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lgs8gxx.h
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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 <[email protected]>
7  * Copyright (C) 2008 Sirius International (Hong Kong) Limited
8  * Timothy Lee <[email protected]> (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/dvb/frontend.h>
30 #include <linux/i2c.h>
31 
32 #define LGS8GXX_PROD_LGS8913 0
33 #define LGS8GXX_PROD_LGS8GL5 1
34 #define LGS8GXX_PROD_LGS8G42 3
35 #define LGS8GXX_PROD_LGS8G52 4
36 #define LGS8GXX_PROD_LGS8G54 5
37 #define LGS8GXX_PROD_LGS8G75 6
38 
39 struct lgs8gxx_config {
40 
41  /* product type */
42  u8 prod;
43 
44  /* the demodulator's i2c address */
45  u8 demod_address;
46 
47  /* parallel or serial transport stream */
48  u8 serial_ts;
49 
50  /* transport stream polarity*/
51  u8 ts_clk_pol;
52 
53  /* transport stream clock gated by ts_valid */
54  u8 ts_clk_gated;
55 
56  /* A/D Clock frequency */
57  u32 if_clk_freq; /* in kHz */
58 
59  /* IF frequency */
60  u32 if_freq; /* in kHz */
61 
62  /*Use External ADC*/
63  u8 ext_adc;
64 
65  /*External ADC output two's complement*/
66  u8 adc_signed;
67 
68  /*Sample IF data at falling edge of IF_CLK*/
69  u8 if_neg_edge;
70 
71  /*IF use Negative center frequency*/
72  u8 if_neg_center;
73 
74  /*8G75 internal ADC input range selection*/
75  /*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
76  u8 adc_vpp;
77 
78  /* slave address and configuration of the tuner */
79  u8 tuner_address;
80 };
81 
82 #if defined(CONFIG_DVB_LGS8GXX) || \
83  (defined(CONFIG_DVB_LGS8GXX_MODULE) && defined(MODULE))
84 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
85  struct i2c_adapter *i2c);
86 #else
87 static inline
88 struct 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__ */
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