct i2c_adapter *i2c_adap);
68 #else
69 static inline
70 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
71 				      struct i2c_adapter *i2c_adap)
72 {
73 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
74 	return NULL;
75 }
76 #endif /* CONFIG_DVB_LGDT3306A */
77 
78 #endif /* _LGDT3306A_H_ */
79