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  *    You should have received a copy of the GNU General Public License
17  *    along with this program; if not, write to the Free Software
18  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19  *
20  */
21 
22 #ifndef _LGDT3305_H_
23 #define _LGDT3305_H_
24 
25 #include <linux/kconfig.h>
26 #include <linux/i2c.h>
27 #include "dvb_frontend.h"
28 
29 
30 enum lgdt3305_mpeg_mode {
31 	LGDT3305_MPEG_PARALLEL = 0,
32 	LGDT3305_MPEG_SERIAL = 1,
33 };
34 
35 enum lgdt3305_tp_clock_edge {
36 	LGDT3305_TPCLK_RISING_EDGE = 0,
37 	LGDT3305_TPCLK_FALLING_EDGE = 1,
38 };
39 
40 enum lgdt3305_tp_clock_mode {
41 	LGDT3305_TPCLK_GATED = 0,
42 	LGDT3305_TPCLK_FIXED = 1,
43 };
44 
45 enum lgdt3305_tp_valid_polarity {
46 	LGDT3305_TP_VALID_LOW = 0,
47 	LGDT3305_TP_VALID_HIGH = 1,
48 };
49 
50 enum lgdt_demod_chip_type {
51 	LGDT3305 = 0,
52 	LGDT3304 = 1,
53 };
54 
55 struct lgdt3305_config {
56 	u8 i2c_addr;
57 
58 	/* user defined IF frequency in KHz */
59 	u16 qam_if_khz;
60 	u16 vsb_if_khz;
61 
62 	/* AGC Power reference - defaults are used if left unset */
63 	u16 usref_8vsb;   /* default: 0x32c4 */
64 	u16 usref_qam64;  /* default: 0x5400 */
65 	u16 usref_qam256; /* default: 0x2a80 */
66 
67 	/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
68 	unsigned int deny_i2c_rptr:1;
69 
70 	/* spectral inversion - 0:disabled 1:enabled */
71 	unsigned int spectral_inversion:1;
72 
73 	/* use RF AGC loop - 0:disabled 1:enabled */
74 	unsigned int rf_agc_loop:1;
75 
76 	enum lgdt3305_mpeg_mode mpeg_mode;
77 	enum lgdt3305_tp_clock_edge tpclk_edge;
78 	enum lgdt3305_tp_clock_mode tpclk_mode;
79 	enum lgdt3305_tp_valid_polarity tpvalid_polarity;
80 	enum lgdt_demod_chip_type demod_chip;
81 };
82 
83 #if IS_REACHABLE(CONFIG_DVB_LGDT3305)
84 extern
85 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
86 				     struct i2c_adapter *i2c_adap);
87 #else
88 static inline
89 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
90 				     struct i2c_adapter *i2c_adap)
91 {
92 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
93 	return NULL;
94 }
95 #endif /* CONFIG_DVB_LGDT3305 */
96 
97 #endif /* _LGDT3305_H_ */
98