1/*
2 *    Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator
3 *    LGS8913, LGS8GL5, LGS8G75
4 *    experimental support LGS8G42, LGS8G52
5 *
6 *    Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com>
7 *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
8 *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
9 *
10 *    This program is free software; you can redistribute it and/or modify
11 *    it under the terms of the GNU General Public License as published by
12 *    the Free Software Foundation; either version 2 of the License, or
13 *    (at your option) any later version.
14 *
15 *    This program is distributed in the hope that it will be useful,
16 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
17 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 *    GNU General Public License for more details.
19 *
20 *    You should have received a copy of the GNU General Public License
21 *    along with this program; if not, write to the Free Software
22 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 */
25
26#ifndef __LGS8GXX_H__
27#define __LGS8GXX_H__
28
29#include <linux/kconfig.h>
30#include <linux/dvb/frontend.h>
31#include <linux/i2c.h>
32
33#define LGS8GXX_PROD_LGS8913 0
34#define LGS8GXX_PROD_LGS8GL5 1
35#define LGS8GXX_PROD_LGS8G42 3
36#define LGS8GXX_PROD_LGS8G52 4
37#define LGS8GXX_PROD_LGS8G54 5
38#define LGS8GXX_PROD_LGS8G75 6
39
40struct lgs8gxx_config {
41
42	/* product type */
43	u8 prod;
44
45	/* the demodulator's i2c address */
46	u8 demod_address;
47
48	/* parallel or serial transport stream */
49	u8 serial_ts;
50
51	/* transport stream polarity*/
52	u8 ts_clk_pol;
53
54	/* transport stream clock gated by ts_valid */
55	u8 ts_clk_gated;
56
57	/* A/D Clock frequency */
58	u32 if_clk_freq; /* in kHz */
59
60	/* IF frequency */
61	u32 if_freq; /* in kHz */
62
63	/*Use External ADC*/
64	u8 ext_adc;
65
66	/*External ADC output two's complement*/
67	u8 adc_signed;
68
69	/*Sample IF data at falling edge of IF_CLK*/
70	u8 if_neg_edge;
71
72	/*IF use Negative center frequency*/
73	u8 if_neg_center;
74
75	/*8G75 internal ADC input range selection*/
76	/*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
77	u8 adc_vpp;
78
79	/* slave address and configuration of the tuner */
80	u8 tuner_address;
81};
82
83#if IS_REACHABLE(CONFIG_DVB_LGS8GXX)
84extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
85					   struct i2c_adapter *i2c);
86#else
87static inline
88struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
89				    struct i2c_adapter *i2c) {
90	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
91	return NULL;
92}
93#endif /* CONFIG_DVB_LGS8GXX */
94
95#endif /* __LGS8GXX_H__ */
96