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  *    You should have received a copy of the GNU General Public License
18  *    along with this program; if not, write to the Free Software
19  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  *
21  */
22 
23 #ifndef _LGDT3306A_H_
24 #define _LGDT3306A_H_
25 
26 #include <linux/i2c.h>
27 #include "dvb_frontend.h"
28 
29 
30 enum lgdt3306a_mpeg_mode {
31 	LGDT3306A_MPEG_PARALLEL = 0,
32 	LGDT3306A_MPEG_SERIAL = 1,
33 };
34 
35 enum lgdt3306a_tp_clock_edge {
36 	LGDT3306A_TPCLK_RISING_EDGE = 0,
37 	LGDT3306A_TPCLK_FALLING_EDGE = 1,
38 };
39 
40 enum lgdt3306a_tp_valid_polarity {
41 	LGDT3306A_TP_VALID_LOW = 0,
42 	LGDT3306A_TP_VALID_HIGH = 1,
43 };
44 
45 struct lgdt3306a_config {
46 	u8 i2c_addr;
47 
48 	/* user defined IF frequency in KHz */
49 	u16 qam_if_khz;
50 	u16 vsb_if_khz;
51 
52 	/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
53 	int deny_i2c_rptr:1;
54 
55 	/* spectral inversion - 0:disabled 1:enabled */
56 	int spectral_inversion:1;
57 
58 	enum lgdt3306a_mpeg_mode mpeg_mode;
59 	enum lgdt3306a_tp_clock_edge tpclk_edge;
60 	enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
61 
62 	/* demod clock freq in MHz; 24 or 25 supported */
63 	int  xtalMHz;
64 };
65 
66 #if defined(CONFIG_DVB_LGDT3306A) || (defined(CONFIG_DVB_LGDT3306A_MODULE) && \
67 				     defined(MODULE))
68 extern
69 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
70 				     struct i2c_adapter *i2c_adap);
71 #else
72 static inline
73 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
74 				     struct i2c_adapter *i2c_adap)
75 {
76 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
77 	return NULL;
78 }
79 #endif /* CONFIG_DVB_LGDT3306A */
80 
81 #endif /* _LGDT3306A_H_ */
82